2011-2017 Mercedes B Class SUV On-board computer and displays -> Display messages User Manual
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On-board computer and displays -> Display messages for Your Mercedes B Class SUV Second Generation (2011-2017)

Display messages
Introduction
General notes
Display messages appear in the multifunction display.
Display messages with graphic displays may be shown in simplified form in the Operator's Manual
and may therefore differ from the multifunction display.
Please respond in accordance with the display messages and follow the additional notes in this
Operator's Manual.
Certain display messages are accompanied by an audible warning tone or a continuous tone.
When the ignition is switched off, all display messages are deleted, apart from some high-priority
display messages. Once the causes of the high-priority display messages have been rectified, the
corresponding display messages are also deleted.
When you stop and park the vehicle, please observe the notes on:
R
HOLD function (Y page 138)
R
Parking (Y page 128)
Hiding display messages
X
Press the a or % button on the steering wheel.
The multifunction display hides the display message.
The multifunction display shows high-priority display messages in red. Some high-priority display
messages cannot be hidden.
The multifunction display shows these messages continuously until the causes for the messages
have been remedied.
Message memory
The on-board computer saves certain display messages in the message memory. You can call up
the display messages:
X
Press the = or ; button on the steering wheel to select the
Serv.Serv. menu.
If there are display messages, the multifunction display shows
2 Messages2 Messages, for example.
X
Press the 9 or : button to select the entry, e.g.
2 Messages2 Messages.
X
Press a to confirm.
X
Press the 9 or : button to scroll through the display messages.
Display messages
167
On-board computer and displays
Z
Safety systems
Display messages
Possible causes/consequences and MM Solutions
!÷
Currently Unavaila‐Currently Unavaila‐
ble See Operator'sble See Operator's
ManualManual
ABS (Anti-lock Braking System), BAS (Brake Assist), ESP
®
(Electronic
Stability Program), the HOLD function, RBS (Recuperative Brake Sys-
tem) and hill start assist are temporarily unavailable.
Active Brake Assist may have also failed.
The !, ÷, å and é (USA only) or J (Canada only)
warning lamps in the instrument cluster may also light up.
ATTENTION ASSIST is deactivated.
Possible causes are:
R
Self-diagnosis is not yet complete.
R
The on-board voltage may be insufficient.
G
WARNING
The braking performance of the electric motor using recuperative
braking may be either reduced or not effective. If you do not make an
additional effort to apply the brake yourself, the braking effect may not
be sufficient. If necessary, counteract the reduced regenerative brak-
ing effect by applying the brake yourself.
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you brake
hard, for example.
The steerability and braking characteristics may be severely affected.
The braking distance in an emergency braking situation can increase.
If ESP
®
is not operational, ESP
®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X
Carefully drive a short distance on a suitable stretch of road, making
slight steering movements at a speed above 12 mph (20 km/h).
If the display message disappears, the functions mentioned above
are available again.
If the multifunction display still shows the display message:
X
Drive on carefully.
X
Visit a qualified specialist workshop immediately.
!÷
Inoperative SeeInoperative See
Operator's ManualOperator's Manual
ABS, BAS, ESP
®
, the HOLD function, RBS and hill start assist are not
available due to a malfunction.
Active Brake Assist may have also failed.
The !, ÷, å, é (USA only) or J (Canada only) and
$ (USA only) or J (Canada only) warning lamps in the instru-
ment cluster may also light up.
ATTENTION ASSIST is deactivated.
G
WARNING
The braking performance of the electric motor using recuperative
braking may be either reduced or not effective. If you do not make an
additional effort to apply the brake yourself, the braking effect may not
be sufficient. If necessary, counteract the reduced regenerative brak-
ing effect by applying the brake yourself.
168
Display messages
On-board computer and displays
Display messages
Possible causes/consequences and MM Solutions
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you brake
hard, for example.
The steerability and braking characteristics may be severely affected.
The braking distance in an emergency braking situation can increase.
If ESP
®
is not operational, ESP
®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X
Drive on carefully.
X
Visit a qualified specialist workshop immediately.
÷
Currently Unavaila‐Currently Unavaila‐
ble See Operator'sble See Operator's
ManualManual
ESP
®
, BAS, the HOLD function, RBS and hill start assist are tempora-
rily unavailable.
Active Brake Assist may have also failed.
The , ÷, å and é (USA only) or J (Canada only) warning
lamps in the instrument cluster may also light up.
ATTENTION ASSIST is deactivated.
The self-diagnosis function might not be complete, for example.
G
WARNING
The braking performance of the electric motor using recuperative
braking may be either reduced or not effective. If you do not make an
additional effort to apply the brake yourself, the braking effect may not
be sufficient. If necessary, counteract the reduced regenerative brak-
ing effect by applying the brake yourself.
The brake system continues to function normally, but without the
functions listed above.
The braking distance in an emergency braking situation can thus
increase.
If ESP
®
is not operational, ESP
®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X
Carefully drive a suitable distance, making slight steering move-
ments at a speed above 12 mph (20 km/h).
If the display message disappears, the functions mentioned above
are available again.
If the multifunction display still shows the display message:
X
Drive on carefully.
X
Visit a qualified specialist workshop immediately.
Display messages
169
On-board computer and displays
Z
Display messages
Possible causes/consequences and MM Solutions
÷
Currently Unavaila‐Currently Unavaila‐
ble See Operator'sble See Operator's
ManualManual
ESP
®
, BAS, the HOLD function, RBS and hill start assist are not avail-
able due to a malfunction.
