Get Maintenance and care Guide for Mercedes G Class SUV Fourth Generation (2019-2024)

ASSYST PLUS service interval display

Function of the ASSYST PLUS service interval dis-

play

The ASSYST PLUS service interval display on the

instrument display informs you of the time or dis-

tance remaining before the next service due date.

You can hide this service display using the back

button G on the steering wheel.

Depending on how the vehicle is used, the

ASSYST PLUS service interval display may shorten

the service interval, e.g. in the following cases:

Mainly short-distance driving

When the engine is oen le idling for long

periods

In the event of frequent cold start phases

Mercedes-Benz recommends avoiding such oper-

ating conditions.

You can obtain information concerning the servic-

ing of your vehicle from a qualied specialist

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

ter.

Displaying the service due date

On-board computer:

Service

ASSYST PLUS

The next service due date is displayed.

To exit the display: press the back button

G on the steering wheel.

Bear in mind the following related topic:

Operating the on-board computer

(/ page 203).

Information on regular maintenance work

NOTE Premature wear through failure to

observe service due dates

Maintenance work which is not carried out at

the right time or incompletely can lead to

increased wear and damage to the vehicle.

Adhere to the prescribed service inter-

vals.

Always have the prescribed maintenance

work carried out at a qualied specialist

workshop.

Notes on special service requirements

The prescribed service interval is based on nor-

mal operation of the vehicle. Have the mainte-

nance work carried out more oen than prescri-

bed if operating conditions are dicult or the

vehicle is subject to increased stress.

The ASSYST PLUS service interval display is only

an aid. It is the responsibility of the driver of the

vehicle to have maintenance work carried out

more oen than prescribed due to actual operat-

ing conditions and/or stresses.

Examples of arduous operating conditions:

Regular city driving with frequent intermediate

stops

Mainly short-distance driving

Frequent operation in mountainous terrain or

on poor road surfaces

316

Maintenance and care

When the engine is oen le idling for long

periods

Operation in particularly dusty conditions

and/or if air-recirculation mode is frequently

used

In these or similar operating conditions, have the

interior air lter, air lter, engine oil and oil lter,

for example, changed more frequently. If subject

to increased stress, check the tires more. Further

information can be obtained at a qualied special-

ist workshop.

Battery disconnection periods

The ASSYST PLUS service interval display can cal-

culate the service due date only when the battery

is connected.

Display and note down the service due date

on the instrument display before disconnect-

ing the battery (/ page 316).

Engine compartment

Opening and closing the hood

WARNING Risk of accident due to driving

with the hood unlocked

The hood may open and block your view.

Never release the hood when driving.

Before every trip, ensure that the hood is

locked.

WARNING Risk of accident and injury

when opening and closing the hood

The hood may suddenly drop into the end

position.

There is a risk of injury for anyone in the

hood's range of movement.

Do not open or close the hood if there is

a person in the hood's range of move-

ment.

WARNING Risk of burns when opening the

hood

If you open the hood in the event of an over-

heated engine or re in the engine compart-

ment, the following situations may occur:

You may come into contact with hot gases.

You may come into contact with other

escaping hot operating uids.

Before opening the hood, allow the

engine to cool down.

In the event of a re in the engine com-

partment, keep the hood closed and call

the re service.

WARNING Risk of injury due to moving

parts

Components in the engine compartment can

continue to run or start unexpectedly even

when the ignition is switched o.

Observe the following before performing tasks

in the engine compartment:

Maintenance and care

317

Switch o the ignition.

Never touch the danger zone surround-

ing moving components, e.g. the rotation

area of the fan.

Remove jewelery and watches.

Keep items of clothing and hair away

from moving parts.

WARNING Risk of injury from touching live

components

The ignition system and the fuel injection sys-

tem operate with a high voltage. You could

receive an electric shock.

Never touch components of the ignition

system or fuel injection system when the

vehicle is switched on.

The live components include the following, for

example:

Ignition coils

Fuel injectors

Electric lines to the ignition coils and the fuel

injectors

WARNING Risk of burns from hot compo-

nent parts in the engine compartment

Certain component parts in the engine com-

partment can be very hot, e.g. the engine, the

cooler and parts of the exhaust system.

