Get Breakdown assistance Guide for Mercedes G Class SUV Fourth Generation (2019-2024)

Emergency

Removing the safety vest

The safety vests are located in the stowage com-

partments in the driver's and front passenger

door.

Pull out the safety vest bag by the loop.

Open the safety vest bag and pull out the

safety vest.

There are also safety vest compartments in

the rear door stowage compartments in which

safety vests can be stored.

Maximum number of washes

Maximum wash temperature

Do not bleach

Do not iron

Do not tumble dry

Do not dry clean

Class 2 safety vest

The requirements dened by the legal standard

are only fullled if the safety vest is the correct

size and is fully closed.

Replace the safety vest in the following cases:

The reective strips are damaged or dirty

The maximum permissible number of washes

is exceeded

The uorescence has faded, e.g. due to con-

tinuous exposure to sunlight.

Dispose of the safety vest in an environmentally

responsible manner.

To do so, contact your local waste disposal

company.

Warning triangle

▌Removing the warning triangle

Open tabs 2.

Remove warning triangle 1.

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331

▌Setting up the warning triangle

Fold side reectors 1 upwards to form a tri-

angle and attach at the top using upper press-

stud

Fold legs 3 down and out to the side.

First-aid kit (so sided) overview

First-aid kit 1 is located in the stowage compart-

ment in the front-passenger door.

Flat tire

Notes on at tires

WARNING Risk of accident due to a at

tire

A at tire strongly impairs the vehicle's driving

characteristics, as well as its steering and

braking characteristics.

Do not drive with a at tire.

Replace the at tire with the spare

wheel. Alternatively, consult a qualied

specialist workshop.

In the event of a at tire, the following options are

available depending on your vehicle's equipment:

Vehicles with Mercedes me connect: you can

make a call for breakdown assistance via the

overhead control panel in the case of a break-

down (/ page 283).

All vehicles: change the wheel (/ page 369).

The emergency spare wheel is only available

in certain countries.

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Breakdown assistance

Spare wheel bracket on the rear-end door

Stainless-steel spare wheel bracket

Removing a stainless-steel spare wheel bracket

Remove screwdriver 4 from the vehicle tool

kit (/ page 369).

Open the lock on cover ring 1 with screw-

driver

Fold tab 3 down.

Pull cover ring 1 apart and remove it.

Remove cover panel 2.

Removing the spare wheel

Remove wheel nuts 5.

Remove the spare wheel.

Securing the wheel to the spare wheel bracket

Use nuts 5 to secure the faulty wheel to the

spare wheel bracket.

Specied tightening tor-

que: 14.75 lb- (20 Nm)

Position cover panel 2 again. Make sure that

retainer

6 of cover panel 2 engages in

recess

Attach cover ring 1 again and close the lock.

Make sure that the lock does not cover the

reversing camera. If necessary, turn cover

ring

1 slightly.

Vehicles with an emergency spare wheel: observe

the notes on the emergency spare wheel.

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333

Spare wheel bracket with protective tire cover

Removing the protective tire cover

Pull protective tire cover 1 on the rear side

apart and remove it.

Removing the wheel from the spare wheel

bracket and securing a faulty wheel

Remove wheel nuts 2.

Remove the spare wheel.

Use nuts 2 to secure the faulty wheel to the

spare wheel bracket.

Specied tightening tor-

que: 14.75 lb- (20 Nm)

Vehicles with an emergency spare wheel: remov-

ing the half shell

Remove half shell 3.

Remove wheel nuts 2.

Remove the emergency spare wheel.

Remove the rear half shell.

Use nuts 2 to secure the faulty wheel to the

spare wheel bracket.

Specied tightening tor-

que: 14.75 lb- (20 Nm)

Stow the half shells in the load compartment.

Vehicles with an emergency spare wheel: observe

the notes on the emergency spare wheel.

Plastic spare wheel bracket

WARNING Risk of injury when changing a

wheel

The wheels are very heavy. When being

removed, a wheel can tip over or roll away

uncontrollably. As a result, you or other per-

sons could be hit by the wheel.

Have a second person assist you in

removing the wheel.