Active Brake Assist may have also failed.
The , ÷, å and é (USA only) or J (Canada only) warning
lamps in the instrument cluster may also light up.
ATTENTION ASSIST is deactivated.
G
WARNING
The braking performance of the electric motor using recuperative
braking may be either reduced or not effective. If you do not make an
additional effort to apply the brake yourself, the braking effect may not
be sufficient. If necessary, counteract the reduced regenerative brak-
ing effect by applying the brake yourself.
The brake system continues to function normally, but without the
functions listed above.
The braking distance in an emergency braking situation can thus
increase.
If ESP
®
is not operational, ESP
®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X
Drive on carefully.
X
Visit a qualified specialist workshop immediately.
T!
÷
Inoperative SeeInoperative See
Operator's ManualOperator's Manual
EBD (electronic brake force distribution), ABS, BAS, ESP
®
, the HOLD
function, RBS and hill start assist are not available due to a malfunc-
tion.
Active Brake Assist may have also failed.
A warning tone sounds.
The ÷, å, ! and é (USA only) or J (Canada only)
warning lamps in the instrument cluster may also light up.
G
WARNING
The braking performance of the electric motor using recuperative
braking may be either reduced or not effective. If you do not make an
additional effort to apply the brake yourself, the braking effect may not
be sufficient. If necessary, counteract the reduced regenerative brak-
ing effect by applying the brake yourself.
The brake system continues to function normally, but without the
functions listed above. The front and rear wheels could therefore lock
if you brake hard, for example.
The steerability and braking characteristics may be severely affected.
The braking distance in an emergency braking situation can increase.
If ESP
®
is not operational, ESP
®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X
Drive on carefully.
X
Visit a qualified specialist workshop immediately.
170
Display messages
On-board computer and displays
Display messages
Possible causes/consequences and MM Solutions
F(USA
only)!(Canada
only)
Turn On the Igni‐Turn On the Igni‐
tiontion toto ReleaseRelease thethe
Parking BrakeParking Brake
The red F (USA only) or ! (Canada only) indicator lamp lights
up.
You attempted to release the electric parking brake while the ignition
was switched off.
X
SmartKey: turn the SmartKey to position 1 in the ignition lock.
X
KEYLESS-GO: switch on the ignition.
F(USA
only)!(Canada
only)
PleasePlease ReleaseRelease Park‐Park‐
ing Brakeing Brake
The red F (USA only) or ! (Canada only) indicator lamp flashes
and a warning tone sounds. A condition for automatic release of the
electric parking brake is not fulfilled (Y page 130).
You are driving with the electric parking brake applied.
X
Release the electric parking brake manually.
The red F (USA only) or ! (Canada only) indicator lamp flashes
and a warning tone sounds.
You are using the electric parking brake for emergency braking
(Y page 130).
F(USA
only)!(Canada
only)
Parking Brake SeeParking Brake See
Operator's ManualOperator's Manual
The yellow ! warning lamp lights up.
The electric parking brake is malfunctioning.
To apply:
X
Switch the ignition off.
X
Press the electric parking brake handle for at least ten seconds.
X
Shift the transmission to position P.
X
Consult a qualified specialist workshop.
The yellow ! warning lamp and the red F (USA only) or !
(Canada only) indicator lamp light up.
The electric parking brake is malfunctioning.
To release:
X
Switch off the ignition and turn it back on.
X
Release the electric parking brake manually.
or
X
Release the electric parking brake automatically (Y page 130).
If the electric parking brake still cannot be released:
X
Do not drive on.
X
Consult a qualified specialist workshop.
Display messages
171
On-board computer and displays
Z
Display messages
Possible causes/consequences and MM Solutions
The red F (USA only) or ! (Canada only) indicator lamp flashes
and the yellow ! warning lamp lights up.
The electric parking brake is malfunctioning.
To release:
X
Switch off the ignition and turn it back on.
X
Release the electric parking brake manually.
To apply:
X
Switch off the ignition and turn it back on.
X
Apply the electric parking brake manually.
If the red F (USA only) or ! (Canada only) indicator lamp con-
tinues to flash:
X
Do not drive on.
X
Secure the vehicle against rolling away (Y page 276).
X
Shift the transmission to position P.
X
Turn the front wheels towards the curb.
X
Consult a qualified specialist workshop.
The yellow ! warning lamp lights up. The red F (USA only)
or ! (Canada only) indicator lamp flashes for about ten seconds
after the electric parking brake has been applied or released. It then
goes out or remains lit.
The electric parking brake is malfunctioning.
X
Switch off the ignition and turn it back on.
X
Apply the electric parking brake.
If it is not possible to engage the electric parking brake:
X
Shift the transmission to position P.
X
Visit a qualified specialist workshop.
If it is not possible to release the electric parking brake manually:
X
Release the electric parking brake automatically (Y page 130).
If the electric parking brake still cannot be released:
X
Consult a qualified specialist workshop.
The yellow ! warning lamp lights up. If you manually apply or
release the electric parking brake, the red F (USA only) or !
(Canada only) indicator lamp flashes.
The electric parking brake is malfunctioning. It is not possible to apply
the electric parking brake manually.
X
Shift the selector lever to P, as the electric parking brake is not
applied automatically.
X
Visit a qualified specialist workshop.