Allow the engine to cool down and only

touch component parts described in the

following.

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.

Opening the hood

To release the hood, pull on handle 1.

318

Maintenance and care

Push handle 1 of the hood catch upwards

and li the hood by approximately 15 in

(40 cm).

The hood will be opened and held open auto-

matically by the pneumatic spring.

Closing the hood

Lower the hood until the hood catch engages.

Then, press the hood rmly into the lock with

both hands until it is completely closed.

If the hood can still be lied slightly, open the

hood again and repeat the previous step until

it engages correctly.

Engine oil

▌Checking the engine oil level using the on-

board computer

Requirements:

The engine has been warmed up.

The vehicle is parked on a level surface.

The engine is running at idle speed.

The hood is closed.

The engine oil level is determined during driving.

Determining the engine oil level can take up to

30 minutes with a normal driving style and even

longer with an active driving style.

Before every o-road drive, ll the engine oil

level up to the maximum.

Wait at least ve minutes aer the initial

check using the on-board computer. Aer

this, make a second request and add engine

oil according to the specications.

On-board computer:

Service

Engine Oil Level

One of the following messages will appear on the

instrument display:

Measuring Engine Oil Level...: measurement

of the oil level is not yet possible.

Repeat the request aer a maximum of

30 minutes' driving.

Engine Oil Level OK and the bar display for

indicating the oil level on the instrument dis-

play is green and is between "min" and "max":

the oil level is correct.

If the bar is at "min": add approximately

1.1 US qt (1 l) of engine oil.

If the bar is in the middle: add approximately

0.5 US qt (0.5 l) of engine oil.

Engine Oil Level Add 1.0 l and the bar display

for indicating the oil level on the instrument

display is orange and is below "min":

Maintenance and care

319

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

Reduce Engine Oil Level and the bar display

for indicating the oil level on the instrument

display is orange and is above "max":

Drain o any excess engine oil that has been

added. To do so, consult a qualied specialist

workshop.

For Engine Oil Level Switch Ignition On

Switch on the vehicle to check the engine oil

level.

Engine Oil Level System Inoperative: The oil

level sensor is defective or not connected.

Consult a qualied specialist workshop.

Engine Oil Level System Currently Unavail.

Close the hood.

▌Relling engine oil

WARNING Risk of burns from hot compo-

nent parts in the engine compartment

Certain component parts in the engine com-

partment can be very hot, e.g. the engine, the

cooler and parts of the exhaust system.

Allow the engine to cool down and only

touch component parts described in the

following.

WARNING Risk of re and injury from

engine oil

If engine oil comes into contact with hot com-

ponent parts in the engine compartment, it

may ignite.

Make sure that no engine oil is spilled

next to the ller opening.

Allow the engine to cool o and thor-

oughly clean the engine oil from compo-

nent parts before starting the vehicle.

NOTE Engine damage caused by an incor-

rect oil lter, incorrect oil or additives

Do not use engine oils or oil lters which

do not correspond to the specications

explicitly prescribed for the service inter-

vals.

Follow the instructions on the service

interval display for changing the engine

oil and observe the prescribed change

intervals.

Do not use additives.

NOTE Damage caused by adding too

much engine oil

Excessive engine oil can damage the engine or

the catalytic converter.

Have excess engine oil removed in a

qualied specialist workshop.

320

Maintenance and care

Depending on driving style, the vehicle con-

sumes up to 0.9 US qt (0.8 liters) of oil per

600 miles (1,000 km). The oil consumption

may also be higher than this when the vehicle

is new or if you frequently drive at high engine

speeds.

Turn cap 1 counter-clockwise and remove it.

Rell engine oil.

Replace cap 1 and turn it clockwise until it

engages.

Check the oil level again (/ page 319).

Checking the coolant level

WARNING Risk of burns from hot compo-

nent parts in the engine compartment

Certain component parts in the engine com-

partment can be very hot, e.g. the engine, the

cooler and parts of the exhaust system.

Allow the engine to cool down and only

touch component parts described in the

following.

WARNING Risk of scalding from hot cool-

ant

If you open the cap, you could be scalded.

Let the motor cool down before opening

the cap.

When opening the cap, wear protective

gloves and safety glasses.

