Get Display messages and warning/indicator lamps Guide for Mercedes A Class 4 Door Third Generation (2018-2026)

Display messages and warning/indicator lamps

337

the media display. Press the ¨ symbol to hide

the display message.

Display messages

Introduction

You can hide low-priority display messages by

pressing the back button P or the leꢂ-hand

Touch Control. The display messages will then be

stored in the message memory.

Notes about display messages

Display messages appear on the instrument dis-

play.

Display messages with graphic symbols are sim-

pliꢀed in the Operator's Manual and may diꢁer

from the symbols on the instrument display. The

instrument display shows high-priority display

messages in red. Certain display messages are

accompanied by a warning tone.

Rectify the cause of a display message as quickly

as possible.

High-priority display messages cannot be hidden.

The instrument display will show these display

messages permanently until the cause of the dis-

play message has been rectiꢀed.

Please act in accordance with the display mes-

sages and follow the additional notes in the Oper-

ator's Manual.

Calliing up saved display messages

On-board computer:

4

5

Service

1 Message

For some display messages, symbols will also be

shown:

If there are no display messages, No Messages

will appear on the instrument display.

R

Õ Further information

#

Scroll through the display messages by swip-

ing upwards or downwards on the leꢂ-hand

Touch Control.

R

¨ Hide display message

With the leꢂ-hand Touch Control, you can select

the respective symbol by swiping to the leꢂ or

right. Pressing Õ displays further information on

#

To exit the message memory: press the back

button P.

Display messages and warning/indicator lamps

338

Occupant safety

Display messages

Possible causes/consequences and M Solutions

* The restraint system is malfunctioning (/ page 38).

6

&

WARNING Risk of injury due to malfunctions in the restraint system

Components in the restraint system may be activated unintentionally or not deploy as planned in an accident.

#

SRS Malfunction Service

Required

Have the restraint system checked and repaired immediately at a qualiꢀed specialist workshop.

* The corresponding restraint system is malfunctioning (/ page 38).

6

&

WARNING Risk of injury due to malfunctions in the restraint system

Components in the restraint system may be activated unintentionally or not deploy as planned in an accident.

#

Front Left Malfunction

Service Required (example)

Have the restraint system checked and repaired immediately at a qualiꢀed specialist workshop.

* The corresponding restraint system is malfunctioning (/ page 38).

6

&

WARNING Risk of injury or fatal injury due to a malfunction in the window curtain airbag

The window curtain airbag might be triggered unintentionally or might not be triggered at all in the event of an

accident.

Left Side Curtain Airbag

Malfunction Service

Required (example)

#

Have the window curtain airbag checked and repaired immediately at a qualiꢀed specialist workshop.

Display messages and warning/indicator lamps

339

Display messages

Possible causes/consequences and M Solutions

Front Passenger Airbag Dis-

abled See Operator's Man-

ual

* The front passenger airbag and the front passenger knee airbag have been disabled even though an adult or a person

of adult build is on the front passenger seat. If additional forces are applied to the seat, the weight the system detects

may be too low.

&

WARNING Risk of injury or fatal injury due to a disabled front passenger airbag

If the front passenger airbag is disabled, the front passenger airbag will not be deployed in the event of an accident

and cannot perform its intended protective function.

A person in the front passenger seat could then, for example, come into contact with the vehicle's interior, espe-

cially if the person is sitting too close to the cockpit.

#

Make sure, both before and during the journey, that the status of the front passenger airbag is correct.

#

Stop the vehicle immediately in accordance with the traꢃc conditions.

Make sure that no objects are trapped under the front passenger seat.

Check the status of automatic front passenger airbag shutoꢁ (/ page 47).

If necessary, consult a qualiꢀed specialist workshop immediately.

#

Front Passenger Airbag

Enabled See Operator's

Manual

* The front passenger airbag and the front passenger knee airbag will be enabled while the vehicle is in motion in the

following situations:

R

Even when a child, a person of smaller stature or an object weighing less than the system weight threshold is loca-

ted on the front passenger seat

R

Even when the front passenger seat is not occupied

Display messages and warning/indicator lamps

340

Display messages

Possible causes/consequences and M Solutions

The system may detect objects or forces that are adding to the weight applied to the seat.

&

WARNING Risk of injury or death when using a child restraint system while the front passenger airbag is ena-

bled

If you secure a child in a child restraint system on the front passenger seat and the front passenger airbag is ena-

bled, the front passenger airbag can deploy in the event of an accident.

The child could be struck by the airbag.

#

Ensure, both before and during the journey, that the status of the front passenger airbag is correct.

NEVER use a rearward facing child restraint on a seat protected by an ACTIVE AIRBAG in front of it, DEATH or

SERIOUS INJURY to the CHILD can occur.

#

Stop the vehicle immediately in accordance with the traꢃc conditions.

Make sure that no objects are trapped under the front passenger seat.

Check the status of automatic front passenger airbag shutoꢁ (/ page 47).

If necessary, consult a qualiꢀed specialist workshop immediately.

#

The PRE‑SAFE^®functions are malfunctioning.

PRE-SAFE Inoperative See

Operator's Manual

*

#

Consult a qualiꢀed specialist workshop.

Display messages and warning/indicator lamps

341

SmartKey

Display messages

Possible causes/consequences and M Solutions

* Have the SmartKey replaced.

#

Consult a qualiꢀed specialist workshop.

Á

Obtain a New Key

* The SmartKey battery is discharged.

#

Replace the battery (/ page 68).

Á

Replace Key Battery

* The SmartKey is currently undetected.

#

Change the location of the SmartKey in the vehicle.

Á

#

If the SmartKey is still not recognized, place it in the marked space for starting with the SmartKey (/ page 129).

Key Not Detected (white

display message)

Display messages and warning/indicator lamps

342

Display messages

Possible causes/consequences and M Solutions

* The SmartKey cannot be detected and may no longer be in the vehicle.

The SmartKey is no longer in the vehicle and you switch oꢁ the vehicle:

Á

R

You can no longer start the vehicle.

Key Not Detected (red dis-

play message)

R

You cannot centrally lock the vehicle.

#

Ensure that the SmartKey is in the vehicle.

If the SmartKey detection function has a malfunction due to a strong radio signal source:

#

Stop the vehicle immediately in accordance with the traꢃc conditions.

#

Place the SmartKey in the marked space for starting the engine with the SmartKey (/ page 129).

* A warning tone will also sound. This message reminds you to take your SmartKey with you when you leave the vehicle.

Á

Don't Forget Your Key

* The vehicle is processing in order to teach in the new SmartKey.

#

Wait until processing is complete.

Á

Key Being Initialized Please

Wait

Display messages and warning/indicator lamps

343

Display messages

Possible causes/consequences and M Solutions

Place the Key in the

Marked Space See Opera-

tor's Manual

* SmartKey detection is malfunctioning.

#

Change the location of the SmartKey in the vehicle.

#

Place the SmartKey in the marked space for starting the engine with the SmartKey (/ page 129).

Lights

Display messages

Possible causes/consequences and M Solutions

* The corresponding light source is defective.

#

Drive on carefully.

:

#

Visit a qualiꢀed specialist workshop immediately.

Check Left Low

%

LED light sources: the display message for the corresponding light appears only when all the light-emitting diodes

in the light are faulty.

Beam (example)

* The exterior lighting is malfunctioning.

#

Consult a qualiꢀed specialist workshop.

:

Malfunction See Opera-

tor’s Manual

Display messages and warning/indicator lamps

344

Display messages

Possible causes/consequences and M Solutions

* The light sensor for automatic driving lights is malfunctioning.

#

Consult a qualiꢀed specialist workshop.

:

Automatic Headlamp Mode

Inoperative

* The active headlamps are malfunctioning.

#

Consult a qualiꢀed specialist workshop.

:

Active Headlamps Inopera-

tive

* You are driving without low-beam headlamps.

#

Turn the light switch to the L or Ã position.

:

Switch On Headlamps

* You are leaving the vehicle and the lights are still switched on.

