Get Breakdown assistance Guide for Mercedes C Class 4 Door Fourth Generation (2014-2021)

386 Breakdown assistance

R

the maximum permissible number of washes

is exceeded

the fluorescence has faded

Emergency

Removing the safety vest

The safety vests are located in the stowage com‐

partments in the driver and front passenger

door.

Warning triangle

Removing the warning triangle

#

To remove: pull out the safety vest bag by

the loop.

#

Open the safety vest bag and pull out the

safety vest.

1

2

3

4

5

6

7

Maximum number of washes

Maximum wash temperature

Do not bleach

Do not iron

Do not tumble dry

Do not dry clean

% There are also safety vest compartments in

the rear door stowage compartments in

which safety vests can be stored.

Class 2 safety vest

The requirements defined by the legal standard

are only fulfilled if the safety vest is the correct

size and is fully closed.

Replace the safety vest in the following cases:

R

the reflective strips are damaged or dirty

Breakdown assistance 387

Removing the fire extinguisher

#

First-aid kit (soft-sided) overview

Push both sides of warning triangle holder

1 in the direction of the arrow and open it.

&

WARNING Risk of accident due to an

incorrectly secured fire extinguisher in

the driver's footwell

Remove warning triangle 2.

Setting up the warning triangle

A fire extinguisher may impede pedal travel

or block a depressed pedal.

This jeopardises the operating and road

safety of the vehicle.

The fire extinguisher can be flung around and

injure the driver or other vehicle occupants.

#

Always store and secure the fire extin‐

guisher in the bracket.

#

Do not remove the fire extinguisher

while driving.

#

Fold side reflectors 1 upwards to form a tri‐

angle and attach at the top using upper

First-aid kit (soft sided) 1 is in the boot in the

left-hand or right-hand stowage net, depending

on the model.

press-stud 2.

#

Fold legs 3 down and out to the side.

388 Breakdown assistance

In the event of a flat tyre, the following options

are available depending on your vehicle's equip‐

ment:

Flat tyre

Notes on flat tyres

R

Vehicles with MOExtended tyres: it is pos‐

&

WARNING Risk of accident due to a flat

tyre

sible to continue the journey for a short

period of time. Make sure you observe the

notes on MOExtended tyres (run-flat tyres)

(/ page 389).

A flat tyre severely affects the driving charac‐

teristics as well as the steering and braking

of the vehicle.

Tyres without run-flat characteristics:

#

R

Vehicles with a TIREFIT kit: you can repair

the tyre so that it is possible to continue the

journey for a short period of time. To do this,

use the TIREFIT kit (/ page 390).

#

Left-hand drive vehicle: pull tab 1

Do not drive with a flat tyre.

Change the flat tyre immediately with

an emergency spare wheel or spare

wheel. Alternatively, consult a qualified

specialist workshop.

upwards.

#

Right-hand drive vehicle: pull tab 1 down‐

R

Vehicles with Mercedes me connect: you

wards.

can make a call for breakdown assistance via

the overhead control panel in the case of a

breakdown (/ page 330).

All vehicles: change the wheel

(/ page 418).

#

Remove fire extinguisher 2.

Tyres with run-flat characteristics:

#

R

Observe the information and warning

notes on MOExtended tyres (run-flat

tyres).

Breakdown assistance 389

Notes on MOExtended tyres (run-flat tyres)

Driving distance possible in emergency

mode after the pressure loss warning:

ist workshop with regard to their further

use.

The defective tyre must be replaced in

every case.

&

WARNING Risk of accident when driving

in limp-home mode

Load condition

Driving distance pos‐

sible in emergency

mode

#

Driving in emergency mode impairs the han‐

dling characteristics of the vehicle.

With MOExtended tyres (run-flat tyres), you can

continue to drive your vehicle even if there is a

total loss of pressure in one or more tyres. How‐

ever, the tyre affected must not show any clearly

visible damage.

You can recognise MOExtended tyres by the

MOExtended marking which appears on the side

wall of the tyre.

Vehicles with tyre pressure monitoring sys‐

tem: MOExtended tyres may only be used in

conjunction with an activated tyre pressure mon‐

itoring system.

If a pressure loss warning message appears in

the multifunction display, proceed as follows:

Partially laden

Fully laden

80 km

30 km

#

Do not exceed the permissible maxi‐

mum speed of the MOExtended tyres.