172
Display messages
On-board computer and displays
Display messages
Possible causes/consequences and MM Solutions
F(USA
only)!(Canada
only)
Parking Brake Inop‐Parking Brake Inop‐
erativeerative
The yellow ! warning lamp lights up. The red F (USA only)
or ! (Canada only) indicator lamp flashes for about ten seconds
after the electric parking brake has been applied or released. It then
goes out or remains lit.
The electric parking brake is malfunctioning, e.g. because of over-
voltage or undervoltage.
X
Rectify the cause of the overvoltage or undervoltage, e.g. by charg-
ing the battery or restarting the drive system.
X
Engage or release the electric parking brake.
If it remains impossible to apply or release the electric parking brake:
X
Switch off the ignition and turn it back on.
X
Engage or release the electric parking brake.
If the electric parking brake still cannot be released:
X
Consult a qualified specialist workshop.
If the electric parking brake still cannot be applied:
X
Visit a qualified specialist workshop.
The yellow ! warning lamp lights up and the red F (USA only)
or ! (Canada only) indicator lamp flashes.
It is not possible to apply the electric parking brake manually.
X
Shift the transmission to position P.
X
Visit a qualified specialist workshop.
$(USA
only)J(Canada
only)
Check Brake FluidCheck Brake Fluid
LevelLevel
There is not enough brake fluid in the brake fluid reservoir.
A warning tone sounds. The $ (USA only) or J (Canada only)
warning lamps in the instrument cluster may also light up.
G
WARNING
The braking effect may be impaired.
There is a risk of an accident.
X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
X
Secure the vehicle against rolling away (Y page 128).
X
Consult a qualified specialist workshop.
X
Do not add brake fluid. This does not correct the malfunction.
#
CheckCheck BrakeBrake PadPad WearWear
The brake pads/linings have reached their wear limit.
X
Visit a qualified specialist workshop.
G
InoperativeInoperative
One or more main features of the mbrace system are malfunctioning.
X
Visit a qualified specialist workshop.
Display messages
173
On-board computer and displays
Z
Display messages
Possible causes/consequences and MM Solutions
ActiveActive BrakeBrake AssistAssist
FunctionsFunctions CurrentlyCurrently
Limited See Opera‐Limited See Opera‐
tor's Manualtor's Manual
Active Brake Assist is temporarily inoperative.
Possible causes are:
R
the radar sensor system is temporarily inoperative, e.g. due to elec-
tromagnetic radiation emitted by nearby TV or radio stations or
other sources of electromagnetic radiation
R
the system is outside the operating temperature range
R
the on-board voltage is too low
When the causes stated above no longer apply, the display message
disappears.
Active Brake Assist is operational again.
If the display message does not disappear:
X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X
Secure the vehicle against rolling away (Y page 128).
X
Start the drive system again.
Active BrakeActive Brake
Assist:Assist: SystemSystem Inop‐Inop‐
erativeerative
Active Brake Assist is unavailable due to a malfunction. Situation-
dependent parking assistance may also have failed.
X
Visit a qualified specialist workshop immediately.
RadarRadar SensorsSensors DirtyDirty
See Operator's Man‐See Operator's Man‐
ualual
The radar sensor system is malfunctioning.
Possible causes are:
R
Dirt on sensors
R
Heavy rain or snow
R
When driving on inter-urban roads without traffic or infrastructure,
e.g. in desert-like areas
Active Brake Assist is malfunctioning or is temporarily unavailable.
A warning tone also sounds.
Active Brake Assist is available again once the cause of the problem is
no longer present. The display message disappears.
If the display message does not disappear:
X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X
Secure the vehicle against rolling away (Y page 128).
X
Switch off the drive system.
X
Clean all sensors (Y page 237).
X
Start the drive system again.
The display message disappears.
ã
Acoustic VehicleAcoustic Vehicle
Indication Inopera‐Indication Inopera‐
tivetive
The sound generator is not working. The vehicle can still be driven;
however, no vehicle sounds can be generated. As a result, your vehicle
may not be heard by other road users until it is very close to them, or
it may not be heard at all.
X
Drive with particular care, allowing for the possibility that other road
users may behave unpredictably.
X
Visit a qualified specialist workshop.
174
Display messages
On-board computer and displays
Display messages
Possible causes/consequences and MM Solutions
6
SRSSRS MalfunctionMalfunction Ser‐Ser‐
vice Requiredvice Required
The restraint system is malfunctioning. The 6 warning lamp also
lights up in the instrument cluster.
G
WARNING
The air bags or Emergency Tensioning Devices may either be triggered
unintentionally or, in the event of an accident, may not be triggered.
There is an increased risk of injury.
X
Visit a qualified specialist workshop immediately.
For further information about the restraint system, see (Y page 38).
6
Front Left Malfunc‐Front Left Malfunc‐
tion Servicetion Service
RequiredRequired or FrontFront
Right Malfunction
Right Malfunction
Service RequiredService Required
The restraint system is malfunctioning at the front on the left or right.
The 6 warning lamp also lights up in the instrument cluster.
G
WARNING
The air bags or Emergency Tensioning Devices may either be triggered
unintentionally or, in the event of an accident, may not be triggered.
There is an increased risk of injury.
X
Visit a qualified specialist workshop immediately.
6
Rear Left Malfunc‐Rear Left Malfunc‐
tion Servicetion Service
RequiredRequired or RearRear
Right Malfunction
Right Malfunction
Service RequiredService Required
The rear left-hand or right-hand restraint system is malfunctioning.