#

Turn the light switch to the Ã position.

:

Switch Off Lights

Display messages and warning/indicator lamps

345

Display messages

Possible causes/consequences and M Solutions

* The Intelligent Light System is malfunctioning. The lighting system continues to function properly without the functions

of the Intelligent Light System.

:

#

Consult a qualiꢀed specialist workshop.

Intell. Light System Inoper-

ative

Adaptive Highbeam Assist

Currently Unavailable See

Operator's Manual

* Adaptive Highbeam Assist is temporarily unavailable.

The system limits have been reached (/ page 115).

Once the cause of the problem is no longer present, the system will be available again. The Adaptive Highbeam

Assist Now Available display message will appear.

#

Drive on.

#

Operate the high beam manually until Adaptive High Beam Assist is available again.

Adaptive Highbeam Assist

Inoperative

* Adaptive Highbeam Assist is malfunctioning.

#

Drive on.

or

#

Stop the vehicle in accordance with the traꢃc conditions and restart the vehicle.

If the display message does not disappear: consult a qualiꢀed specialist workshop.

#

Until then, operate the high beam manually.

Hazard Warning Flashers

Malfunctioning

* The hazard warning lamp switch is malfunctioning.

#

Consult a qualiꢀed specialist workshop.

Display messages and warning/indicator lamps

346

Vehicle

Display messages

Possible causes/consequences and M Solutions

* You are leaving the vehicle in a ready-to-drive state.

#

Get out of the vehicle, secure it against rolling away and take the SmartKey with you.

d

#

If you do not leave the vehicle, switch oꢁ the electrical consumers, e.g. the seat heating. Otherwise, the 12‑V bat-

tery may discharge and starting the engine may be possible only with the help of a second battery (jump start).

Vehicle Ready to Drive

Switch the Ignition Off

Before Exiting

Head-up Display Currently

Unavailable See Operator's

Manual

* The Head-up Display is temporarily unavailable. Possible causes:

R

Malfunctions in the power supply

R

Signal interference

#

Stop in accordance with the traꢃc conditions and switch the vehicle oꢁ and on again.

#

If the display message still appears, consult a qualiꢀed specialist workshop.

Head-up Display Inopera-

tive

* The Head-up Display has an internal error.

#

Consult a qualiꢀed specialist workshop.

Display messages and warning/indicator lamps

347

Display messages

Possible causes/consequences and M Solutions

* The power steering assistance is malfunctioning.

Ù

&

WARNING Risk of an accident due to altered steering characteristics

If the power assistance of the steering fails partially or completely, you will need to use more force to steer.

#

Steering Malfunction

Increased Physical Effort

See Operator's Manual

If safe steering is possible, drive on carefully.

#

Visit or consult a qualiꢀed specialist workshop immediately.

* The steering is malfunctioning. Steering capability is signiꢀcantly impaired.

Ù

&

WARNING Risk of accident if steering capability is impaired

If the steering does not function as intended, the vehicle's operating safety is jeopardized.

#

Steering Malfunction Stop

Immediately See Opera-

tor's Manual

Pull over and stop the vehicle safely as soon as possible, paying attention to road and traꢃc conditions. Do

not continue driving under any circumstances.

#

Consult a qualiꢀed specialist workshop.

* The electric steering lock is malfunctioning. The steering may be locked by the electric steering lock.

Ù

&

WARNING Risk of accident if steering capability is impaired

If the steering does not function as intended, the vehicle's operating safety is jeopardized.

Steering Malfunction See

Operator's Manual

Display messages and warning/indicator lamps

348

Display messages

Possible causes/consequences and M Solutions

#

Pull over and stop the vehicle safely as soon as possible, paying attention to road and traꢃc conditions. Do

not continue driving under any circumstances.

#

Consult a qualiꢀed specialist workshop.

#

Stop the vehicle immediately in accordance with the traꢃc conditions. Do not continue driving.

Consult a qualiꢀed specialist workshop.

* The electric steering lock could not unlock the steering.

#

Switch oꢁ the vehicle.

û

#

To unlock the steering, move the steering wheel slightly to the leꢂ and right.

Before Starting the Engine,

Turn Steering Wheel

#

Switch on the vehicle again.

* At least one door is open.

#

Close all doors.

C

M

* The hood is open.

&

WARNING Risk of accident due to driving with the hood unlocked

The hood may open and block your view.

Display messages and warning/indicator lamps

349

Display messages

Possible causes/consequences and M Solutions

#

Never release the hood when driving.

#

Before every trip, ensure that the hood is locked.

#

Stop the vehicle immediately in accordance with the traꢃc conditions.

Close the hood.

#

* The trunk lid is open.

N

&

DANGER Risk of exhaust gas poisoning

Combustion engines emit poisonous exhaust gases such as carbon monoxide. Exhaust gases can enter the vehicle

interior if the trunk lid is open when the vehicle is running, especially if the vehicle is in motion.

#

Always switch oꢁ the vehicle before opening the trunk lid.

#

Never drive with the trunk lid open.

#

Close the trunk lid.

* The washer ꢄuid level in the washer ꢄuid reservoir has dropped below the minimum.

#

Add washer ꢄuid (/ page 263).

¥

Check Washer Fluid

Wiper Malfunctioning

* The windshield wipers are malfunctioning.

Display messages and warning/indicator lamps

350

Display messages

Possible causes/consequences and M Solutions

#

Restart the vehicle.

If the display message still appears:

#

Consult a qualiꢀed specialist workshop.

Engine

Display messages

Possible causes/consequences and M Solutions

To switch engine off, press

and hold Start/Stop but-

ton for at least 3 seconds

or press 3 times.

* You have pressed the start/stop button while the vehicle is in motion.

#

Information about switching oꢁ the vehicle while driving (/ page 129).

Cannot Start Engine See

Operator's Manual

* The vehicle cannot be started.

#

Switch the vehicle oꢁ and switch it back on

#

If the display message still appears, consult a qualiꢀed specialist workshop.

Display messages and warning/indicator lamps

351

Display messages

Possible causes/consequences and M Solutions

* The coolant level is too low.

+

*

NOTE Engine damage due to insuꢃcient coolant

Avoid long journeys with insuꢃcient coolant.

#

Check Coolant Level See

Operator's Manual

#

Add coolant (/ page 262).

Have the engine cooling system checked at a qualiꢀed specialist workshop.

* The coolant is too hot.

#

Stop immediately in accordance with the traꢃc conditions and switch oꢁ the vehicle.

ÿ

Coolant Too Hot Stop Vehi-

cle Turn Engine Off

&

WARNING Risk of burns when opening the hood

If you open the hood in the event of an overheated engine or ꢀre in the engine compartment, the following situa-

tions may occur:

R

You may come into contact with hot gases.

R

You may come into contact with other escaping hot operating ꢄuids.

#

Before opening the hood, allow the engine to cool down.

#

In the event of a ꢀre in the engine compartment, keep the hood closed and call the ꢀre service.

#

Wait until the engine has cooled down.

Display messages and warning/indicator lamps

352

Display messages

Possible causes/consequences and M Solutions

#

Make sure that the air supply to the radiator is not obstructed.

Avoiding high loads on the engine, drive to the nearest qualiꢀed specialist workshop. In doing so, ensure that the

coolant temperature display remains below the red marking.

* There is a malfunction in the engine cooling system.

#

Avoiding high loads on the engine, drive to the nearest qualiꢀed specialist workshop. In doing so, ensure that the

coolant temperature display remains below the red marking.

ÿ

* The fuel supply has dropped into the reserve range.

#

Refuel.

æ

Fuel Level Low

* The fuel ꢀller cap is not closed correctly or the fuel system is leaking.

#

Close the fuel ꢀller cap.

æ

#

If the fuel ꢀller cap was already properly closed: consult a qualiꢀed specialist workshop.

Gas Cap Loose

Display messages and warning/indicator lamps

353

Transmission

Display messages

Possible causes/consequences and M Solutions

Only Shift to 'P' when Vehi-

cle is Stationary

* It is possible to select the park position j only if the vehicle is stationary.