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Breakdown assistance

NOTE Damage to the vehicle when open-

ing the rear-end door with the spare wheel

bracket open

If you open the rear-end door with the spare

wheel bracket open, the bracket can strike the

vehicle and damage it.

Before opening the rear-end door, close

the spare wheel bracket completely.

Open cover 1 with the triangular socket

wrench from the vehicle tool kit and fold it

open.

Unscrew central nut 2 of the retaining

bracket with the socket wrench (SW 18) from

the vehicle tool kit.

Open the spare wheel bracket 90°.

Loosen wheel nuts (SW 19) 3.

Remove spare wheel 4.

Breakdown assistance

335

Battery (vehicle)

Notes on the 12 V battery

WARNING Risk of explosion due to elec-

trostatic charge

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 battery.

The highly ammable gas mixture is created while

the battery is charging and during starting assis-

tance.

For safety reasons, Mercedes-Benz recommends

that you only use batteries which have been tes-

ted and approved for your vehicle by Mercedes-

Benz.

WARNING Danger of chemical burns from

the battery acid

Battery acid is caustic.

Avoid contact with the skin, eyes or

clothing.

Do not lean over the battery.

Do not inhale battery gases.

Keep children away from the battery.

Immediately rinse battery acid o thor-

oughly with plenty of clean water and

seek medical attention immediately.

ENVIRONMENTAL NOTE Environmental

damage due to improper disposal of bat-

teries

Batteries contain pollutants. It is illegal

to dispose of them with the household rub-

bish.

Dispose of batteries in an

environmentally responsible manner.

Take discharged batteries to a qualied

specialist workshop or to a collection

point for used batteries.

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

tact a qualied specialist workshop.

Comply with safety notes and take protective

measures when handling batteries.

Risk of explosion.

Fire, open ames and smoking are pro-

hibited when handling the battery. Avoid

creating sparks.

Electrolyte or battery acid is corrosive.

Avoid contact with the skin, eyes or cloth-

ing. Wear suitable protective clothing, in

particular gloves, an apron and a face

mask. Immediately rinse electrolyte or

acid splashes o with clean water. Consult

a doctor immediately.

Wear safety glasses.

336

Breakdown assistance

Keep children away.

Observe this Operator's Manual.

If you do not intend to use the vehicle over an

extended period of time:

Activate standby mode.

Connect the battery to a battery charger

approved by Mercedes-Benz.

Consult a qualied specialist workshop to dis-

connect the battery.

Notes on starting assistance and charging the 12

V battery

When charging the battery and during starting

assistance, always use the jump-start connection

point in the engine compartment.

NOTE Damage to the battery due to over-

voltage

When charging using a battery charger without

a maximum charging voltage, the battery or

the on-board electronics may be damaged.

Only use battery chargers with a maxi-

mum charging voltage of 14.8 V.

WARNING Risk of explosion due to the

ignition of hydrogen gas

If there is a short circuit or sparks are created,

there is a danger of hydrogen gas igniting

when you charge the battery.

Make sure that the POSITIVE terminal of

a connected battery does not come into

contact with vehicle parts.

Never place metal objects or tools on a

battery.

When connecting and disconnecting the

battery, always observe the sequence of

battery terminals described.

During starting assistance, always take

care to connect only battery terminals of

identical polarity.

During starting assistance, observe the

sequence described for connecting and

disconnecting the jumper cables.

Do not connect or disconnect the bat-

tery terminals with the engine running.

WARNING Risk of explosion due to a mix-

ture of explosive gases

A mixture of explosive gases can escape from

the battery during charging and jump starting.

Fire, open ames, smoking and creating

sparks must be avoided.

Make sure that there is sucient ventila-

tion.

Do not stand over the battery.

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337

WARNING Risk of explosion from a frozen

battery

A discharged battery may freeze at tempera-

tures slightly above or below freezing point.

During starting assistance or battery charging,

battery gas can be released.

Always allow a battery to thaw before

charging it or performing starting assis-

tance.

If the indicator/warning lamps on the instrument

display do not light up at low temperatures, it is

very likely that the discharged battery has frozen.