The 6 warning lamp also lights up in the instrument cluster.
G
WARNING
The air bags or Emergency Tensioning Devices may either be triggered
unintentionally or, in the event of an accident, may not be triggered.
There is an increased risk of injury.
X
Visit a qualified specialist workshop immediately.
6
RearRear CenterCenter Malfunc‐Malfunc‐
tion Servicetion Service
RequiredRequired
The rear center restraint system is malfunctioning. The 6 warning
lamp also lights up in the instrument cluster.
G
WARNING
The air bags or Emergency Tensioning Devices may either be triggered
unintentionally or, in the event of an accident, may not be triggered.
There is an increased risk of injury.
X
Visit a qualified specialist workshop immediately.
6
Left Side CurtainLeft Side Curtain
Airbag MalfunctionAirbag Malfunction
Service RequiredService Required or
Right Side CurtainRight Side Curtain
Airbag MalfunctionAirbag Malfunction
Service RequiredService Required
The left-hand or right-hand window curtain air bag is malfunctioning.
The 6 warning lamp also lights up in the instrument cluster.
G
WARNING
The left or right window curtain air bag may either be triggered unin-
tentionally or, in the event of an accident, may not be triggered.
There is an increased risk of injury.
X
Visit a qualified specialist workshop immediately.
Display messages
175
On-board computer and displays
Z
Display messages
Possible causes/consequences and MM Solutions
FrontFront PassengerPassenger Air‐Air‐
bag Disabled Seebag Disabled See
Operator's ManualOperator's Manual
The front-passenger front air bag is deactivated during the journey,
even though:
R
an adult
or
R
a person of the corresponding stature is on the front-passenger seat
If additional forces are applied to the seat, the system may interpret
the occupant's weight as lower than it actually is.
G
WARNING
The front-passenger air bag does not deploy during an accident.
There is an increased risk of injury.
X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X
Secure the vehicle against rolling away (Y page 128).
X
Switch the ignition off.
X
Have the occupant get out of the vehicle.
X
Keep the seat unoccupied, close the front-passenger door and
switch on the ignition.
X
Observe the PASSENGER AIR BAG indicator lamps in the center
console and the multifunction display and check the following:
Seat unoccupied and ignition switched on:
R
a self-diagnosis is carried out. The PASSENGER AIR BAG OFF and
PASSENGER AIR BAG ON indicator lamps must light up simulta-
neously for approximately six seconds
R
the PASSENGER AIR BAG OFF indicator lamp must then light up
and remain lit after the self-diagnosis. If the indicator lamp is on,
OCS (Occupant Classification System) has disabled the front-
passenger front air bag (Y page 46)
R
The
Front Passenger Airbag Enabled See Operator'sFront Passenger Airbag Enabled See Operator's
Manual
Manual or Front Passenger¶Airbag Disabled¶See Opera‐Front Passenger¶Airbag Disabled¶See Opera‐
tor's Manual
tor's Manual display messages must not be shown in the mul-
tifunction display
X
Wait for a period of at least 60 seconds until the necessary system
checks have been completed.
X
Make sure that the display messages do not appear in the multi-
function display.
If these conditions are fulfilled, the front-passenger seat can be occu-
pied again. Whether the PASSENGER AIR BAG OFF or ON indicator
lamp remains lit or goes out depends on how OCS classifies the occu-
pant.
If the conditions are not fulfilled, the system is not operating correctly.
X
Visit a qualified specialist workshop immediately.
For further information about the Occupant Classification System, see
(Y page 46).
176
Display messages
On-board computer and displays
Display messages
Possible causes/consequences and MM Solutions
FrontFront PassengerPassenger Air‐Air‐
bag Enabled Seebag Enabled See
Operator's ManualOperator's Manual
The front-passenger front air bag is enabled during the journey, even
though:
R
a child, a small adult or an object weighing less than the system's
weight threshold is located on the front-passenger seat
or
R
the front-passenger seat is unoccupied
The system may detect objects or forces applying additional weight on
the seat.
G
WARNING
The front-passenger front air bag may deploy unintentionally.
There is an increased risk of injury.
X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X
Secure the vehicle against rolling away (Y page 128).
X
Switch the ignition off.
X
Open the front-passenger door.
X
Remove the child and the child restraint system from the front-
passenger seat.
X
Make sure that there are no objects on the seat adding to the
weight.
The system may otherwise detect the additional weight and inter-
pret the seat occupant's weight as greater than it actually is.
X
Keep the seat unoccupied, close the front-passenger door and
switch on the ignition.
X
Observe the PASSENGER AIR BAG indicator lamps in the center
console and the multifunction display and check the following:
Seat unoccupied and ignition switched on:
R
a self-diagnosis is carried out. The PASSENGER AIR BAG OFF and
PASSENGER AIR BAG ON indicator lamps must light up simulta-
neously for approximately six seconds
R
the PASSENGER AIR BAG OFF indicator lamp must then light up
and remain lit after the self-diagnosis. If the indicator lamp is on,
OCS has disabled the front-passenger front air bag (Y page 46)
R
The
Front Passenger Airbag Enabled See Operator'sFront Passenger Airbag Enabled See Operator's
Manual
Manual or Front Passenger Airbag Disabled See Opera‐Front Passenger Airbag Disabled See Opera‐
tor's Manual
tor's Manual display messages must not be shown in the mul-
tifunction display
X
Wait for a period of at least 60 seconds until the necessary system
checks have been completed.