#

Depress the brake pedal to stop.

#

Shiꢂ the transmission to park position j when the vehicle is stationary.

Apply Brake to Shift from

'P'

* You have attempted to shiꢂ the transmission out of park position j and into another transmission position.

#

Depress the brake pedal.

#

Select transmission position h, k or neutral i.

To Deselect P or N,

Depress Brake and Start

Engine

* You have attempted to shiꢂ the transmission out of park position j or neutral i and into another transmission posi-

tion.

#

Depress the brake pedal.

#

Start the vehicle.

#

Change the transmission position.

Apply Brake to Shift to D or

R

* You have attempted to select transmission position h or k.

#

Depress the brake pedal.

#

Select transmission position h or k.

Apply Brake to Shift to 'R'

* You have attempted to select transmission position k.

#

Depress the brake pedal.

Display messages and warning/indicator lamps

354

Display messages

Possible causes/consequences and M Solutions

#

Select transmission position k.

Driver's Door Open &

Transmission Not in P Risk

of Vehicle Rolling Away

* The driver's door is not fully closed and transmission position h, k or neutral i is selected.

The vehicle may roll away.

#

Select park position j when switching oꢁ the vehicle.

N Permanently Active Risk

of Rolling Away

* While the vehicle is rolling or while you are driving, neutral i has been engaged.

#

Depress the brake pedal to stop.

#

Shiꢂ the transmission to park position j when the vehicle is stationary.

#

To continue driving, select transmission position h or k.

Service Required Do Not

Shift Gears Visit Dealer

* The transmission is malfunctioning. It is no longer possible to change the transmission position.

#

If transmission position h is selected, consult a qualiꢀed specialist workshop and do not change the transmission

position.

#

For all other transmission positions, park the vehicle safely.

#

Consult a qualiꢀed specialist workshop or breakdown service.

Reversing Not Possible

Service Required

* The transmission is malfunctioning. It is not possible to select transmission position k.

#

Consult a qualiꢀed specialist workshop.

Transmission Malfunction

Stop

* The transmission is malfunctioning. The transmission shiꢂs to neutral i automatically.

#

Stop the vehicle immediately in accordance with the traꢃc conditions.

Display messages and warning/indicator lamps

355

Display messages

Possible causes/consequences and M Solutions

#

Depress the brake pedal.

#

Engage park position j.

#

Consult a qualiꢀed specialist workshop.

Transmission Malfunction

* The transmission is malfunctioning. The cause could be an overheated clutch or blocked gears.

#

Let the transmission cool down.

#

If the display message still appears following a restart, consult a qualiꢀed specialist workshop.

* The transmission is overheating. When the display message is active, start-up and driving characteristics may be tem-

porarily impaired.

d

#

Drive at low engine speed.

#

Transmission Oil Overhea-

ted Drive with Caution

Avoid sporty driving.

#

Before pulling away on uphill gradients, let the transmission cool down until the display message disappears.

Parking Lock Inoperative

Apply Parking Brake

* The transmission is malfunctioning. The park position j cannot be selected.

#

Park the vehicle safely.

#

Use the electric parking brake to secure the vehicle against rolling away.

Teaching in Transmission

Operate Selector Lever

Apply Brake for XX s Risk

of Vehicle Rolling Away

* The transmission is being taught in. There is a risk of the vehicle rolling away.

#

Depress and hold the brake pedal until the teach-in process has been completed.

The electric parking brake is applied automatically during the teach-in process.

#

Switch on the vehicle.

Display messages and warning/indicator lamps

356

Display messages

Possible causes/consequences and M Solutions

#

Select park position j, transmission position k or neutral i.

Apply Parking Brake Risk

of Rolling Away See Opera-

tor's Manual

* The transmission position cannot be reliably identiꢀed.

#

Use the electric parking brake to secure the vehicle against rolling away.

Teaching in Transmission

Complete

* The transmission's teach-in process is complete. All transmission positions can be selected again.

Transmission Malfunction

Service Required

* The transmission is malfunctioning.

Consult a qualiꢀed specialist workshop.

Auxiliary Battery Malfunc-

tion (white display message)

* The auxiliary battery for the automatic transmission is no longer being charged.

#

Visit a qualiꢀed specialist workshop.

#

Until then, always select park position j manually before you switch oꢁ the vehicle.

#

Before leaving the vehicle, apply the electric parking brake.

Auxiliary Battery Malfunc-

tion (red display message)

* Vehicles with automatic transmission: The auxiliary battery for the transmission is no longer being charged.

#

Consult a qualiꢀed specialist workshop.

#

Vehicles with automatic transmission: Until then, always select park position j before you switch oꢁ the vehicle.

#

Before leaving the vehicle, apply the electric parking brake.

Display messages and warning/indicator lamps

357

Brakes

Display messages

Possible caausess//ccoonnsseeqquences annd M Solutions

* The yellow ! indicator lamp is lit. The electric parking brake is malfunctioning.

To apply:

#

F

Switch the vehicle oꢁ and switch it back on

(USA only)

#

Apply the electric parking brake manually (/ page 153).

If it is not possible to apply the electric parking brake:

#

!

Parking Brake See Opera-

Consult a qualiꢀed specialist workshop.

(Canada only)

#

Where necessary, also secure the parked vehicle against rolling away.

* The yellow ! indicator lamp and the red F (USA only) or ! (Canada only) indicator lamp are lit. The electric

parking brake is malfunctioning.

tor's Manual

To release:

#

Switch the vehicle oꢁ and switch it back on

#

Release the electric parking brake manually (/ page 153).

or

#

Release the electric parking brake automatically (/ page 152).

If it is still not possible to release the electric parking brake:

#

Do not continue driving. Consult a qualiꢀed specialist workshop.

Display messages and warning/indicator lamps

358

Display messages

Possible causes/consequences and M Solutions

* The yellow ! indicator lamp is lit and the red F (USA only) or ! (Canada only) indicator lamp is ꢄashing.

The electric parking brake is malfunctioning.

The electric parking brake could not be applied or released.

#

Switch the vehicle oꢁ and switch it back on

To apply:

#

Release and then apply the electric parking brake manually (/ page 153).

To release:

#

Apply and then release the electric parking brake manually.

If the electric parking brake cannot be applied or the red F (USA only) or ! (Canada only) indicator lamp con-

tinues to ꢄash:

#

Do not continue driving. Consult a qualiꢀed specialist workshop.

#

Where necessary, also secure the parked vehicle against rolling away.

* The yellow ! indicator lamp is lit and the red F (USA only) or ! (Canada only) indicator lamp ꢄashes for

approximately ten seconds aꢂer the electric parking brake has been applied or released. It then remains lit or goes

out. The electric parking brake is malfunctioning.

If the state of charge is too low:

#

Charge the 12 V battery.

Display messages and warning/indicator lamps

359

Display messages

Possible causes/consequences and M Solutions

To apply:

#

Switch oꢁ the vehicle.

The electric parking brake will be applied automatically.

If you do not want the electric parking brake to be applied, e.g. at an automatic car wash or when the vehicle is being

towed, leave the vehicle switched on. This does not include having the vehicle towed with the rear axle raised.

If the electric parking brake is not applied automatically:

#

Switch the vehicle oꢁ and switch it back on

#

Release and then apply the electric parking brake manually (/ page 153).

If it is still not possible to apply the electric parking brake:

#

Consult a qualiꢀed specialist workshop.

#

Where necessary, also secure the parked vehicle against rolling away.

To release:

#

If the conditions for automatic release are fulꢀlled and the electric parking brake is not released automatically,

release the electric parking brake manually (/ page 153).

If it is still not possible to release the electric parking brake:

#

Do not continue driving. Consult a qualiꢀed specialist workshop.

Display messages and warning/indicator lamps

360

Display messages

Possible causes/consequences and M Solutions

* The red F indicator lamp (USA only) or ! indicator lamp (Canada only) is ꢄashing.