In this case you may neither jump-start the vehi-

cle nor charge the battery.

The service life of a battery that has been thawed

may be dramatically shortened. The starting char-

acteristics may be impaired, especially at low

temperatures.

It is recommended that you have a thawed battery

checked at a qualied specialist workshop.

NOTE Damage caused by numerous or

extended attempts to start the engine

Numerous or extended attempts to start the

engine may damage the catalytic converter

due to non-combusted fuel.

Avoid numerous and extended attempts

to start the engine.

Observe the following points during starting assis-

tance and when charging the battery:

Only use undamaged jumper cables/charging

cables with a sucient cross-section and

insulated terminal clamps.

Non-insulated parts of the terminal clamps

must not come into contact with other metal

parts while the jumper cable/charging cable

is connected to the battery/jump-start con-

nection point.

The jumper cable/charging cable must not

come into contact with any parts which may

move when the engine is running.

Always make sure that neither you nor the bat-

tery is electrostatically charged.

Keep away from re and open ames.

Do not lean over the battery.

Observe the additional following points when

charging the battery:

Only use battery chargers tested and

approved for Mercedes-Benz.

Read the battery charger's operating instruc-

tions before charging the battery.

Observe the additional following points during

starting assistance:

For starting assistance, only use batteries with

a nominal voltage of 12 V.

The vehicles must not touch.

Gasoline engine: only accept starting assis-

tance if the engine and exhaust system are

cold.

Starting assistance and charging the 12 V battery

Requirements

The vehicle is secured with the electric park-

ing brake.

338

Breakdown assistance

The transmission is in position j.

The vehicle and all electrical consumers are

switched o.

The hood is open.

Slide cover 1 of positive contact 2 on the

jump-starting connection point in the direction

of the arrow.

Connect positive contact 2 on your vehicle

to the positive terminal of the donor battery

using the jumper cable/charging cable.

Always begin with positive contact

2 on your

own vehicle rst.

During starting assistance: start the engine of

the donor vehicle and run it at idle speed.

Connect the negative terminal of the donor

battery and ground point 3 of your own vehi-

cle using the jumper cable/charging cable.

Begin with the donor battery rst.

During starting assistance: start the engine of

your own vehicle.

During the charging process: start the charg-

ing process.

During starting assistance: let the engines run

for several minutes.

During starting assistance: before disconnect-

ing the jumper cable, switch on an electrical

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

window defroster or lighting.

When the starting assistance/charging process is

complete:

First, remove the jumper cables/charging

cables from ground point 3 and the negative

terminal of the donor battery, then from posi-

tive contact

2 and the positive terminal of

the donor battery. Begin each time with the

contacts on your own vehicle rst.

Aer removing the jumper cables/charging

cables, close cover 1 of positive contact 2.

Further information can be obtained at a qualied

specialist workshop.

Replacing the 12 V battery

Observe the notes on the 12 V battery

(/ page 336).

Mercedes-Benz recommends that you have the

12 V battery replaced at a qualied specialist

workshop, e.g. at an authorized Mercedes-Benz

Center.

Observe the following notes if you want to replace

the battery yourself:

Always replace a faulty battery with a battery

that meets the specic vehicle requirements.

Breakdown assistance

339

The vehicle is equipped with a eece battery.

Full vehicle functionality is only guaranteed

with a eece battery. For safety reasons,

Mercedes-Benz recommends that you only

use batteries which have been tested and

approved for your vehicle by Mercedes-Benz.

Use detachable parts such as the vent hose,

elbow tting or terminal cover from the bat-

tery that is to be replaced.

Make sure that the vent hose is always con-

nected to the original opening on the side of

the battery.

Install any existing or supplied cell caps.

Otherwise, gases or battery acid could

escape.

Make sure that detachable parts are recon-

nected in the same way.

Tow starting or towing away

Permitted towing methods

Mercedes-Benz recommends transporting your

vehicle in the case of a breakdown, rather than

towing it away.

For towing with both axles on the ground, use a

tow rope or tow rod. Do not use tow bar systems.

NOTE Damage to the vehicle due to tow-

ing away incorrectly

Observe the instructions and notes on

towing away.