X
Make sure that the display messages do not appear in the multi-
function display.
If these conditions are fulfilled, the front-passenger seat can be occu-
pied again. Whether the PASSENGER AIR BAG OFF or ON indicator
lamp remains lit or goes out depends on how OCS classifies the occu-
pant.
If the conditions are not fulfilled, the system is not operating correctly.
Display messages
177
On-board computer and displays
Z
Display messages
Possible causes/consequences and MM Solutions
X
Visit a qualified specialist workshop immediately.
For further information about the Occupant Classification System, see
(Y page 46).
Lights
i
Vehicles with LED bulbs in the light clusters:
The display message for the corresponding lamp only appears when all of the LEDs in the lamp
have failed.
Display messages
Possible causes/consequences and MM Solutions
b
Check Left Corner‐Check Left Corner‐
ing Lighting Light or CheckCheck
Right Cornering
Right Cornering
LightLight
The left or right-hand cornering light is defective.
X
Check whether you are permitted to replace the bulb yourself
(Y page 90).
or
X
Visit a qualified specialist workshop.
b
CheckCheck LeftLeft LowLow BeamBeam
or Check Right LowCheck Right Low
Beam
Beam
The left or right-hand low-beam headlamp is defective.
X
Check whether you are permitted to replace the bulb yourself
(Y page 90).
or
X
Visit a qualified specialist workshop.
b
Check Rear LeftCheck Rear Left
Turn SignalTurn Signal or
Check Rear RightCheck Rear Right
Turn SignalTurn Signal
The rear left-hand or rear right-hand turn signal is defective.
X
Check whether you are permitted to replace the bulb yourself
(Y page 90).
or
X
Visit a qualified specialist workshop.
b
Check Front LeftCheck Front Left
Turn SignalTurn Signal or
Check Front RightCheck Front Right
Turn SignalTurn Signal
The front left-hand or front right-hand turn signal is defective.
X
Check whether you are permitted to replace the bulb yourself
(Y page 90).
or
X
Visit a qualified specialist workshop.
b
Check Left MirrorCheck Left Mirror
Turn SignalTurn Signal or
Check Right MirrorCheck Right Mirror
Turn SignalTurn Signal
The turn signal in the left-hand or right-hand exterior mirror is defec-
tive.
X
Visit a qualified specialist workshop.
b
Check Center BrakeCheck Center Brake
LampLamp
The high-mounted brake lamp is faulty.
X
Visit a qualified specialist workshop.
178
Display messages
On-board computer and displays
Display messages
Possible causes/consequences and MM Solutions
b
Check Left BrakeCheck Left Brake
LampLamporCheck RightCheck Right
Brake Lamp
Brake Lamp
The left or right-hand brake lamp is defective.
X
Visit a qualified specialist workshop.
b
Check Left HighCheck Left High
BeamBeam or Check RightCheck Right
High Beam
High Beam
The left or right-hand high beam is defective.
X
Check whether you are permitted to replace the bulb yourself
(Y page 90).
or
X
Visit a qualified specialist workshop.
b
License Plate LampLicense Plate Lamp
The left or right-hand license plate lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 90).
or
X
Visit a qualified specialist workshop.
b
Rear Fog LampRear Fog Lamp
The rear fog lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 90).
or
X
Visit a qualified specialist workshop.
b
Check Front LeftCheck Front Left
Parking LampParking Lamp or
Check Front RightCheck Front Right
Parking LampParking Lamp
The front left or front right parking or standing lamp is defective.
X
Check whether you are permitted to replace the bulb yourself
(Y page 90).
or
X
Visit a qualified specialist workshop.
b
Backup LightBackup Light
The backup lamp is defective.
X
Check whether you are permitted to replace the bulb yourself
(Y page 90).
or
X
Visit a qualified specialist workshop.
b
Check Left TailCheck Left Tail
LampLamp or Check RightCheck Right
Tail Lamp
Tail Lamp
The left or right-hand tail lamp is defective.
X
Visit a qualified specialist workshop.
b
Check Front LeftCheck Front Left
Sidemarker LampSidemarker Lamp or
Check Front RightCheck Front Right
Sidemarker LampSidemarker Lamp
The front left-hand or front right-hand side marker lamp is faulty.
X
Visit a qualified specialist workshop.
Display messages
179
On-board computer and displays
Z
Display messages
Possible causes/consequences and MM Solutions
b
Check Rear LeftCheck Rear Left
Sidemarker LampSidemarker Lamp or
Check Rear RightCheck Rear Right
Sidemarker LampSidemarker Lamp
The rear left-hand or rear right-hand side marker lamp is faulty.
X
Check whether you are permitted to replace the bulb yourself
(Y page 90).
or
X
Visit a qualified specialist workshop.
b
Check Left DaytimeCheck Left Daytime
Running LightRunning Light or
CheckCheck RightRight DaytimeDaytime
Running LightRunning Light
The left or right-hand daytime running lamp is faulty.
X
Visit a qualified specialist workshop.
b
Active HeadlampsActive Headlamps
InoperativeInoperative
The active light function is faulty.
X
Visit a qualified specialist workshop.
b
Malfunction SeeMalfunction See
Operator's ManualOperator's Manual
The exterior lighting is malfunctioning.