The electric parking brake is applied while you are driving:

F

R

A condition for automatic release of the electric parking brake has not been fulꢀlled (/ page 152).

(USA only)

R

You are performing emergency braking using the electric parking brake (/ page 153).

#

Check the conditions for automatic release of the electric parking brake.

!

Please Release Parking

#

Release the electric parking brake manually.

(Canada only)

Brake

Display messages and warning/indicator lamps

361

Display messages

Possible causes/consequences and M Solutions

* The red F (USA only) or ! (Canada only) indicator lamp is lit.

You have attempted to release the electric parking brake with the vehicle switched oꢁ.

#

F

Switch on the vehicle.

(USA only)

!

Turn On the Ignition to

(Canada only)

Release the Parking Brake

* There is insuꢃcient brake ꢄuid in the brake ꢄuid reservoir.

$

&

WARNING Risk of an accident due to low brake ꢄuid level

If the brake ꢄuid level is too low, the braking eꢁect and the braking characteristics may be impaired.

#

(USA only)

Pull over and stop the vehicle safely as soon as possible, paying attention to road and traꢃc conditions. Do

not continue driving under any circumstances.

J

Check Brake Fluid Level

#

Consult a qualiꢀed specialist workshop.

#

(Canada only)

Do not add brake ꢄuid.

Display messages and warning/indicator lamps

362

Display messages

Possible causes/consequences and M Solutions

Check Brake Pads See

Operator's Manual

* The brakepads have reached the wear limit.

#

Consult a qualiꢀed specialist workshop.

Driving systems

Display messages

Possible causes/consequences and M Solutions

* The HOLD function is deactivated because the vehicle is slipping or a condition for activation is not fulꢀlled.

#

Reactivate the HOLD function later or check the activation conditions for the HOLD function (/ page 159).

ë

Off

* ATTENTION ASSIST is malfunctioning.

#

Visit a qualiꢀed specialist workshop.

é

ATTENTION ASSIST Inoper-

ative

Display messages and warning/indicator lamps

363

Display messages

Possible causes/consequences and M Solutions

* ATTENTION ASSIST has detected fatigue or an increasing lack of concentration on the part of the driver

(/ page 161).

é

#

If necessary, take a break.

ATTENTION ASSIST: Take a

Break!

* Cruise control cannot be activated as not all activation conditions are fulꢀlled.

#

Observe the activation conditions for cruise control (/ page 164).

h

- - - mph

Cruise Control Inoperative

* Cruise control is malfunctioning.

#

Visit a qualiꢀed specialist workshop.

Cruise Control Off

* Cruise control has been deactivated.

If there is an additional warning tone, cruise control has been deactivated automatically (/ page 163).

* Active Distance Assist DISTRONIC cannot be activated as not all activation conditions are fulꢀlled.

#

Comply with the activation conditions of Active Distance Assist DISTRONIC (/ page 167).

ç

- - - mph

Display messages and warning/indicator lamps

364

Display messages

Possible causes/consequences and M Solutions

* If you depress the accelerator pedal beyond the setting of Active Distance Assist DISTRONIC, the system will switch to

passive mode (/ page 165).

ç

Suspended

* Active Distance Assist DISTRONIC was deactivated. If a warning tone also sounds, Active Distance Assist DISTRONIC

has deactivated automatically (/ page 167).

ç

Off

Active Distance Assist Cur-

rently Unavailable See

Operator's Manual

* Active Distance Assist DISTRONIC is temporarily unavailable.

The ambient conditions are outside the system limits (/ page 165).

As soon as the ambient conditions are within the system limits, the system will become available again.

#

Drive on.

or

#

If the display message does not disappear, stop the vehicle in accordance with the traꢃc conditions and restart

the vehicle.

Active Distance Assist Inop-

erative

* Active Distance Assist DISTRONIC is malfunctioning.

Other driving systems and driving safety systems may also be malfunctioning.

#

Drive on.

Display messages and warning/indicator lamps

365

Display messages

Possible causes/consequences and M Solutions

or

#

Stop the vehicle in accordance with the traꢃc conditions and restart the vehicle.

If the display message does not disappear: consult a qualiꢀed specialist workshop.

#

Active Distance Assist Now

Available

* Active Distance Assist DISTRONIC is operational again.

#

Switch on Active Distance Assist DISTRONIC (/ page 167).

Active Steering Assist Cur-

rently Unavailable See

Operator's Manual

* Active Steering Assist is temporarily unavailable.

The ambient conditions are outside the system limits (/ page 171).

As soon as the ambient conditions are within the system limits, the system will become available again.

#

Drive on

#

Check the tire pressure if necessary.

Active Steering Assist Inop-

erative

* Active Steering Assist is malfunctioning. Active Distance Assist DISTRONIC remains available.

#

Drive on

or

#

Stop the vehicle in accordance with the traꢃc conditions and restart the vehicle.

If the display message does not disappear: consult a qualiꢀed specialist workshop.

#

Active Steering Asst. Cur-

rently Unavailable Due to

Multiple Emergency Stops

* Active Steering Assist is temporarily unavailable due to multiple emergency stops.

#

Take over the steering and stop in accordance with the traꢃc conditions.

Display messages and warning/indicator lamps

366

Display messages

Possible causes/consequences and M Solutions

#

Switch the vehicle oꢁ and switch it back on

Active Steering Assist is available once more.

Beginning Emergency Stop

* Your hands are not on the steering wheel. An emergency stop is being initiated (/ page 173).

#

Put your hands back on the steering wheel.

You can cancel the deceleration at any time by performing one of the following actions:

R

Steering

R

Braking or accelerating

R

Deactivating Active Distance Assist DISTRONIC

* Active Steering Assist has reached the system limits (/ page 171).

You have not steered independently for a considerable period of time.

#

Ø

Take over the steering and drive on in accordance with the traꢃc conditions.

Traffic Sign Assist Cur-

rently Unavailable See

Operator's Manual

* Traꢃc Sign Assist is temporarily unavailable.

Once the cause of the problem is no longer present, the system will be available again.

#

Drive on

Traffic Sign Assist Inopera-

tive

* Traꢃc Sign Assist is malfunctioning.

#

Drive on

or

#

Stop the vehicle in accordance with the traꢃc conditions and restart the vehicle.

Display messages and warning/indicator lamps

367

Display messages

Possible causes/consequences and M Solutions

#

If the display message does not disappear: consult a qualiꢀed specialist workshop.

Blind Spot Assist Currently

Unavailable See Operator's

Manual

* Blind Spot Assist is temporarily unavailable.

The system limits have been reached (/ page 184).

Once the cause of the problem is no longer present, the system will be available again.

#

Drive on

or

#

If the display message does not disappear, stop the vehicle in accordance with the traꢃc conditions and restart

the vehicle.

Blind Spot Assist Inopera-

tive

* Blind Spot Assist is malfunctioning.

#

Drive on

or

#

Stop the vehicle in accordance with the traꢃc conditions and restart the vehicle.

If the display message does not disappear: consult a qualiꢀed specialist workshop.

#

Active Blind Spot Assist

Currently Unavailable See

Operator's Manual

* Active Blind Spot Assist is temporarily unavailable.

The system limits have been reached (/ page 184).

Once the cause of the problem is no longer present, the system will be available again.

#

Drive on

or

Display messages and warning/indicator lamps

368

Display messages

Possible causes/consequences and M Solutions

#

If the display message does not disappear, stop the vehicle in accordance with the traꢃc conditions and restart

the vehicle.

Active Blind Spot Assist

Inoperative

* Active Blind Spot Assist is malfunctioning.

#

Drive on

or

#

Stop the vehicle in accordance with the traꢃc conditions and restart the vehicle.

If the display message does not disappear: consult a qualiꢀed specialist workshop.

#

Active Lane Keeping Assist

Currently Unavailable See

Operator's Manual

* Active Lane Keeping Assist is temporarily unavailable.

The ambient conditions are outside the system limits (/ page 187).

As soon as the ambient conditions are within the system limits, the system will become available again.