#

Avoid any abrupt steering and driving

The driving distance possible in emergency

mode may vary depending on the driving style.

Observe the maximum permissible speed of

80 km/h.

If a tyre has gone flat and cannot be replaced

with an MOExtended tyre, you can use a stand‐

ard tyre as a temporary measure.

manoeuvres as well as driving over

obstacles (kerbs, pot holes, off-road).

This applies, in particular, to a loaded

vehicle.

#

Stop driving in the emergency mode if

you notice:

R

banging noise

R

vehicle vibration

TIREFIT kit storage location

R

smoke which smells like rubber

Plug-in hybrid: be sure to observe the notes in

the Supplement. You could otherwise fail to rec‐

ognise dangers.

continuous ESP^®intervention

R

Check the tyre for damage.

If driving on, observe the following notes.

R

cracks in the tyre sidewalls

R

#

After driving in emergency mode, have

the rims checked by a qualified special‐

390 Breakdown assistance

Mercedes-AMG vehicles: observe the notes in

the Supplement. You could otherwise fail to rec‐

ognise dangers.

You can find information on the power cate‐

gory (LK) and/or electrical data on the back

of the tyre inflation compressor.

The tyre inflation compressor is mainte‐

nance-free. If there is a malfunction, please

contact a qualified specialist workshop.

&

WARNING Risk of accident when using

tyre sealant

The tyre sealant may be unable to seal the

tyre properly, especially in the following

cases:

The TIREFIT kit is located under the boot floor.

R

there are cuts or punctures in the tyre

larger than damage previously men‐

tioned.

the wheel rim is damaged.

you have driven at very low tyre pres‐

sures or on a flat tyre.

Using the TIREFIT kit

Requirements:

R

Tyre sealant bottle

R

TIREFIT sticker

R

Tyre inflation compressor

Gloves (depending on the vehicle equipment)

#

Do not drive on.

Consult a qualified specialist workshop.

R

#

1

2

Tyre sealant bottle

Tyre inflation compressor

TIREFIT kit storage location: (/ page 389)

&

WARNING Risk of injury and poisoning

from tyre sealant

You can use TIREFIT tyre sealant to seal perfora‐

tion damage of up to 4 mm, particularly those in

the tyre contact surface. You can use TIREFIT in

outside temperatures down to -20 °C.

% Depending on the power category (LK), the

tyre inflation compressor weighs as follows:

Tyre sealant is hazardous to health and cau‐

ses irritation. Do not allow it to come into

contact with your skin, eyes or clothing, and

do not swallow it. Do not inhale any vapours.

Keep the tyre sealant away from children.

R

LK1 – 12 V/10 A, 120 W, 0.8 kg

R

LK2 – 12 V/15 A, 180 W, 0.9 kg

Breakdown assistance 391

Comply with the manufacturer's safety notes on

the sticker on the tyre inflation compressor.

Observe the following if you come into con‐

tact with the tyre sealant:

Have the tyre sealant bottle replaced in a quali‐

fied specialist workshop every five years.

#

Rinse off the tyre sealant from your skin

using water immediately.

#

Do not remove any foreign objects which

#

If tyre sealant gets into your eyes, thor‐

oughly rinse them using clean water

immediately.

have entered the tyre.

#

If tyre sealant has been swallowed,

thoroughly rinse out your mouth imme‐

diately and drink plenty of water. Do not

induce vomiting and seek medical

attention immediately.

#

Change out of clothing which has come

into contact with tyre sealant immedi‐

ately.

If an allergic reaction occurs, seek med‐

ical attention immediately.

#

Pull plug 4 with the cable and hose 5 out

#

of the tyre inflation compressor housing.

#

Affix part 1 of the TIREFIT sticker to the

instrument cluster within the driver's field of

vision.

Affix part 2 of the TIREFIT sticker near the

valve on the wheel with the defective tyre.

Push the plug of hose 5 into flange 6 of

tyre sealant bottle 1 until the plug engages.

NOTE Overheating due to the tyre infla‐

tion compressor running too long

*

Place tyre sealant bottle 1 head downwards

into recess 2 of the tyre inflation compres‐

sor.

#

Do not run the tyre inflation compres‐

sor for longer than ten minutes without

interruption.

392 Breakdown assistance

#

Do not switch off the tyre inflation compres‐

sor during this phase!

Very slowly drive forwards or reverse approx‐

imately 10 m.