X
Visit a qualified specialist workshop.
b
Auto Lamp FunctionAuto Lamp Function
InoperativeInoperative
The light sensor is defective.
X
Visit a qualified specialist workshop.
b
Switch Off LightsSwitch Off Lights
The lights are still switched on when you leave the vehicle. A warning
tone also sounds.
X
Turn the light switch to the à position.
b
Switch On HeadlampsSwitch On Headlamps
You are driving with low-beam headlamps switched off.
X
Turn the light switch to the L or à position.
180
Display messages
On-board computer and displays
Drive system
Display messages
Possible causes/consequences and MM Solutions
+
Check Coolant SeeCheck Coolant See
Operator's ManualOperator's Manual
The coolant level is too low.
!
Avoid making long journeys with too little coolant in the cooling
system. The drive system will otherwise be damaged.
X
If the coolant needs topping up more often than usual, have the
cooling system checked at a qualified specialist workshop.
#
See Operator's Man‐See Operator's Man‐
ualual
The 12 V battery is no longer being charged.
X
Stop the vehicle immediately, paying attention to road and traffic
conditions, and switch off the drive system.
X
Secure the vehicle against rolling away (Y page 128).
X
Do not drive on.
X
Do not tow the vehicle.
X
Consult a qualified specialist workshop.
#
Stop Vehicle SeeStop Vehicle See
Operator's ManualOperator's Manual
The 12 V battery is no longer being charged and the battery charge
level is too low.
A warning tone also sounds.
X
Stop the vehicle immediately, paying attention to road and traffic
conditions, and switch off the drive system.
X
Secure the vehicle against rolling away (Y page 128).
X
Do not drive on.
X
Do not tow the vehicle.
X
Consult a qualified specialist workshop.
High-voltage battery
Display messages
Possible causes/consequences and MM Solutions
Ý
Battery ReserveBattery Reserve
LevelLevel
The condition of charge of the high-voltage battery has dropped into
the reserve range.
When the remaining range is 0 km, the message appears again. The
power available is then continuously reduced. The reduction in power
is represented in the E-CELL display (Y page 152).
X
Charge the high-voltage battery.
Û
BatterieleistungBatterieleistung zuzu
gering, Anhalten,gering, Anhalten,
sofort ladensofort laden(Battery
capacity too low. Stop
Charge immediately)
A warning tone also sounds. The E‑CELL display (Y page 152) and the
charge level display (Y page 153) go down to 0. The condition of
charge of the high-voltage battery is so low that operation is no longer
possible. The drive system cannot be restarted.
If you then try to restart the drive system, the
BatterieleistungBatterieleistung zuzu
gering,
gering, Anhalten,Anhalten, sofortsofort ladenladen (Battery capacity too low. Stop
Charge immediately) message appears.
X
Park the vehicle and charge the high-voltage battery.
Display messages
181
On-board computer and displays
Z
Display messages
Possible causes/consequences and MM Solutions
ì
Malfunction VisitMalfunction Visit
WorkshopWorkshop
Malfunctions are present in the drive system and/or in the cooling
system.
X
Visit a qualified specialist workshop immediately.
Without startingWithout starting
engine again, con‐engine again, con‐
sult workshopsult workshop
The vehicle's high-voltage electrical system is malfunctioning. A warn-
ing tone also sounds.
X
Do not switch off the drive system.
X
Visit a qualified specialist workshop immediately.
ì
Stop Switch EngineStop Switch Engine
OffOff
There is a serious malfunction in the drive system. A warning tone also
sounds.
X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
X
Do not tow the vehicle.
X
Consult a qualified specialist workshop immediately.
Driving systems
Display messages
Possible causes/consequences and MM Solutions
À
Attention Assist:Attention Assist:
Take a Break!Take a Break!
Based on certain criteria, ATTENTION ASSIST has detected fatigue or
a lack of concentration on the part of the driver. A warning tone also
sounds.
X
If necessary, take a break.
During long journeys, take regular breaks in good time so you get
enough rest.
À
Attention AssistAttention Assist
InoperativeInoperative
ATTENTION ASSIST is inoperative.
X
Visit a qualified specialist workshop.
ë
OffOff
The HOLD function is deactivated. the vehicle is skidding.
A warning tone also sounds.
X
Reactivate the HOLD function later (Y page 138).
The HOLD function is deactivated. When the brake pedal is firmly
depressed, an activation condition is not fulfilled.
A warning tone also sounds.
X
Check the activation conditions for the HOLD function
(Y page 138).
182
Display messages
On-board computer and displays
Display messages
Possible causes/consequences and MM Solutions
Blind Spot AssistBlind Spot Assist
Currently Unavaila‐Currently Unavaila‐
ble See Operator'sble See Operator's
ManualManual
Blind Spot Assist is temporarily inoperative.
Possible causes are:
R
the radar sensor system is temporarily inoperative, e.g. due to elec-
tromagnetic radiation emitted by nearby TV or radio stations or
other sources of electromagnetic radiation
R
the radar sensor system is outside the operating temperature range
The yellow 9 indicator lamps also light up in the exterior mirrors.
When the causes stated above no longer apply, the display message
disappears.
Blind Spot Assist is operational again.
If the display message does not disappear:
X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X
Secure the vehicle against rolling away (Y page 128).
X
Start the drive system again.
Blind Spot AssistBlind Spot Assist
InoperativeInoperative
Blind Spot Assist is faulty.