#

Drive on

Active Lane Keeping Assist

Inoperative

* Active Lane Keeping Assist is malfunctioning.

#

Drive on

or

#

Stop the vehicle in accordance with the traꢃc conditions and restart the vehicle.

If the display message does not disappear: consult a qualiꢀed specialist workshop.

#

Display messages and warning/indicator lamps

369

Display messages

¸

Ã

ç

Ä

Possible causes/consequences and M Solutions

* Front and corner radar sensors (hereaꢂer "sensors") are malfunctioning. Possible causes:

R

The sensors are dirty

R

Heavy rain or snow

R

Extended country driving without other traꢃc, e.g. in the desert

Driving systems and driving safety systems may be malfunctioning or temporarily unavailable. The brake system, steer-

ing and drive system will continue to function normally.

#

Drive on.

Once the causes of the problem are no longer present, the driving systems and driving safety systems will be available

again and the corresponding symbols will be switched oꢁ.

If the display message does not disappear:

#

Temporarily Unavailable

Sensors are Dirty

Stop the vehicle in accordance with the traꢃc conditions.

#

Clean all sensor covers from outside (/ page 155).

#

Restart the vehicle.

Display messages and warning/indicator lamps

370

Display messages

Possible causes/consequences and M Solutions

* The view of the multifunction camera is restricted. Possible causes:

R

Dirt on the windshield in the ꢀeld of vision of the multifunction camera

á

Ã

Ä

Ø

Ô

R

Heavy rain, snow or fog

R

Condensation on the inside of the windshield: in certain weather conditions, condensation can form on the inside

of the windshield during cold times of year in particular.

%

This condensation on the windshield will be removed automatically within a short time with the aid of a heater. The

restriction is temporary.

Driving systems and driving safety systems may be malfunctioning or temporarily unavailable. The brake system, steer-

ing and drive system will continue to function normally.

#

Drive on.

Once the causes of the problem are no longer present, the driving systems and driving safety systems will be available

again and the corresponding symbols will be switched oꢁ.

If the display message does not disappear:

#

Temporarily Unavailable

Camera View Restricted

Stop the vehicle in accordance with the traꢃc conditions.

#

Clean the windshield, especially in the position of the multifunction camera (/ page 155).

#

Restart the vehicle.

Display messages and warning/indicator lamps

371

Display messages

Possible causes/consequences and M Solutions

* The adjustable damping is malfunctioning. The vehicle's handling characteristics may be aꢁected.

#

Do not drive at speeds greater than 50 mph (80 km/h).

ä

#

Visit a qualiꢀed specialist workshop.

Malfunction Drive at Max.

50 mph

Parking Assist and

PARKTRONIC Inoperative

See Operator's Manual

* Vehicles with Active Parking Assist: Active Parking Assist and Parking Assist PARKTRONIC are malfunctioning.

Vehiclees without Active Parking Assisst: Parking Assist PARKTRONIC is malfunctioning.

#

Stop the vehicle in accordance with the traꢃc conditions and restart the vehicle.

#

If the display message still appears, consult a qualiꢀed specialist workshop.

Display messages and warning/indicator lamps

372

Driving safety systems

Display messages

Possible causes/consequences and M Solutions

ABS and ESP^®are temporarily unavailable.

*

Other driving systems and driving safety systems (e.g. BAS) may also be temporarily unavailable.

!

÷

The brake system will continue to operate normally. Braking distance may increase in an emergency braking situation.

WARNING Risk of skidding if ABS and ESP^®are malfunctioning

&

The wheels may lock during braking and ESP^®does not perform any vehicle stabilization.

Currently Unavailable See

Operator's Manual

The steerability and braking characteristics are heavily impaired and the braking distance may increase. In addi-

tion, other driving safety systems are switched oꢁ.

#

Drive carefully on a suitable stretch of road, making slight steering movements at a speed above 19 mph

(30 km/h).

#

If the display message does not disappear, consult a qualiꢀed specialist workshop immediately. Drive care-

fully.

Display messages and warning/indicator lamps

373

Display messages

!

÷

Possible causes/consequences and M Solutions

ABS and ESP^®are malfunctioning.

*

Other driving systems and driving safety systems (e.g. BAS) may also be malfunctioning.

The brake system will continue to operate normally. Braking distance may increase in an emergency braking situation.

WARNING Risk of skidding if ABS and ESP^®are malfunctioning

&

The wheels may block during braking and ESP^®does not perform any vehicle stabilization.

Inoperative See Operator's

Manual

The steerability and braking characteristics are heavily impaired and the braking distance may increase. In addi-

tion, other driving safety systems are switched oꢁ.

#

Drive on carefully.

Have ABS and ESP^®checked immediately at a qualiꢀed specialist workshop.

#

ESP^®is temporarily unavailable.

*

Other driving systems and driving safety systems (e.g. BAS) may also be malfunctioning.

÷

WARNING Risk of skidding if ESP is malfunctioning^®

&

Currently Unavailable See

Operator's Manual

If ESP^®is malfunctioning, ESP^®cannot carry out vehicle stabilization. In addition, other driving safety systems are

switched oꢁ.

#

Drive carefully on a suitable stretch of road, making slight steering movements at a speed above 19 mph

(30 km/h).

Display messages and warning/indicator lamps

374

Display messages

Possible causes/consequences and M Solutions

#

If the display message does not disappear, consult a qualiꢀed specialist workshop immediately. Drive care-

fully.

ESP^®is malfunctioning.

*

Other driving systems and driving safety systems (e.g. BAS) may also be malfunctioning.

The brake system will continue to operate normally. Braking distance may increase in an emergency braking situation.

÷

Inoperative See Operator's

Manual

WARNING Risk of skidding if ESP^®is malfunctioning

&

If ESP^®is malfunctioning, ESP^®cannot carry out vehicle stabilization. In addition, other driving safety systems are

switched oꢁ.

#

Drive on carefully.

Have ESP^®checked at a qualiꢀed specialist workshop.

#

Display messages and warning/indicator lamps

375

Display messages

T

!

÷

Possible causes/consequences and M Solutions

EBD, ABS and ESP^®are malfunctioning.

*

Other driving systems and driving safety systems (e.g. BAS) may also be malfunctioning.

WARNING Risk of skidding if EBD, ABS and ESP^®are malfunctioning

&

The wheels may block during braking and ESP^®does not perform any vehicle stabilization.

The steerability and braking characteristics are heavily impaired and the braking distance may increase. In addi-

tion, other driving safety systems are switched oꢁ.

#

Drive on carefully.

#

Have the brake system checked immediately at a qualiꢀed specialist workshop.

Inoperative See Operator's

Manual

Active Brake Assist Func-

tions Currently Limited See

Operator's Manual

* Vehicles with the Driving Assistance Package: Active Brake Assist with cross-traꢃc function, Evasive Steering Assist or

PRE‑SAFE^®PLUS are temporarily unavailable or only partially available.

Vehicles without the Driving Assistance Package: Active Brake Assist is temporarily unavailable.

#

Drive on.

As soon as the ambient conditions are within the system limits, the system will become available again.

or

#

If the display message does not disappear, stop the vehicle in accordance with the traꢃc conditions and restart

the vehicle.

Display messages and warning/indicator lamps

376

Display messages

Possible causes/consequences and M Solutions

Active Brake Assist Func-

tions Limited See Opera-

tor's Manual

* For vehicles with the Driving Assistance Package, the following functions may be temporarily unavailable or only parti-

ally available:

R

Active Brake Assist with cross-traꢃc function

R

Evasive Steering Assist

PRE‑SAFE^®PLUS

R

Vehicles without the Driving Assistance Packkage: Active Brake Assist is temporarily unavailable or only partially availa-

ble.

#

Drive on

or

#

Stop the vehicle in accordance with the traꢃc conditions and restart the vehicle.

If the display message does not disappear: consult a qualiꢀed specialist workshop.

#

Mercedes-Benz emergency call system

Display messages

Possible causes/consequences and M Solutions

* The Mercedes-Benz emergency call system is malfunctioning. The Mercedes me connect system is also malfunction-

ing.