Pump up the tyre again.

#

Let the tyre inflation compressor run for a

maximum of ten minutes.

The tyre should then have attained a tyre

pressure of at least 200 kPa (2.0 bar/

29 psi).

After a maximum of ten minutes the tyre

pressure must be at least 200 kPa (2.0 bar/

29 psi).

&

WARNING Risk of accident due to the

specified tyre pressure not being

attained

If tyre sealant leaks out, make sure you clean the

affected area as quickly as possible. It is prefera‐

ble to use clean water.

If you get tyre sealant on your clothing, have it

cleaned as soon as possible with perchloroethy‐

lene.

#

Remove the cap from valve 7 on the faulty

tyre.

If the minimum tyre pressure is not reached

after the specified time, the tyre is too badly

damaged. The tyre sealant cannot repair the

tyre in this instance.

#

Screw filling hose 8 onto valve 7.

#

Insert plug 4 into a 12 V socket in your

vehicle.

If, after ten minutes, a tyre pressure of

200 kPa (2.0 bar/29 psi) has not been

attained:

The braking and driving characteristics may

be greatly impaired.

#

Switch on the ignition.

Press on and off switch 3 on the tyre infla‐

tion compressor.

The tyre inflation compressor is switched on.

The tyre is inflated. First, tyre sealant is pum‐

ped into the tyre. The pressure may briefly

rise to approximately 500 kPa (5 bar/73 psi).

#

Do not continue driving.

#

Switch off the tyre inflation compressor.

#

Consult a qualified specialist workshop.

#

Unscrew the filling hose from the valve of the

defective tyre.

Please note that tyre sealant may leak out when

unscrewing the filling hose.

Breakdown assistance 393

If, after ten minutes, a tyre pressure of

#

Therefore, place the filling hose in the

plastic bag that contained the TIREFIT

kit.

&

WARNING Risk of accident due to the

specified tyre pressure not being

attained

200 kPa (2.0 bar/29 psi) has been attained:

&

WARNING Risk of accident from driving

with sealed tyres

If the specified tyre pressure is not reached,

the tyre is too badly damaged. The tyre seal‐

ant cannot repair the tyre in this instance.

The braking and driving characteristics may

be greatly impaired.

ENVIRONMENTAL NOTE Environmental

pollution caused by environmentally irre‐

sponsible disposal

+

A tyre temporarily sealed with tyre sealant

impairs the handling characteristics and is

not suitable for higher speeds.

Tyre sealant contains pollutants.

#

Adapt your driving style accordingly and

drive carefully.

#

Do not continue driving.

Consult a qualified specialist workshop.

Have the tyre sealant bottle disposed of

professionally, e.g. at a Mercedes-Benz

Service Centre.

#

Do not exceed the maximum speed

limit with a tyre that has been repaired

using tyre sealant.

Countries that have Mercedes-Benz

Service24h: you will find a sticker with the tele‐

phone number, e.g. on the B‑pillar on the driver's

side.

#

Switch off the tyre inflation compressor.

#

Unscrew the filling hose from the valve of the

defective tyre.

#

Observe the maximum permissible speed for

a tyre sealed with tyre sealant 80 km/h.

#

Correct the tyre pressure if it is still at least

Stow the tyre sealant bottle, the tyre inflation

compressor and the warning triangle.

#

Affix the upper section of the TIREFIT sticker

to the instrument cluster in a location where

it will be easily seen by the driver.

130 kPa (1.3 bar/19 psi). See the tyre pres‐

sure table on the fuel filler flap for values.

#

Pull away immediately.

#

To increase the tyre pressure: switch on

Stop driving after approximately ten minutes

and check the tyre pressure using the tyre

inflation compressor.

the tyre inflation compressor.

NOTE Staining from leaking tyre sealant

*

After use, excess tyre sealant may leak out

from the filling hose.

The tyre pressure must now be at least

130 kPa (1.3 bar/19 psi).

394 Breakdown assistance

Battery (vehicle)

Notes on the 12 V battery

&

WARNING Risk of an accident due to

work carried out incorrectly on the bat‐

tery

Work carried out incorrectly on the battery

can, for example, lead to a short circuit. This

can restrict functions relevant for safety sys‐

tems and impair the operating safety of your

vehicle.

You could lose control of the vehicle in the

following situations in particular:

#

To reduce the tyre pressure: press pres‐

sure release button 1 next to manometer

2.