If you tow the vehicle with raised front or rear

axles, you must remove the propeller sha

between the transfer case and the rolling

axles.

Permitted towing methods

Both axles on the ground Front axle raised Rear axle raised

Yes, for a maximum of 31 miles (50 km) at

31 mph (50 km/h)

Yes Yes

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Breakdown assistance

Towing away the vehicle with both axles on the

ground

Observe the notes on the permitted towing

methods (/ page 340).

Make sure that the battery is connected and

charged.

When the battery is discharged:

the vehicle cannot be started.

the electric parking brake cannot be released

or applied

The transmission cannot be shied to position

i or j

If the transmission cannot be shied to posi-

tion i, transport the vehicle (/ page 343).

A towing vehicle with liing equipment is

required for vehicle transportation.

NOTE Damage due to towing away at

excessively high speeds or over long dis-

tances

The drivetrain could be damaged when towing

at excessively high speeds or over long distan-

ces.

A towing speed of 30 mph (50 km/h)

must not be exceeded.

A towing distance of 30 miles (50 km)

must not be exceeded.

WARNING Risk of accident when towing a

vehicle which is too heavy

If the vehicle to be tow-started or towed away

is heavier than the permissible gross mass of

your vehicle, the following situations can

occur:

The towing eye may become detached.

The vehicle/trailer combination may

swerve or rollover.

Before tow-starting or towing away,

check if the vehicle to be tow-started or

towed away exceeds the permissible

gross mass.

If a vehicle has to be tow-started or towed away,

its permissible gross mass must not exceed the

permissible gross mass of the towing vehicle.

Information on the permissible gross weight of

the vehicle can be found on the vehicle identi-

cation plate (/ page 378).

Do not open the driver's door or front

passenger door. Otherwise the transmission

shis to position j automatically.

Fasten the tow bar to the towing eyes.

NOTE Damage due to incorrect connec-

tion of the tow bar

Only connect the tow rope or tow bar to

the towing eyes.

Do not activate the HOLD function.

Deactivate the tow-away alarm (/ page 78).

Deactivate Active Brake Assist (/ page 175).

Shi the transmission to position i.

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341

Release the electric parking brake.

WARNING Risk of accident due to limited

safety-related functions during the towing

process

Safety-related functions are limited or no lon-

ger available in the following situations:

The vehicle is switched o.

The brake system or power steering sys-

tem is malfunctioning.

The energy supply or the on-board electri-

cal system is malfunctioning.

When your vehicle is towed away, signicantly

more eort may be required to steer and

brake than is normally required.

Use a tow bar.

Make sure that the steering wheel can

move freely before towing the vehicle

away.

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.

Pull away slowly and smoothly.

Notes on recovering a vehicle that is stuck

NOTE Damage as a result of recovering a

vehicle that is stuck

If the tractive power is too high, the vehicles

could be damaged.

Pull the vehicle that is stuck out as

straight and evenly as possible during

recovery.

Observe the following during recovery to avoid

damage to your vehicle:

If the driven wheels get trapped on loose or

muddy ground, recover the vehicle with the

utmost care,

especially so if the vehicle is laden.

Do not recover the stuck vehicle with the

trailer attached.

Pull out the vehicle that is stuck backwards, if

possible, using the tracks it made before it

became stuck.

Towing vehicle away in the event of malfunctions

▌Notes on towing away in the event of malfunc-

tions

NOTE Damage due to incorrect attach-

ment and use of old nuts

The vehicle and components of the vehicle

can be damaged due to incorrect attachment

and use of old nuts.

If you remove the propeller sha, place

the M10 nuts on the M8 bolts as

spacers and secure them with M8 nuts.

Always use new self-locking nuts when

installing the propeller shas.

Observe the notes on towing away (/ page 340).

342

Breakdown assistance

For further information, consult an authorized

Mercedes-Benz Center.

▌Towing away in the event of malfunctions

Towing away in the event of damage to the

engine, transmission or electrics

Shi the transmission to position i.

Towing away in the event of damage to the trans-

fer case

Remove the propeller shas between the axles

and the transfer case.