G

#

Consult a qualiꢀed specialist workshop.

Inoperative

Display messages and warning/indicator lamps

377

Display messages

Possible causes/consequences and M Solutions

Device Detected at Diag-

nostics Connection See

Operator's Manual

* The vehicle functions for malfunction detection are restricted.

At least one of the main functions of the Mercedes me connect system is malfunctioning.

#

Observe the notes on the diagnostics connection (/ page 27).

#

Consult a qualiꢀed specialist workshop.

Battery

Display messages

Possible causes/consequences and M Solutions

* The vehicle is oꢁ and the condition of charge of the 12 V battery is too low.

#

Switch oꢁ electrical consumers that are not required.

Drive for 30–60 minutes.

#

12 V Battery See Opera-

tor's Manual

or

#

Charge the 12 V battery when stationary (/ page 282).

* If the message appears while the vehicle is switched on, this indicates an on-board electrical system malfunction.

#

Visit a qualiꢀed specialist workshop.

* The 12 V battery is not being charged.

#

See Operator's Manual

Display messages and warning/indicator lamps

378

Display messages

Possible causes/consequences and M Solutions

*

NOTE Possible engine damage if you continue driving

#

Do not continue driving under any circumstances.

Consult a qualiꢀed specialist workshop.

#

Stop immediately in accordance with the traꢃc conditions and switch oꢁ the vehicle.

Consult a qualiꢀed specialist workshop.

* The 12 V battery is no longer being charged and the condition of charge is too low.

#

*

NOTE Possible engine damage if you continue driving

#

Stop Vehicle See Opera-

tor's Manual

Do not continue driving under any circumstances.

Consult a qualiꢀed specialist workshop.

#

Stop the vehicle immediately in accordance with the traꢃc conditions. Do not continue driving.

Switch oꢁ the vehicle.

Consult a qualiꢀed specialist workshop.

Display messages and warning/indicator lamps

379

Display messages

Possible causes/consequences and M Solutions

* The 12 V battery charge level is too low.

#

Stop the vehicle immediately in accordance with the traꢃc conditions. Do not continue driving.

Leave the vehicle running

#

Stop Vehicle Leave Engine

Running

If the display message disappears: drive on.

If the display message does not disappear: consult a qualiꢀed specialist workshop.

Tire pressure monitor

Display messages

Possible causes/consequences and M Solutions

Tire Press. Monitor Cur-

rently Unavailable

* There is interference from a powerful radio signal source As a result, no signals from the tire pressure sensors are

being received. The tire pressure monitoring system is temporarily unavailable.

The tire pressure monitoring system will restart automatically as soon as the cause has been rectiꢀed.

#

Drive on.

Tire Press. Monitor Inopera-

tive

* The tire pressure monitoring system is malfunctioning.

&

WARNING There is a risk of an accident if the tire pressure monitoring system is malfunctioning

The tire pressure monitoring system cannot issue a warning if there is pressure loss in one or more of the tires.

Tires with insuꢃcient tire pressure may impair the driving characteristics as well as steering and braking.

#

Have the tire pressure monitoring system checked at a qualiꢀed specialist workshop.

Display messages and warning/indicator lamps

380

Display messages

Possible causes/consequences and M Solutions

Tire Pressure Monitor Inop-

erative No Wheel Sensors

* The wheels installed do not have suitable tire pressure sensors. The tire pressure monitoring system is deactivated.

#

Install wheels with suitable tire pressure sensors.

* There is no signal from the tire pressure sensor of one or more wheels. No pressure value is displayed for the aꢁected

tire.

h

#

Have the faulty tire pressure sensor replaced at a qualiꢀed specialist workshop.

Wheel Sensor(s) Missing

* The tire pressure in one or more tires has dropped signiꢀcantly.

The wheel position is displayed. A warning tone will also sound.

h

&

WARNING Risk of an accident due to insuꢃcient tire pressure

Check Tires

R

The tires can burst.

The tires can wear excessively and/or unevenly.

The driving characteristics as well as the steering and braking may be greatly impaired.

You could then lose control of the vehicle.

#

Observe the recommended tire pressures.

#

Adjust the tire pressure if necessary.

#

Stop the vehicle in accordance with the traꢃc conditions.

#

Check the tire pressure (/ page 293) and the tires.

Display messages and warning/indicator lamps

381

Display messages

Possible causes/consequences and M Solutions

* The tire pressure is too low in at least one of the tires, or the diꢁerence in tire pressure between the individual wheels

is too great.

h

#

Check the tire pressure and add air, if necessary.

#

Please Correct Tire Pres-

sure

When the tire pressure is correct, restart the tire pressure monitor (/ page 298).

* The tire pressure in one or more tires has dropped suddenly. The wheel position will be displayed.

h

&

WARNING Risk of an accident from driving with a ꢄat tire

R

The tires can overheat and be damaged.

Warning Tire Malfunction

R

The driving characteristics as well as the steering and braking characteristics may be greatly impaired.

You could then lose control of the vehicle.

#

Do not drive with a ꢄat tire.

#

Do not exceed the maximum permissible driving distance in emergency mode and the maximum permissible

speed with a ꢄat MOExtended tire.

#

Observe the notes on ꢄat tires.

Notes in the event of a ꢄat tire (/ page 273).

#

Stop the vehicle in accordance with the traꢃc conditions.

#

Check the tires.

Display messages and warning/indicator lamps

382

Display messages

Possible causes/consequences and M Solutions

Tires Overheated

* At least one tire is overheating. The aꢁected tires are displayed in red. At temperatures close to the limit value, the

tires are displayed in yellow.

&

WARNING Risk of an accident from driving with overheated tires

Overheated tires can burst.

#

Reduce speed so that the tires cool down.

Decrease Speed

* At least one tire is overheating. The aꢁected tires are displayed in red. At temperatures close to the limit value, the

tires are displayed in yellow.

&

WARNING Risk of an accident from driving with overheated tires

Overheated tires can burst.

#

Reduce speed so that the tires cool down.

Tire preessure loss warning system

Display messages

Possible causes/consequences and M Solutions

Check Tire Pressure Soon

* Canada only:

The tire pressure loss warning system has detected a signiꢀcant loss of pressure.

Display messages and warning/indicator lamps

383

Display messages

Possible causes/consequences and M Solutions

&

WARNING Risk of an accident due to insuꢃcient tire pressure

R

The tires can burst.

The tires can wear excessively and/or unevenly.

The driving characteristics as well as the steering and braking may be greatly impaired.

You could then lose control of the vehicle.

#

Observe the recommended tire pressures.

#

Adjust the tire pressure if necessary.

#

Stop the vehicle in accordance with the traꢃc conditions.

#

Check the tire pressure (/ page 293) and the tires.

When the tire pressure is correct, restart the tire pressure loss warning system (/ page 298).

Check Tire Pressure Then

Restart Run Flat Indicator

* Canada only:

The tire pressure loss warning system generated a display message and has not been restarted since.

#

When the tire pressure is correct, restart the tire pressure loss warning system (/ page 298).

Run Flat Indicator Inopera-

tive

* Canada only:

The tire pressure loss warning system is malfunctioning.

#

Consult a qualiꢀed specialist workshop.

Display messages and warning/indicator lamps

384

Engine oil

Display messages

Possible causes/consequences and M Solutions

* The engine oil level has dropped to the minimum level.

5

*

NOTE Engine damage caused by driving with insuꢃcient engine oil

Avoid long journeys with insuꢃcient engine oil.

#

Check Engine Oil Level

(Add 1 quart)

#

When next refueling, add 1.1 US qt (1 l) of engine oil (/ page 261).

Notes on engine oil (/ page 331).

* The engine oil level is too high.

5

*

NOTE Engine damage caused by driving with excess engine oil

Avoid long journeys with excess engine oil.

#

Engine Oil Reduce Oil Level

#

Consult a qualiꢀed specialist workshop immediately and have the engine oil level reduced.

* The engine oil level is too low.