Pull the tyre sealant bottle out of the tyre

inflation compressor. Press the locking tabs

on the yellow cap together to do this.

The filling hose stays on the tyre sealant bot‐

tle.

Drive to the nearest qualified specialist work‐

shop and have the tyre, tyre sealant bottle

and filling hose replaced there.

#

When the tyre pressure is correct, unscrew

the filling hose from the valve of the sealed

tyre.

Screw the valve cap onto the valve of the

sealed tyre.

R

when braking

R

in the event of abrupt steering manoeu‐

#

vres and/or when the vehicle's speed is

not adapted to the road conditions

#

In the event of a short circuit or a simi‐

lar incident, contact a qualified special‐

ist workshop immediately.

#

Do not drive on.

Breakdown assistance 395

All vehicles

The highly flammable gas mixture is created

while the battery is charging and during starting

assistance.

#

Always have work on the battery carried

out at a qualified specialist workshop.

ENVIRONMENTAL NOTE Environmental

damage due to improper disposal of bat‐

teries

+

R

Further information on ABS (/ page 185)

Further information on ESP^®(/ page 186)

&

WARNING Danger of chemical burns

from the battery acid

For safety reasons, Mercedes-Benz recommends

that you only use batteries which have been tes‐

ted and approved for your vehicle by Mercedes-

Benz.

Battery acid is caustic.

#

Avoid contact with the skin, eyes or

clothing.

Batteries contain pollutants. It is

illegal to dispose of them with the household

rubbish.

#

Do not lean over the battery.

All vehicles except vehicles with a lithium-

ion battery

#

Do not inhale battery gases.

#

Keep children away from the battery.

&

WARNING Risk of explosion due to elec‐

trostatic charge

#

Immediately rinse battery acid off thor‐

oughly with plenty of clean water and

seek medical attention immediately.

Dispose of batteries in an

environmentally responsible manner.

Take discharged batteries to a qualified

specialist workshop or to a collection

point for used batteries.

Electrostatic charge can ignite the highly

explosive gas mixture in the battery.

#

To discharge any electrostatic charge

that may have built up, touch the metal

vehicle body before handling the bat‐

tery.

If you have to disconnect the 12 V battery, con‐

tact a qualified specialist workshop.

Comply with safety notes and take protective

measures when handling batteries.

396 Breakdown assistance

Risk of explosion.

Observe this Owner's Manual.

NOTE Damage to the battery from over‐

voltage

*

When charging using a battery charger with‐

out a restriction of the maximum charging

voltage, the battery or the on-board electron‐

ics can be damaged.

Fire, naked flames and smoking are

prohibited when handling the battery.

Avoid creating sparks.

Observe the following if you do not intend to use

the vehicle over an extended period of time:

R

Activate standby mode.

#

Only use battery chargers with a maxi‐

mum charging voltage of 14.8 V.

R

Alternatively: connect the battery to a bat‐

Electrolyte or battery acid is corro‐

sive. Avoid contact with the skin, eyes

or clothing. Wear suitable protective

clothing, in particular gloves, an

apron and a face mask. Immediately

rinse electrolyte or acid splashes off

with clean water. Consult a doctor if

necessary.

tery charger approved by Mercedes-Benz or

consult a qualified specialist workshop to

disconnect the battery.

All other vehicles

When charging the battery and during starting

assistance, always use the jump-start connec‐

tion point in the engine compartment.

Notes on starting assistance and charging

the 12 V battery

NOTE Damage to the battery from over‐

voltage

*

Vehicles with a lithium-ion battery

Wear safety glasses.

When charging the battery and during starting

assistance, always use the jump-start connec‐

tion point in the engine compartment.

When charging using a battery charger with‐

out a restriction of the maximum charging

voltage, the battery or the on-board electron‐

ics can be damaged.

Keep children away.

#

Only use battery chargers with a maxi‐

mum charging voltage of 14.8 V.

Breakdown assistance 397

If the indicator/warning lamps in the instrument

cluster do not light up at low temperatures, it is

very likely that the discharged battery has fro‐

zen. In this case you may neither jump-start the

vehicle nor charge the battery.

The service life of a battery that has been

thawed may be dramatically shortened. The

starting characteristics may be impaired, espe‐

cially at low temperatures.

It is recommended that you have a thawed bat‐

tery checked at a qualified specialist workshop.