The yellow 9 indicator lamps also light up in the exterior mirrors.
X
Visit a qualified specialist workshop.
Parking Pilot Can‐Parking Pilot Can‐
celedceled
The driver's door is open and the driver's seat belt has not been fas-
tened.
X
Repeat the parking process with the seat belt fastened and the
driver's door closed.
You have inadvertently touched the multifunction steering wheel while
steering intervention was active.
X
While steering intervention is active, make sure that the multifunc-
tion steering wheel is not touched unintentionally.
The vehicle has started to skid and ESP
®
has intervened.
X
Use Parking Pilot again later (Y page 142).
Parking Pilot Inop‐Parking Pilot Inop‐
erativeerative
You have just carried out a large number of turning or parking maneu-
vers.
Parking Pilot will become available again after approximately ten
minutes (Y page 142).
X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X
Switch off the drive system and start it again.
If the multifunction display still shows the display message:
X
Visit a qualified specialist workshop.
Parking Assist PARKTRONIC is malfunctioning.
X
Visit a qualified specialist workshop.
Display messages
183
On-board computer and displays
Z
Display messages
Possible causes/consequences and MM Solutions
Parking Pilot Fin‐Parking Pilot Fin‐
ishedished
The vehicle is parked. A warning tone also sounds.
The display message disappears automatically.
CruiseCruise ControlControl Inop‐Inop‐
erativeerative
Cruise control is malfunctioning.
A warning tone also sounds.
X
Visit a qualified specialist workshop.
Cruise ControlCruise Control
- - - mph- - - mph
R
A condition for activating cruise control has not been fulfilled.
You have tried to store a speed below 20 mph (30 km/h), for exam-
ple.
R
ESP
®
is deactivated. The yellow ESP
®
OFF warning lamp is lit.
X
If conditions permit, drive faster than 20 mph (30 km/h) and store
the speed.
or
X
Check the activation conditions for cruise control (Y page 136).
or
X
Reactivate ESP
®
(Y page 162).
184
Display messages
On-board computer and displays
Tires
Display messages
Possible causes/consequences and MM Solutions
PleasePlease CorrectCorrect TireTire
PressurePressure
The tire pressure is too low in at least one of the tires, or the tire
pressure difference between the wheels is too great.
X
Check the tire pressures at the next opportunity (Y page 263).
X
If necessary, correct the tire pressure.
X
Restart the tire pressure monitor (Y page 265).
Check TiresCheck Tires
The tire pressure in one or more tires has dropped significantly. The
wheel position appears in the multifunction display.
A warning tone also sounds.
G
WARNING
Tire pressures that are too low pose the following hazards:
R
they may burst, especially as the load and vehicle speed increase
R
they may wear excessively and/or unevenly, which may greatly
impair tire traction.
R
the driving characteristics, as well as steering and braking, may be
greatly impaired
There is a risk of an accident.
X
Stop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
X
Secure the vehicle against rolling away (Y page 128).
X
Check the tires and, if necessary, follow the instructions for a flat
tire (Y page 241).
X
Check the tire pressure (Y page 263).
X
If necessary, correct the tire pressure.
Warning Tire Mal‐Warning Tire Mal‐
functionfunction
The tire pressure in one or more tires has dropped suddenly. The wheel
position appears in the multifunction display.
G
WARNING
Driving with a flat tire poses a risk of the following hazards:
R
a flat tire affects the ability to steer or brake the vehicle
R
you could lose control of the vehicle
R
continued driving with a flat tire will cause excessive heat build-up
and possibly a fire
There is a risk of an accident.
X
Stop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
X
Secure the vehicle against rolling away (Y page 128).
X
Check the tires and, if necessary, follow the instructions for a flat
tire (Y page 241).
Display messages
185
On-board computer and displays
Z
Display messages
Possible causes/consequences and MM Solutions
TireTire Press.Press. MonitorMonitor
Currently Unavaila‐Currently Unavaila‐
bleble
Because there is interference from a strong source of radio waves, no
signals from the tire pressure sensors are detected. The tire pressure
monitor is temporarily malfunctioning.
X
Drive on.
The tire pressure monitor restarts automatically as soon as the
problem has been resolved.
TirePress. Sen‐TirePress. Sen‐
sor(s) Missingsor(s) Missing
There is no signal from the tire pressure sensor of one or several
wheels. The pressure of the affected tire does not appear in the mul-
tifunction display.
X
Have the faulty tire pressure sensor replaced at a qualified special-
ist workshop.
Tire Pressure Moni‐Tire Pressure Moni‐
tor Inoperative Notor Inoperative No
Wheel SensorsWheel Sensors
The wheels mounted do not have a suitable tire pressure sensor. The
tire pressure monitor is deactivated.
X
Mount wheels with suitable tire pressure sensors.
The tire pressure monitor is activated automatically after driving for
a few minutes.
TireTire Press.Press. MonitorMonitor
InoperativeInoperative
The tire pressure monitor is faulty.
X
Visit a qualified specialist workshop.
Vehicle
Display messages
Possible causes/consequences and MM Solutions
Depress Brake toDepress Brake to
Start EngineStart Engine
You have attempted to start the drive system with the transmission in
position N without depressing the brake pedal.
X
Depress the brake pedal.
ToTo DeselectDeselect PP oror N,N,
Depress Brake andDepress Brake and
Start EngineStart Engine
You have attempted to shift the transmission to position R or D with-
out starting the drive system.