5

*

NOTE Engine damage caused by driving with insuꢃcient engine oil

Avoid long journeys with insuꢃcient engine oil.

#

Engine Oil Level Low Stop

Vehicle Turn Engine Off

#

Stop the vehicle immediately in accordance with the traꢃc conditions. Do not continue driving.

Display messages and warning/indicator lamps

385

Display messages

Possible causes/consequences and M Solutions

#

Switch oꢁ the vehicle.

#

Add 1.1 US qt (1 l) of engine oil (/ page 261).

#

Check the engine oil level.

Notes on engine oil (/ page 331).

* The oil pressure is too low.

5

*

NOTE Engine damage caused by driving with insuꢃcient oil pressure

Avoid driving with insuꢃcient oil pressure.

#

Engine Oil Pressure Stop

Switch Off Engine

#

Stop the vehicle immediately in accordance with the traꢃc conditions. Do not continue driving.

Switch oꢁ the vehicle.

Consult a qualiꢀed specialist workshop.

* The electrical connection to the oil level sensor has been interrupted or the oil level sensor is faulty.

#

Consult a qualiꢀed specialist workshop.

5

Engine Oil Level Cannot Be

Measured

Display messages and warning/indicator lamps

386

æ

F

!

é

J

Widescreen cockpit instrument display

Reserve fuel with fuel ꢀller ꢄap loca-

tion indicator (/ page 389)

Warning and indicator lamps

Overvieww of indicatoor and warnning lamps

USA: electric parking brake (red)

(/ page 393)

Some systems will perform a self-test when the

vehicle is switched on. Some indicator and warn-

ing lamps may brieꢄy light up or ꢄash. This behav-

ior is non-critical. These indicator and warning

lamps indicate a malfunction only if they light up

or ꢄash aꢂer the vehicle has been started or dur-

ing a journey.

Canada: electric parking brake (red)

(/ page 393)

Electric parking brake (yellow)

(/ page 393)

USA: Recuperative Brake System

(/ page 393)

Standard instrument display

Canada: brakes (yellow)

(/ page 393)

Depending on the display setting, the positions of

the indicator lamps on the instrument display may

diꢁer from the example shown.

$

J

L

Ó

ê

!

÷

å

USA: brakes (red) (/ page 393)

Canada: brakes (red) (/ page 393)

Distance warning (/ page 396)

Active Brake Assist (/ page 396)

ABS (/ page 397)

Indicator and warning lamps:

6

ü

Ù

ÿ

Restraint system (/ page 387)

Seat belt (/ page 387)

Power steering (/ page 388)

Vehicles with a widescreen cockpit:

coolant temperature (/ page 389)

ESP^®(/ page 397)

ESP^®OFF (/ page 397)

;

#

Engine diagnostics (/ page 389)

Electrical malfunction (/ page 389)

Display messages and warning/indicator lamps

387

h

Tire pressure monitoring system

(/ page 399)

T

Parking lights (/ page 112)

Low beam (/ page 112)

L

K

High beam (/ page 113)

Turn signal lights (/ page 113)

Rear fog light (/ page 112)

#!

R

Occupantt safety

Warning/indicator lamp

Possible causes/consequences and M Solutions

* The restraint system red warning lamp is lit while the vehicle is on.

The restraint system is malfunctioning (/ page 38).

6

&

WARNING Risk of injury due to malfunctions in the restraint system

Restraint system warning

lamp

Components in the restraint system may be activated unintentionally or not deploy as planned in an accident.

#

Have the restraint system checked and repaired immediately at a qualiꢀed specialist workshop.

#

Drive on carefully.

#

Note the messages on the instrument display.

Consult a qualiꢀed specialist workshop immediately.

Display messages and warning/indicator lamps

388

Warning/indicator lamp

Possible causes/consequences and M Solutions

* The red seat belt warning lamp ꢄashes and an intermittent warning tone sounds.

The driver or front passenger has not fastened his/her seat belt while the vehicle is in motion.

ü

#

Fasten your seat belt (/ page 41).

There are objects on the front passenger seat.

Seat belt warning lamp

ꢄashes

#

Remove the objects from the front passenger seat.

*The red seat belt warning lamp lights up for six seconds once the vehicle has started.

In addition, an intermittent warning tone may sound.

The red seat belt warning lamp reminds the driver and front passenger to fasten their seat belts.

ü

#

Seat belt warning lamp

lights up

Fasten your seat belt (/ page 41).

If you have placed objects on the front passenger seat, the red seat belt warning lamp may remain lit.

Vehicle

Warning/indicator lamp

Possible causes/consequences and M Solutions

* The red power steering warning lamp is lit while the vehicle is running.

The power assistance or the steering itself is malfunctioning.

Ù

&

WARNING Risk of accident if steering capability is impaired

Power steering warning

lamp (red)

If the steering does not function as intended, the vehicle's operating safety is jeopardized.

Display messages and warning/indicator lamps

389

Warning/indicator lamp

Possible causes/consequences and M Solutions

#

Pull over and stop the vehicle safely as soon as possible, paying attention to road and traꢃc conditions. Do not

continue driving under any circumstances.

#

Consult a qualiꢀed specialist workshop.

#

Note the messages on the instrument display.

Engine

Warning/indicator lamp

Possible causes/consequences and M Solutions

* The red coolant warning lamp is lit while the engine is running.

Possible causes:

ÿ

R

The temperature sensor is malfunctioning

Coolant warning lamp (red)

R

The coolant level is too low

R

The air supply to the radiator is obstructed

R

The radiator fan is faulty

R

The engine coolant pump is faulty

If there is an additional warning tone, the coolant temperature has exceeded the maximum permissible temperature.

Display messages and warning/indicator lamps

390

Warning/indicator lamp

Possible causes/consequences and M Solutions

&

WARNING Risk of burns when opening the hood

If you open the hood in the event of an overheated engine or ꢀre in the engine compartment, the following situations

may occur:

R

You may come into contact with hot gases.

R

You may come into contact with other escaping hot operating ꢄuids.

#

Before opening the hood, allow the engine to cool down.

#

In the event of a ꢀre in the engine compartment, keep the hood closed and call the ꢀre service.

#

Stop immediately in accordance with the traꢃc conditions and switch oꢁ the vehicle. Do not continue driving.

Note the messages on the instrument display.

#

If the coolant temperature display is at the lower end of the temperature scale:

#

Consult a qualiꢀed specialist workshop.

If the coolant temperature display is at the upper end of the temperature scale:

#

Exit the vehicle and keep a safe distance from it until the engine has cooled down.

#

Check the coolant level (/ page 262).

#

Make sure that the air supply to the radiator is not obstructed.

#

Avoiding high loads on the engine, drive to the nearest qualiꢀed specialist workshop. In doing so, ensure that the

coolant temperature display remains below the red area.

Display messages and warning/indicator lamps

391

Warning/indicator lamp

Possible causes/consequences and M Solutions

* The yellow coolant warning lamp is lit while the engine is running.

Possible causes:

ÿ

R

The temperature sensor is malfunctioning

Coolant warning lamp (yel-

low)

R

The charge air, transmission oil or battery cooling is faulty

R

The radiator shutters are blocked or defective

#

Avoiding high loads on the engine, drive to the nearest qualiꢀed specialist workshop.

* The yellow Check Engine warning lamp is lit while the engine is running.

A malfunction has occurred in the engine, the exhaust system or the fuel system.

;

The emission limit values may be exceeded and the engine may be in emergency mode.

Engine diagnosis warning

lamp

In some states, legal requirements stipulate that you must immediately consult a qualiꢀed specialist workshop as soon

as the yellow Check Engine warning lamp lights up.

#

Have the vehicle checked as soon as possible at a qualiꢀed specialist workshop.

* The red electrical malfunction warning lamp is lit.

There is a malfunction in the electrics.

#

Note the messages on the instrument display.

Electrical malfunction warn-

ing lamp

Display messages and warning/indicator lamps

392

Warning/indicator lamp

Possible causes/consequences and M Solutions

* The yellow fuel reserve warning lamp lights up while you are driving.