Plug-in hybrid: be sure to observe the notes in

the Supplement. You could otherwise fail to rec‐

ognise dangers.

&

WARNING Risk of explosion from hydro‐

gen gas igniting

WARNING Risk of explosion during

charging process and starting assistance

There is a danger of hydrogen gas igniting

when charging the battery if there is a short

circuit or sparks start to form.

During the charging process and starting

assistance, the battery may release an explo‐

sive gas mixture.

#

Make sure that the positive terminal of

the connected battery does not come

into contact with vehicle parts.

Never place metal objects or tools on a

battery.

The described order of the battery

clamps must be observed when con‐

necting and disconnecting the battery.

When giving starting assistance, always

make sure that you only connect bat‐

tery terminals with identical polarity.

Avoid fire, naked flames, creating

sparks and smoking.

Make sure there is sufficient ventila‐

tion.

#

Do not lean over a battery.

#

&

WARNING Risk of explosion from a fro‐

zen battery

#

All vehicles

A discharged battery may freeze at tempera‐

tures slightly above or below freezing point.

During starting assistance or battery charg‐

ing, battery gas can be released.

NOTE Damage caused by numerous or

extended attempts to start the engine

*

#

During starting assistance, you must

observe the described order for con‐

necting and disconnecting the jump

lead.

Numerous or extended attempts to start the

engine may damage the catalytic converter

due to non-combusted fuel.

#

Always allow a battery to thaw before

charging it or performing starting assis‐

tance.

#

Do not connect or disconnect the bat‐

tery clamps while the engine is running.

#

Avoid numerous and extended attempts

to start the engine.

398 Breakdown assistance

Observe the following points during starting

assistance and when charging the battery:

Observe the additional following points during

starting assistance:

R

Only use undamaged jump lead/charging

Starting assistance may only be provided

cables with a sufficient cross-section and

insulated terminal clamps.

using vehicles, batteries or other jump start

devices with a nominal voltage of 12 V.

R

Non-insulated parts of the terminal clamps

The vehicles must not touch.

must not come into contact with other metal

parts while the jump lead/charging cable is

connected to the battery/jump-start connec‐

tion point.

The jump lead/charging cable must not

come into contact with any parts which may

move when the engine is running.

R

Vehicles with a petrol engine: jump-start

the vehicle only when the engine and exhaust

system are cold.

#

Fold cover 1 up in the direction of the

arrow.

R

Starting assistance and charging the 12 V

battery

Requirements:

R

Always make sure that neither you nor the

battery is electrostatically charged.

R

The vehicle is secured with the electric park‐

ing brake.

Automatic transmission: the transmission

is in position j.

Manual transmission: the transmission is in

neutral.

The ignition and all electrical consumers are

switched off.

The bonnet is open.

R

Keep away from fire and naked flames.

Do not lean over the battery.

R

Observe the additional following points when

charging the battery:

R

Only use battery chargers tested and

approved for Mercedes-Benz.

Read the battery charger's operating instruc‐

tions before charging the battery.

R

Breakdown assistance 399

#

During starting assistance: start the

engine of the donor vehicle and run at idle

speed.

Connect the negative pole of the donor bat‐

tery and earth point 4 of your own vehicle

by using the jump lead/charging cable. Begin

with the donor battery first.

During starting assistance: start the

engine of your own vehicle.

During the charging process: start the

charging process.

During starting assistance: let the engines

run for several minutes.

During starting assistance: before discon‐

necting the jump lead, switch on an electrical

consumer in your own vehicle, e.g. the rear

window heater or lighting.

each time with the contacts on your own

vehicle first.

After removing the jump lead/charging

cable, close cover 2 of positive clamp 3.

#

Close cover 1.

Further information can be obtained at a quali‐

fied specialist workshop.

#

Replacing the 12 V battery

#

Observe the notes on the 12 V battery

(/ page 394).

Mercedes-Benz recommends that you have the

12 V battery replaced at a qualified specialist

workshop, e.g. at a Mercedes-Benz Service

Centre.

Observe the following notes if you want to

replace the battery yourself:

#

Slide cover 2 of positive clamp 3 on the

jump-starting connection point in the direc‐

tion of the arrow.

Connect positive clamp 3 on your vehicle to

the positive pole of the donor battery using

the jump lead/charging cable. Always begin

with positive clamp 3 on your own vehicle

first.