Open the cap slowly to release pressure.

Park the vehicle on a level surface.

Check the coolant temperature display on the

instrument display.

The coolant temperature must be in the bot-

tom quarter of the temperature indicator.

Maintenance and care

321

Slowly turn cap 1 counter-clockwise to

release overpressure.

Continue turning cap 1 counter-clockwise

and remove it.

The coolant level is correct in the following cases:

If the engine is cold, the coolant is up to

marker bar

If the engine is warm, the coolant is up to

0.6 in (1.5 cm) over the marker bar

If necessary, rell with coolant that has been

approved for Mercedes-Benz.

Further information on coolant (/ page 384).

Filling the windshield washer system

WARNING Risk of burns from hot compo-

nent parts in the engine compartment

Certain component parts in the engine com-

partment can be very hot, e.g. the engine, the

cooler and parts of the exhaust system.

Allow the engine to cool down and only

touch component parts described in the

following.

WARNING ‑ Risk of re and injury from

windshield washer concentrate

Windshield washer concentrate is highly am-

mable. It could ignite if it comes into contact

with hot engine component parts or the

exhaust system.

Make sure that no windshield washer

concentrate spills out next to the ller

opening.

Turn cap 1 counter-clockwise and remove it.

Add washer uid.

Replace cap 1 and turn it clockwise until it

engages.

322

Maintenance and care

Keeping the air/water duct free

Keep the area between the hood and the

windshield free of deposits, e.g. ice, snow or

leaves.

Cleaning and care

Information on washing the vehicle in a car wash

WARNING Risk of accident due to

reduced braking eect aer washing the

vehicle

The braking eect is reduced aer washing

the vehicle.

Aer the vehicle has been washed, brake

carefully while paying attention to the

trac conditions until the braking eect

has been fully restored.

NOTE Damage from automatic braking

If one of the following functions is activated,

the vehicle will brake automatically in certain

situations:

Active Brake Assist

Active Distance Assist DISTRONIC

HOLD function

Active Parking Assist

To avoid damage to the vehicle, deactivate

these systems in the following or similar situa-

tions:

During towing.

In a car wash.

NOTE Damage due to unsuitable car wash

Before driving into a car wash make sure

that the car wash is suitable for the vehi-

cle dimensions.

Ensure there is sucient ground clear-

ance between the underbody and the

guide rails of the car wash.

Ensure that the clearance width of the

car wash, in particular the width of the

guide rails, is sucient.

To avoid damage to your vehicle when using a car

wash, ensure the following beforehand:

Active Distance Assist DISTRONIC is deactiva-

ted.

The HOLD function is switched o.

The 360° Camera or the reversing camera is

switched o.

The side windows and sliding sunroof are com-

pletely closed.

The blower for the ventilation and heating is

switched o.

The windshield wiper switch is in position g.

For car washes with a conveyor system:

Neutral i is engaged.

Maintenance and care

323

If you would like to leave the vehicle while

it is being washed, make sure the key is

located in the vehicle. Park position j

will otherwise be engaged automatically.

If, aer the car wash, you remove the wax

from the windshield and wiper rubbers, this

will prevent smearing and reduce wiper noise.

Information on using a power washer

WARNING Risk of an accident when using

power washers with round-spray nozzles

The water jet can cause externally invisible

damage.

Components damaged in this way may unex-

pectedly fail.

Do not use a power washer with round-

spray nozzles.

Have damaged tires or chassis parts

replaced immediately.

To avoid damage to your vehicle, observe the fol-

lowing when using a power washer:

Maintain a distance of at least 11.8 in (30 cm)

to the vehicle.

Vehicles with decorative lms: parts of your

vehicle are covered with a decorative lm.

Maintain a distance of at least 27.6 in (70 cm)

between the lm-covered parts of the vehicle

and the nozzle of the power washer. Move the

power washer nozzle around while cleaning.

The water temperature of the power washer

must not exceed 140°F (60°C).

Observe the information on the correct dis-

tance in the equipment manufacturer's oper-

ating instructions.

Do not direct the nozzle of the power washer

directly at sensitive parts, such as tires, gaps,

electrical components, batteries, light sources

and ventilation slits.