There has been pressure loss in the fuel system. The fuel ꢀller cap is not closed correctly or the fuel system is leaking.

æ

#

Close the fuel ꢀller cap.

Fuel reserve warning lamp

ꢄashes

If the fuel ꢀller cap has already been closed correctly:

#

Consult a qualiꢀed specialist workshop.

* The yellow fuel reserve warning lamp lights up while the engine is running.

The fuel supply has dropped into the reserve range.

æ

#

Refuel.

Fuel reserve warning lamp

lights up

Display messages and warning/indicator lamps

393

Brakes

Warning/indiicator lammp

Possible causes/consequences and M Solutions

*The red electric parking brake indicator lamp ꢄashes or is lit.

The yellow electric parking brake indicator lamp is also lit in the event of a malfunction.

#

F

Note the messages on the instrument display.

Electric parking brake indi-

cator lamp (red) (USA only)

!

Electric parking brake indi-

cator lamp (red) (Canada

only)

!

The electric parking brake

(yellow) indicator lamp

Display messages and warning/indicator lamps

394

Warning/indicator lamp

Possible causes/consequences and M Solutions

*The yellow é warning lamp (USA only) or the yellow J brake warning lamp (Canada only) is lit while the vehicle is

running.

é

&

WARNING Risk of an accident due to a brake system malfunction

Recuperative Brake System

warning lamp (USA only)

If the brake system is malfunctioning, braking characteristics may be impaired.

#

Drive on carefully.

#

Have the brake system checked immediately at a qualiꢀed specialist workshop.

J

#

Brakes warning lamp (yel-

low) (Canada only)

Adjust your speed and drive on carefully, leaving a suitable distance to the vehicle in front.

If the instrument display shows a display message, observe it.

Consult a qualiꢀed specialist workshop.

#

Display messages and warning/indicator lamps

395

Warning/indicator lamp

Possible causes/consequences and M Solutions

* The red brake warning lamp is lit while the vehicle is running.

Possible causes:

$

R

The brake force boosting is malfunctioning and the braking characteristics may be aꢁected.

There is insuꢃcient brake ꢄuid in the brake ꢄuid reservoir.

Brake warning lamp (USA

only)

R

#

Note the messages on the instrument display.

J

&

WARNING Risk of accident and injury if brake force boosting is malfunctioning

If brake force boosting is malfunctioning, increased brake pedal force may be necessary for braking. The braking

characteristics may be impaired. The braking distance can increase in emergency braking situations.

Brake system warning lamp

(Canada only)

#

Stop in a safe location immediately. Do not continue driving.

#

Consult a qualiꢀed specialist workshop.

&

WARNING Risk of an accident due to low brake ꢄuid level

If the brake ꢄuid level is too low, the braking eꢁect and the braking characteristics may be impaired.

#

Pull over and stop the vehicle safely as soon as possible, paying attention to road and traꢃc conditions. Do not

continue driving under any circumstances.

#

Consult a qualiꢀed specialist workshop.

#

Do not add brake ꢄuid.

Display messages and warning/indicator lamps

396

Drivingg systems

Warning/indicator lamp

Possible causes/consequences and M Solutions

* The red distance warning lamp lights up while the vehicle is in motion.

The distance to the vehicle in front is too small for the speed selected.

L

If there is an additional warning tone, you are approaching an obstacle at too high a speed.

#

Warning lamp for distance

warning function

Be prepared to brake immediately.

#

Increase the distance.

Function of Active Brake Assist (/ page 175).

* The Active Brake Assist warning lamp is on.

Due to dirty sensors or a malfunction, the system is not available or the range of functions is restricted.

Ó

#

Note the messages on the instrument display.

Active Brake Assist warning

lamp

* The Active Brake Assist warning lamp is on.

The system is switched oꢁ or the range of functions has been automatically restricted.

ê

This may be the case if the driver is not wearing a seat belt or another driving system has been activated.

#

Active Brake Assist warning

lamp

Observe the notes on Active Brake Assist (/ page 175).

Display messages and warning/indicator lamps

397

Driving safety systems

Warning/indicator lamp

Possible causes/consequences and M Solutions

* The yellow ABS warning lamp is lit while the vehicle is running.

ABS is malfunctioning.

!

If an additional warning tone sounds, EBD is malfunctioning.

ABS warning lamp

Other driving systems and driving safety systems may also be malfunctioning.

#

Note the messages on the instrument display.

&

WARNING There is a risk of skidding if EBD or ABS is malfunctioning

The wheels may lock during braking.

The steerability and braking characteristics are heavily impaired and the braking distance may increase. In addition,

other driving safety systems are switched oꢁ.

#

Drive on carefully.

#

Have the brake system checked immediately at a qualiꢀed specialist workshop.

The yellow ESP^®warning lamp ꢄashes while the vehicle is in motion.

*

One or more wheels have reached their grip limit (/ page 157).

÷

#

Adapt your driving style to suit the road and weather conditions.

ESP^®warning lamp ꢄashes

Display messages and warning/indicator lamps

398

Warning/indicator lamp

Possible causes/consequences and M Solutions

The yellow ESP^®warning lamp is lit while the vehicle is running.

*

ESP^®is malfunctioning.

÷

Other driving systems and driving safety systems (e.g. BAS) may also be malfunctioning.

#

ESP^®warning lamp lights up

Note the messages on the instrument display.

WARNING Risk of skidding if ESP^®is malfunctioning

&

If ESP^®is malfunctioning, ESP^®cannot carry out vehicle stabilization. In addition, other driving safety systems are

switched oꢁ.

#

Drive on carefully.

Have ESP^®checked at a qualiꢀed specialist workshop.

#

The yellow ESP^®OFF warning lamp is lit while the vehicle is running.

ESP^®is deactivated.

*

å

Other driving systems and driving safety systems may also be inoperative.

ESP^®OFF warning lamp

WARNING Risk of skidding when driving with ESP^®deactivated

&

ESP^®does not act to stabilize the vehicle. The availability of further driving safety systems is also limited.

#

Drive on carefully.

Deactivate ESP^®only for as long as the situation requires.

#

Display messages and warning/indicator lamps

399

Warning/indicator lamp

Possible causes/consequences and M Solutions

If ESP^®cannot be activated, ESP^®is malfunctioning.

Have ESP^®checked immediately at a qualiꢀed specialist workshop.

#

Observe the notes on deactivating ESP^®(/ page 157).

#

Tire pressuure monitor

Warning/indicator lamp

Possible causes/consequences and M Solutions

*The yellow tire pressure monitor warning lamp (pressure loss/malfunction) ꢄashes for approximately one minute and

then remains lit.

The tire pressure monitor is malfunctioning.

h

system warning lamp ꢄashes

Tire pressure monitoring

&

WARNING There is a risk of an accident if the tire pressure monitoring system is malfunctioning

The tire pressure monitoring system cannot issue a warning if there is pressure loss in one or more of the tires.

Tires with insuꢃcient tire pressure may impair the driving characteristics as well as steering and braking.

#

Have the tire pressure monitoring system checked at a qualiꢀed specialist workshop.

Display messages and warning/indicator lamps

400

Warning/indicator lamp

Possible causes/consequences and M Solutions

*The yellow tire pressure monitoring system warning lamp (pressure loss/malfunction) is lit.

The tire pressure monitoring system has detected tire pressure loss in at least one of the tires.

h

&

WARNING Risk of an accident due to insuꢃcient tire pressure

Tire pressure monitoring

system warning lamp lights

up

R

The tires can burst.

The tires can wear excessively and/or unevenly.

The driving characteristics as well as the steering and braking may be greatly impaired.

You could then lose control of the vehicle.

#

Observe the recommended tire pressures.

#

Adjust the tire pressure if necessary.

#

Stop the vehicle in accordance with the traꢃc conditions.

Check the tire pressure and the tires.

#

Display messages and warning/indicator lamps for Your Mercedes A Class 4 Door Third Generation (2018-2026)

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