▌Towing away in the event of front axle damage

Remove the propeller sha between the rear

axle and the transfer case.

Tow away the vehicle with a raised front axle.

▌Towing away in the event of rear axle damage

Remove the propeller sha between the front

axle and the transfer case.

Tow away the vehicle with a raised rear axle

and with wheel rollers under the front axle.

Loading the vehicle for transport

Observe the notes on towing away

(/ page 340).

Connect the towing device to the towing eye

in order to load the vehicle.

Shi the automatic transmission to position

The automatic transmission may be locked in

position j in the event of damage to the

electrics. To shi to i, supply the on-board

electrical system with power (/ page 338).

Load the vehicle onto the transporter.

Shi the automatic transmission to position

Use the electric parking brake to secure the

vehicle against rolling away.

Only secure the vehicle by the wheels.

Make sure that the front and rear axles come

to rest on the same transportation vehicle.

NOTE Damage to the drive train due to

incorrect positioning of the vehicle

Do not position the vehicle above the

connection point of the transport vehi-

cle.

Breakdown assistance

343

Position of towing eyes

Towing eyes 1 are attached to the front and rear

of the vehicle.

Tow-starting the vehicle (vehicle emergency start)

NOTE Damage to the automatic transmis-

sion due to tow starting

The automatic transmission may be damaged

in the process of tow starting vehicles with

automatic transmission.

Vehicles with automatic transmission

must not be tow started.

Do not tow-start the vehicle.

Electrical fuses

Notes on electrical fuses

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 amper-

age, the electric line could be overloaded.

This could result in a re.

Always replace faulty fuses with speci-

ed new fuses containing the correct

amperage.

NOTE Damage due to incorrect fuses

Using incorrect fuses can result in damage to

electrical components or systems or their

functions being considerably restricted.

Use only fuses approved for Mercedes-

Benz with the respective specied fuse

rating.

Blown fuses must be replaced with fuses of the

same rating, which you can recognize by the color

and the label. The fuse ratings and further infor-

mation to be observed can be found in the fuse

assignment diagram.

Fuse assignment diagram: on the fuse box in the

rear passenger compartment (/ page 346).

344

Breakdown assistance

NOTE Damage or malfunctions caused by

moisture

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.

If the newly inserted fuse also blows, have the

cause traced and rectied at a qualied specialist

workshop.

Ensure the following before replacing a fuse:

The vehicle is secured against rolling away.

All electrical consumers are switched o.

The vehicle is switched o.

The electrical fuses are located in various fuse

boxes:

Fuse box in the engine compartment on the

le-hand side (/ page 345)

Fuse box on the right-hand side of the cockpit

(/ page 346)

Fuse box in the rear passenger compartment

(/ page 346)

Opening and closing the fuse box in the engine

compartment

Requirements

A dry cloth and a screwdriver are available.

Observe the notes on electrical fuses

(/ page 344).

Opening

WARNING Risk of injury from using the

windshield wipers when the hood is open

If the windshield wipers start moving when the

hood is open, you could be trapped by the

wiper linkage.

Always switch o the windshield wipers

and vehicle before opening the hood.

Open the hood.

Remove any existing moisture from the fuse

box using a dry cloth.

Loosen screws 1.

Fold out cover 2 in the direction of the arrow

and remove it.

Closing

Check whether the seal is positioned correctly

in the lid.

Breakdown assistance

345

Place tabs 3 of cover 2 in the fuse box.

Ensure that cover 2 sits on the fuse box.

Tighten screws 1.

Close the hood.

Opening and closing the fuse box in the cockpit

Observe the notes on electrical fuses

(/ page 344).

The fuse box is on the driver's side on the side of

the cockpit under a cover.

Mercedes-Benz recommends you have the

fuse box opened at an authorized Mercedes-

Benz Center.

Opening and closing the fuse box in the rear

passenger compartment

Requirements

Observe the notes on electrical fuses.

Fold the right-hand seat cushion forward

(/ page 94).

Fold out and remove cover 1.

346

Breakdown assistance

Breakdown assistance for Your Mercedes G Class SUV Fourth Generation (2019-2024)

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