Washing the vehicle by hand

NOTE Damage to the wheel arch ares

and bumpers if used as a step

The wheel arch ares and bumpers can be

damaged or become detached from the vehi-

cle if you use them as a step.

Only use the two steps indicated on the

rear bumper.

NOTE Engine damage due to water ingress

Take care not to point the water jet

directly towards the air inlet grille below

the hood.

Requirements

Observe the relevant legal requirements (e.g.

in some countries, washing by hand is permit-

ted only in specially designated wash bays).

Use a mild cleaning agent (e.g. car shampoo).

Wash the vehicle with lukewarm water using a

so car sponge. When doing so, do not

expose the vehicle to direct sunlight.

324

Maintenance and care

Carefully hose the vehicle o with water and

dry using a chamois.

Notes on paintwork/matt nish paintwork care

To avoid damaging the paintwork and interfering

with the driving assistance systems, please

observe the following notes:

Paint

Insect remains: soak with insect remover and

rinse o the treated areas aerwards.

Bird droppings: soak with water and rinse o

aerwards.

Tree resin, oils, fuels and greases: remove by

rubbing gently with a cloth soaked in petro-

leum ether or lighter uid.

Coolant and brake uid: remove with a damp

cloth and clean water.

Tar stains: use tar remover.

Wax: use silicone remover.

Do not attach stickers, lms or similar materi-

als. Have lm attached to the bumper only at

a qualied specialist workshop.

Remove dirt immediately, where possible.

Matt nish

Use only care products approved for

Mercedes-Benz.

Do not attach stickers, lms or similar materi-

als. Have lm attached to the bumper only at

a qualied specialist workshop.

Do not polish the vehicle and alloy wheels.

Use only car washes that correspond to the

latest engineering standards.

Do not use any car wash program with a nal

hot wax treatment.

Do not use paint cleaners, bung or polishing

products or gloss preservers, e.g. wax.

In the event of paintwork damage:

Always have paintwork repairs carried out at a

qualied specialist workshop.

Make sure the radar sensors function

(/ page 159).

Notes on cleaning decorative lms

Observe the "Notes on paintwork/matte nish

paintwork care" (/ page 325). They also apply to

matte decorative lms.

Observe the notes on cleaning decorative lms to

avoid damage.

Cleaning

For cleaning, use plenty of water and a mild

cleaning agent without additives or abrasive

substances (e.g. a car shampoo approved for

Mercedes-Benz).

Remove dirt as soon as possible. Avoid rub-

bing too hard in order not to damage the dec-

orative lm irreparably.

If there is dirt on the nish or if the decorative

lm is dull: use the paint cleaner recommen-

ded and approved for Mercedes-Benz.

Insect remains: soak with insect remover and

rinse o the treated areas aerwards.

Bird droppings: soak with water and rinse o

aerwards.

Maintenance and care

325

To prevent water stains, dry a lm-wrapped

vehicle with a so, absorbent cloth aer every

car wash.

Avoiding damage to the decorative lm

The service life and color of decorative lms

are impaired by:

Sunlight

Temperature (e.g. hot air blower)

Weather conditions

Stone chippings and dirt

Chemical cleaning agents

Oily products

Do not use polish on matte decorative lm.

Polishing will have the eect of shining the

lm-wrapped surface.

Do not treat matte or structured decorative

lms with wax. Permanent stains may occur.

Scratches, corrosive deposits, areas aected by

corrosion and damage caused by incorrect care

cannot always be completely repaired. In this

case, contact a qualied specialist workshop.

You can obtain more information on care and

cleaning agents from the manufacturer.

In the case of lm-wrapped surfaces, visual dier-

ences may occur between the surfaces that were

not protected by a decorative lm aer a decora-

tive lm has been removed.

Have work or repairs to decorative lms car-

ried out at a qualied specialist workshop

(e.g. at an authorized Mercedes-Benz Center).

Notes on care of car parts

WARNING Risk of entrapment if the wind-

shield wipers are switched on while the

windshield is being cleaned

If the windshield wipers are set in motion

while you are cleaning the windshield or wiper

blades, you can be trapped by the wiper arm.

Always switch o the windshield wipers

and the vehicle before cleaning the wind-

shield or wiper blades.