When the starting assistance/charging process

is complete:

R

Always replace a faulty battery with a battery

which meets the specific vehicle require‐

ments.

The vehicle is equipped with an AGM technol‐

ogy battery (Absorbent Glass Mat) or a lith‐

#

First, remove the jump lead/charging cable

from earth point 4 and negative pole of the

donor battery, then from positive clamp 3

and positive pole of the donor battery. Begin

400 Breakdown assistance

ium-ion battery. Full vehicle functionality is

only guaranteed with an AGM battery or lith‐

ium-ion battery. For safety reasons,

Mercedes-Benz recommends transporting your

vehicle in the case of a breakdown, rather than

towing it away.

Tow-starting or towing away

Permitted towing methods

Mercedes-Benz recommends that you only

use batteries which have been tested and

approved for your vehicle by Mercedes-Benz.

Carry over detachable parts, such as vent

hoses, elbow fittings or terminal covers from

the battery being replaced.

Make sure that the vent hose is always con‐

nected to the original opening on the side of

the battery.

Fit any existing or supplied cell caps.

Otherwise, gases or battery acid could

escape.

Plug-in hybrid: be sure to observe the notes in

the Supplement. You could otherwise fail to rec‐

ognise dangers.

For towing, use a tow rope or tow bar with both

axles on the ground. Do not use tow bar sys‐

tems.

R

NOTE Damage from automatic braking

*

NOTE Damage to the vehicle due to tow‐

ing away incorrectly

*

If one of the following functions is switched

on, the vehicle brakes automatically in cer‐

tain situations:

R

#

Observe the instructions and notes on

towing away.

R

Active Brake Assist

Vehicles with manual transmission

R

Active Distance Assist DISTRONIC

R

HOLD function

Both axles on Yes, max. 50 km at 50 km/h

the ground

R

Active Parking Assist

R

Make sure that detachable parts are recon‐

nected in the same way.

To avoid damage to the vehicle, deactivate

these systems in the following or similar sit‐

uations:

Front axle

raised

Yes, max. 50 km at 50 km/h

Rear axle

raised

Yes, max. 50 km at 50 km/h

#

During towing

#

In a car wash

Breakdown assistance 401

Towing the vehicle with both axles on the

ground

NOTE Damage due to towing away at

excessively high speeds or over long dis‐

tances

Vehicles with automatic transmission

*

Both axles on Yes, max. 50 km at 50 km/h

the ground

#

Observe the notes on the permitted towing

methods (/ page 400).

The drivetrain could be damaged when tow‐

ing at excessively high speeds or over long

distances.

#

Front axle

raised

No

Make sure that the battery is connected and

charged.

#

A towing speed of 50 km/h must not

Observe the following points when the battery is

discharged:

Rear axle

raised

Yes, if the steering wheel is

fixed in the centre position

with a steering wheel lock

be exceeded.

#

A towing distance of 50 km must not be

exceeded.

R

the engine cannot be started

R

the electric parking brake cannot be released

or applied

4MATIC vehicles

&

WARNING Risk of accident when towing

a vehicle which is too heavy

R

vehicles with automatic transmission: the

Both axles on Yes, max. 50 km at 50 km/h

the ground

automatic transmission cannot be shifted to

position i or j

If another vehicle is tow-started or towed

away, its weight must not exceed the permis‐

sible gross mass of your own vehicle, other‐

wise the following could occur:

Front axle

raised

No

% Vehicles with automatic transmission: if

the automatic transmission cannot be shif‐

ted to position i, or the multifunction dis‐

play in the instrument cluster does not show

anything, have the vehicle transported away

(/ page 403). A towing vehicle with lifting

equipment is required for vehicle transporta‐

tion.

Rear axle

raised

No

R

the towing eye may become detached.

the vehicle/trailer combination may

swerve or even overturn.

R

Towing with a raised axle: towing should be

performed by a towing company.

#

If another vehicle is tow-started or

towed away, its weight must not exceed

402 Breakdown assistance

#

Do not activate the HOLD function.

Deactivate tow-away protection

(/ page 93).

Deactivate Active Brake Assist

(/ page 193).

Vehicles with automatic transmission:

shift the automatic transmission to position

i.

Vehicles with manual transmission: shift

to neutral i.

R

the permissible gross mass of your own

vehicle.

the brake system or power steering sys‐

tem is malfunctioning.

the energy supply or the on-board electri‐

cal system is malfunctioning.