X
Start the drive system.
X
Depress the brake pedal.
i
It is only possible to shift the transmission from position P to the
desired position if you depress the brake pedal. Only then can the
parking lock be deactivated. If you do not depress the brake pedal,
the DIRECT SELECT lever can still be moved but the parking lock
remains engaged.
i
At transmission fluid temperatures below Ò4 ‡ (Ò20 †) you can
only shift out of position P into another transmission position when
the engine is running.
Apply Brake toApply Brake to
Shift from 'P'
Shift from 'P'
You have attempted to shift the transmission to position R, N or D
without depressing the brake pedal.
X
Depress the brake pedal.
186
Display messages
On-board computer and displays
Display messages
Possible causes/consequences and MM Solutions
TransmissionTransmission NotNot inin
P Risk of VehicleP Risk of Vehicle
Rolling AwayRolling Away
The driver's door is open or not fully closed and the transmission is in
position R, N or D.
A warning tone also sounds.
G
WARNING
The vehicle may roll away.
There is a risk of an accident.
X
Shift the transmission to position P.
X
Secure the vehicle against rolling away (Y page 128).
X
Close the driver's door completely.
ServiceService RequiredRequired DoDo
Not Shift GearsNot Shift Gears
Visit DealerVisit Dealer
You cannot change the transmission position due to a malfunction.
A warning tone also sounds.
If transmission position D is selected:
X
Drive to a qualified specialist workshop without shifting the trans-
mission from position D.
If transmission position R, N or P is selected:
X
Secure the vehicle against rolling away (Y page 128).
X
Notify a qualified specialist workshop or breakdown service.
X
Do not tow the vehicle.
Only Shift to 'P'Only Shift to 'P'
whenwhen VehicleVehicle isis Sta‐Sta‐
tionarytionary
The vehicle is moving.
X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X
Shift the transmission to position P.
A
The tailgate is open.
X
Close the tailgate.
?
The hood is open.
A warning tone also sounds.
G
WARNING
The open hood may block your view when the vehicle is in motion.
There is a risk of an accident.
X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X
Secure the vehicle against rolling away (Y page 128).
X
Close the hood.
C
At least one door is open. A warning tone also sounds.
X
Close all the doors.
Display messages
187
On-board computer and displays
Z
Display messages
Possible causes/consequences and MM Solutions
Ð
Power Steering Mal‐Power Steering Mal‐
function See Opera‐function See Opera‐
tor's Manualtor's Manual
The power steering is malfunctioning.
A warning tone also sounds.
G
WARNING
You will need to use more force to steer.
There is a risk of an accident.
X
Check whether you are able to apply the extra force required.
If you are able to steer safely:
X
Drive on carefully.
X
Visit a qualified specialist workshop immediately.
If you are unable to steer safely:
X
Do not drive on.
X
Consult a qualified specialist workshop.
Phone No ServicePhone No Service
Your vehicle is outside the network provider's transmitter/receiver
range.
X
Wait until the mobile phone operational readiness symbol appears
in the multifunction display.
¥
Check Washer FluidCheck Washer Fluid
The washer fluid level in the washer fluid reservoir has dropped below
the minimum.
X
Add washer fluid (Y page 232).
Wiper Malfunction‐Wiper Malfunction‐
inging
The windshield wipers are malfunctioning.
X
Visit a qualified specialist workshop.
Hazard WarningHazard Warning
Flashers Malfunc‐Flashers Malfunc‐
tioningtioning
The hazard warning lamps are faulty.
X
Visit a qualified specialist workshop.
î
Charger Cable Con‐Charger Cable Con‐
nectednected
The charging cable is still connected to the vehicle socket.
X
Remove the charging cable from vehicle socket.
188
Display messages
On-board computer and displays
SmartKey
Display messages
Possible causes/consequences and MM Solutions
Â
KeyKey DoesDoes NotNot BelongBelong
to Vehicleto Vehicle
You have put the wrong SmartKey in the ignition lock.
X
Use the correct SmartKey.
Â
Take Your Key fromTake Your Key from
IgnitionIgnition
The SmartKey is in the ignition lock.
A warning tone sounds
X
Remove the SmartKey.
Â
Obtain a New KeyObtain a New Key
The SmartKey needs to be replaced.
X
Visit a qualified specialist workshop.
Â
Replace Key BatteryReplace Key Battery
The SmartKey battery is discharged.
X
Change the battery (Y page 69).
Â
Don't Forget YourDon't Forget Your
KeyKey
The display message is shown for a maximum of 60 seconds and is
only a reminder.
You open the driver's door with the drive system switched off. The
SmartKey is not in the ignition lock. A warning tone sounds.
X
Take the SmartKey with you when you leave the vehicle.
Â
Key Not DetectedKey Not Detected
(red display message)
The SmartKey is not in the vehicle.
A warning tone also sounds.
If the drive system is switched off, you can no longer lock the vehicle
centrally or start the drive system.
X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X
Secure the vehicle against rolling away (Y page 128).
X
Locate the SmartKey.
There is interference from a strong source of radio waves, and as a
result the SmartKey is not detected while the drive system is running.
A warning tone also sounds.
X
Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X
Secure the vehicle against rolling away (Y page 128).
X
Insert the SmartKey into the ignition lock and drive in SmartKey
mode.
Display messages
189
On-board computer and displays
Z

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