To avoid damage to the vehicle, observe the notes

on cleaning and care of the following car parts:

Wheels and rims

Use water and acid-free alloy wheel cleaners.

Do not use acidic alloy wheel cleaners to

remove brake dust. This could damage wheel

bolts and brake components.

To avoid corrosion of the brake discs and

pads, drive the vehicle for a few minutes aer

cleaning before parking it. The brake discs and

pads will warm up and dry out.

Windows

NOTE Damage to electronic components

due to excess uids

When cleaning the windows from the inside,

uids such as cleaning agents or water may

run down and get behind trim parts of the

vehicle interior and cause damage to elec-

tronic components.

Use cleaning agents as sparingly as pos-

sible.

Immediately absorb any excess uids.

326

Maintenance and care

Clean the windows inside and outside with a

damp cloth and with a cleaning agent recom-

mended for Mercedes-Benz.

Do not use dry cloths or abrasive or solvent-

based cleaning agents to clean the insides of

windows.

Aer changing the wiper blades or treating

the vehicle with wax, clean the windshield

thoroughly with cleaning agents recommen-

ded for Mercedes-Benz. Failure to observe the

application instructions may result in damage,

smear marks or glare spots.

Remove external fogging or dirt on the wind-

shield in front of the multifunction camera.

Otherwise, driving systems and driving safety

systems may be impaired or unavailable

(/ page 159).

Wiper blades

Fold out the wiper blades and clean them

using a damp cloth.

Fold the wiper arm away from the rear window

(/ page 115).

Make sure that the wiper blades are coated.

The coating may leave residue on a cloth. Do

not rub the wiper blades excessively or clean

them too oen.

Exterior lighting

Clean the lenses with a wet sponge and mild

cleaning agent (e.g. car shampoo).

Use only cleaning agents or cleaning cloths

that are suitable for plastic lenses.

Sensors

Clean the sensors in the front and rear bump-

ers with a so cloth and car shampoo

(/ page 159).

When using a power washer, maintain a mini-

mum distance of 11.8 in (30 cm).

Running boards

Use water and acid-free cleaning agents.

Do not clean the aluminum trim inserts of the

running board with alkaline or acidic cleaning

agents such as wheel cleaners. Do not use

acidic alloy wheel cleaners to remove brake

dust. The aluminum trim inserts could other-

wise be damaged.

Reversing camera and 360° Camera

Open the camera cover with the multimedia

system (/ page 187).

Use clean water and a so cloth to clean the

camera lens.

Do not use a power washer.

Trailer hitch

Observe the notes on care in the trailer hitch

manufacturer's operating instructions.

Do not clean the ball neck with a power

washer or solvent.

Remove traces of rust on the ball (e.g. using a

wire brush).

Remove dirt with a lint-free cloth.

Aer cleaning, lightly oil or grease the ball

head.

Before using trailers with anti-torsional cou-

pling, observe the manufacturer's operating

instructions.

Maintenance and care

327

Notes on care of the interior

WARNING Risk of injury from plastic parts

breaking o aer the use of solvent-based

care products

Care and cleaning products containing sol-

vents can cause surfaces in the cockpit to

become porous. When the airbags are

deployed, plastic parts may break away.

Do not use any care or cleaning products

containing solvents to clean the cockpit.

WARNING Risk of injury or fatal injuries

from bleached seat belts

Bleaching or dyeing seat belts can severely

weaken them.

This can, for example, cause seat belts to tear

or fail in an accident.

Never bleach or dye seat belts.

To avoid damage to the vehicle, observe the fol-

lowing notes on cleaning and care:

Seat belts

Clean with lukewarm soapy water.

Do not use chemical cleaning agents.

Do not dry by heating them to over 176°F

(80°C) or exposing them to direct sunlight.

Display

Switch o the display and let it cool down.

Clean the surface carefully with a microber

cloth and a suitable display care product (TFT-

LCD).

Do not use any other agents.

Head-up display

Clean with a so, non-static, lint-free cloth.

Do not use cleaning agents.

Plastic trim

Clean with a damp microber cloth.

For heavy soiling: use a cleaning agent recom-

mended for Mercedes-Benz.