If a vehicle must be tow-started or towed away,

its permissible gross weight must not exceed the

permissible gross weight of the towing vehicle.

#

When your vehicle is then towed away, signif‐

icantly more effort may be required to steer

and brake than is normally required.

#

Information on the permissible gross mass of

the vehicle can be found on the vehicle iden‐

tification plate (/ page 427).

Vehicles with automatic transmission: do

not open the driver's door or front passenger

door, otherwise the automatic transmission

automatically shifts to position j.

#

Use a tow bar.

Make sure that the steering wheel can

move freely before towing the vehicle

away.

#

Release the electric parking brake.

Vehicles with manual transmission:

switch on the ignition, otherwise the steering

wheel locking may engage.

#

Fit the towing eye (/ page 404).

Fasten the tow bar.

NOTE Damage due to excessive tractive

power

*

If you pull away sharply, the tractive power

may be too high and the vehicles could be

damaged.

&

WARNING Risk of accident due to limi‐

ted safety-related functions during the

towing process

NOTE Damage due to incorrect connec‐

tion of the tow bar

*

#

Only connect the tow rope or tow bar to

the towing eyes.

#

Pull away slowly and smoothly.

Safety-related functions are limited or no lon‐

ger available in the following situations:

R

the ignition is switched off.

#

Deactivate the automatic locking mechanism

(/ page 76).

Breakdown assistance 403

#

Loading the vehicle for transport

Vehicles with manual transmission:

engage first or reverse gear.

Use the electric parking brake to secure the

vehicle against rolling away.

Only secure the vehicle by the wheels.

R

the maximum permissible speed of

60 km/h is not exceeded when

transporting

#

Observe the notes on towing away

(/ page 401).

#

Connect the tow bar to the towing eye in

order to load the vehicle.

NOTE Damage to the vehicle from secur‐

ing it incorrectly

*

Vehicles with ADS PLUS (Adaptive Damping

System PLUS)

% You can also attach the tow bar to the trailer

#

After loading, the vehicle must be

secured on all four wheels. Otherwise,

the vehicle could be damaged.

A minimum distance of 20 cm upwards

and 10 cm downwards must be kept to

the transport platform.

hitch.

#

Vehicles with automatic transmission:

&

WARNING Risk of an accident when

transporting vehicles with Adaptive

Damping System PLUS

shift the automatic transmission to position

i.

#

Vehicles with automatic transmission:

the automatic transmission may be locked in

position j in the event of damage to the

electrical system. To shift to i, provide the

on-board electrical system with power

(/ page 398).

%

When transporting vehicles with Adaptive

Damping System PLUS, the vehicle/trailer

combination may begin to rock and start to

skid.

#

Secure the vehicle on all four wheels after

loading.

#

When transporting, ensure that:

R

the vehicle has been loaded onto

the transporter correctly

#

Vehicles with manual transmission: shift

to neutral.

R

the vehicle is secured at all four

#

Load the vehicle onto the transporter.

wheels with suitable tensioning

straps

Vehicles with automatic transmission:

shift the automatic transmission to position

j.

404 Breakdown assistance

#

4MATIC vehicles/vehicles with automatic

transmission

Towing eye storage location

Screw in the towing eye clockwise as far as it

will go and tighten.

The towing eye is located in the stowage space

under the boot floor.

Vehicles with a trailer hitch: vehicles with a

trailer hitch do not have a rear bracket for the

towing eye. Fasten the tow bar to the trailer

hitch.

Installing the towing eye

% Make sure that cover 1 engages in the

bumper when you remove the towing eye.

NOTE Damage to the vehicle due to

incorrect use of the towing eye

*

When a towing eye is used to recover a vehi‐

cle, the vehicle may be damaged in the proc‐

ess.

#

Make sure that the front and rear axles come

to rest on the same transportation vehicle.

#

Only use the towing eye to tow away or

tow start the vehicle.

NOTE Damage to the drivetrain due to

incorrect positioning

*

#

Do not position the vehicle above the

connection point of the transport vehi‐

cle.

#

Press the mark on cover 1 inwards and

remove.

Breakdown assistance 405

#

Tow starting the vehicle (emergency engine

start)

Tow-start the vehicle while the clutch pedal

is fully depressed.

Slowly release the clutch pedal.

Immediately shift to neutral if the engine

starts.

Pull over and stop the vehicle, paying atten‐

tion to road and traffic conditions.

Remove the tow bar.

Remove the towing eye.

Have the vehicle checked at a qualified spe‐

cialist workshop.

#

Always replace faulty fuses with speci‐

fied new fuses containing the correct

amperage.

#

Vehicles with automatic transmission

NOTE Damage to the automatic trans‐

mission due to tow-starting

NOTE Damage due to incorrect fuses

*

#

Electrical components or systems may be

damaged by incorrect fuses, or their func‐

tionality may be significantly impaired.

The automatic transmission may be damaged

in the process of tow-starting vehicles with

automatic transmission.

#

Only use fuses that have been approved

by Mercedes-Benz and which have the

correct fuse rating.

#

Vehicles with automatic transmission

must not be tow-started.

#

Vehicles with automatic transmission must

not be tow-started.

Blown fuses must be replaced with fuses of the

same rating, which you can recognise by the col‐

our and fuse rating. The fuse ratings and further

information to be observed can be found in the

fuse assignment diagram.

Fuse assignment diagram: on the fuse box in

the boot (/ page 407).

Electrical fuses

Notes on electrical fuses

Vehicles with manual transmission

#

Observe the notes on towing away

(/ page 401).

If necessary, allow the engine and exhaust

system to cool down.

Switch the ignition on.

Engage second gear.

&

WARNING Risk of accident and injury

due to overloaded lines

#

If you manipulate or bridge a faulty fuse or if

you replace it with a fuse with a higher

amperage, the electric line could be overloa‐

ded.

#

Release the electric parking brake.

This could result in a fire.

406 Breakdown assistance

R

Fuse box on the driver's side of the cockpit

#

Always switch off the windscreen wip‐

ers and ignition before opening the

engine bonnet.

NOTE Damage or malfunctions caused

by moisture

*

(/ page 407)

Fuse box in the front passenger footwell

(/ page 407)

Fuse box in the boot on the right-hand side

of the vehicle, when viewed in the direction

of travel (/ page 407)

Moisture may cause damage to the electrical

system or cause it to malfunction.

#

When the fuse box is open, make sure

that no moisture can enter the fuse

box.

#

When closing the fuse box, make sure

that the seal of the lid is positioned cor‐

rectly on the fuse box.

Opening and closing the fuse box in the

engine compartment

Requirements:

If the newly inserted fuse also blows, have the

cause traced and rectified at a qualified special‐

ist workshop.

R

A dry cloth and a screwdriver are available.

Observe the notes on electrical fuses

(/ page 405).

Ensure the following before replacing a fuse:

R

Opening

The vehicle is secured against rolling away.

All electrical consumers are switched off.

The ignition is switched off.

&

WARNING Risk of injury from using the

windscreen wipers while the engine bon‐

net is open

#

Turn clip 2 on cover 1 a quarter-turn to

The electrical fuses are located in various fuse

boxes:

the left.

When the engine bonnet is open, and the

windscreen wipers are set in motion, you can

be trapped by the wiper linkage.

Fold cover 1 up in the direction of the

arrow.

R

Fuse box in the engine compartment on the

driver's side (/ page 406)

Breakdown assistance 407

#

Insert lid 4 into the bracket at the rear of

the fuse box.

Fold down lid 4 of the fuse box and tighten

screws 3.

#

Fold down cover 1.

Turn clip 2 on cover 1 a quarter-turn to

the right.

#

Close the bonnet.

Opening and closing the fuse box in the

cockpit

The fuse box is on the side of the dashboard

under a cover.

#

Contact a Mercedes-Benz Service Centre for

#

Remove any existing moisture from the fuse

box using a dry cloth.

Loosen screws 3 and remove fuse box lid

4 from the top.

Open cover 1 in the direction of the arrow

further information.

and remove it.

Opening and closing the fuse box in the front

passenger footwell

Opening and closing the fuse box in the boot

Closing

#

Observe the notes on electrical fuses

(/ page 405).

Observe the notes on electrical fuses

(/ page 405).

Check whether the seal is positioned cor‐

rectly in lid 4.

408 Breakdown assistance

#

Fold cover 1 up in the direction of the

arrow.

The fuse assignment diagram is in a recess on

the side of the fuse box.

Breakdown assistance for Your Mercedes C Class 4 Door Fourth Generation (2014-2021)

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