Do not attach stickers, lms or similar materi-

als.

Do not allow cosmetics, insect repellent or

sun cream to come into contact with the plas-

tic trim.

Real wood and trim elements

Clean with a microber cloth.

Black piano-lacquer look: clean with a damp

cloth and soapy water.

For heavy soiling: use a cleaning agent recom-

mended for Mercedes-Benz.

Do not use solvent-based cleaning agents, pol-

ishes or waxes.

Headliner

Clean with a brush or dry shampoo.

Carpet

Use a carpet and textile cleaning agent recom-

mended for Mercedes-Benz.

Steering wheel made of genuine leather or DINA-

MICA

NOTE Damage caused by wrong cleaners

Do not use solvent-based cleaning

agents such as tar remover or wheel

328

Maintenance and care

cleaner; neither should you use polishes

or waxes. Otherwise you may damage

the nish.

Clean with a damp cloth and 1% soapy water

solution and then wipe with a dry cloth.

For heavy soiling: use a cleaning agent recom-

mended for Mercedes-Benz.

Leather care: use a leather care agent that

has been recommended for Mercedes-Benz.

Do not allow the leather to become too damp.

Do not use a microber cloth.

Leather is a natural product. It exhibits natural

surface properties such as dierences in

structure, marks caused by growth and injury

or subtle color dierences. These surface

properties are characteristics of leather and

not material malfunctions. Leather is also sub-

ject to a natural aging process during which

the surface properties change.

Genuine leather seat covers

Vacuum up dirt such as crumbs or dust and

then clean the seat covers with a damp cotton

cloth and wipe down with a dry cloth. Regu-

larly clean the seat covers.

For heavy soiling: use a leather care agent rec-

ommended for Mercedes-Benz aercare.

Leather care: use a leather care agent that

has been recommended for Mercedes-Benz.

Do not use a microber cloth.

Do not allow the leather to become too damp.

Do not use oil-based cleaning and care prod-

ucts.

Leather is a natural product. It exhibits natural

surface properties such as dierences in

structure, marks caused by growth and injury

or subtle color dierences. These surface

properties are characteristics of leather and

not material malfunctions. Leather is also sub-

ject to a natural aging process during which

the surface properties change.

Waves or wrinkling in the seat cover may

occur due to the stress on the seat; this is

caused by the natural leather material.

Regular cleaning and care of the leather

reduces soiling, wear marks and aging dam-

age and thus signicantly extends its life

span. Clothing that can leave stains (e.g.

jeans) may discolor the leather.

Imitation leather seat covers

Vacuum up dirt such as crumbs or dust and

then use a damp cotton cloth and a 1% soap

solution to clean the entire seat cover. Do not

spot clean.

Use cleaning and care products recommen-

ded for Mercedes-Benz.

Do not use a microber cloth.

Do not use oil-based cleaning and care prod-

ucts.

Wooden trunk oor

NOTE Damage caused to the wood lug-

gage-compartment oor by wrong clean-

ers

Do not use microber cloths.

Do not use commercially available furni-

ture polishes and sprays.

Do not use steam cleaners.

Maintenance and care

329

Do not apply self-adhesive lms or adhesive strips

to the wooden luggage-compartment oor; the

solvent residue and plasticizers contained in them

may destroy the paintwork.

Cleaning the wooden luggage-compartment oor

Use a cotton cloth to remove dust, dirt and

ngerprints.

If necessary, moisten the cotton cloth with

clean water.

Use care oil recommended and approved by

Mercedes-Benz to care for and protect the

wooden luggage-compartment oor. This revital-

izes the wooden surface and increases the resil-

ience of the wood.

Caring for the wooden trunk oor

Sand the wooden surface along the grain with

the sanding pad.

Clean o the sanding dust.

Using a cotton cloth, distribute a thin layer of

care oil evenly along the grain on the wooden

surface.

Using a second cotton cloth, rub in the

remaining care oil.

Allow to soak in for approximately four hours

before loading.

For heavily worn surfaces, repeat the treat-

ment if necessary.

330

Maintenance and care

Maintenance and care for Your Mercedes G Class SUV Fourth Generation (2019-2024)

Related Topics

Popular Owner Manuals

Latest Owner Manuals