2015 MERCEDES-BENZ G-Class maintenance

Useful information
i This Operator's Manual describes all
models and all standard and optional equip- ment of your vehicle available at the time of
publication of the Operator's Manual.
Country-specific differences are possible.
Please note that your vehicle may not be
equipped with all features described. This
also applies to safety-related systems and
functions.
i Read the information on qualified special-
ist workshops: (Y page 24). Overview of climate control systems
Important safety notes
Observe the settings recommended on the
following pages. The windows could other-
wise fog up. This could prevent you from
observing the traffic conditions, thereby
causing an accident.
Climate control regulates the temperature
and the humidity in the vehicle interior and
filters undesirable substances from the air.
Dual-zone automatic climate control is only
operational when the engine is running. Opti-
mum operation is only achieved if you drive
with the side windows and sliding sunroof
closed.
The climatic comfort deteriorates whilst the
sliding sunroof is open. The automatic climate control cannot maintain the set temperature
with the sliding sunroof open. You have to
adjust the climate control manually.
i The residual heat function can only be
activated or deactivated with the ignition
switched off (Y page 127).
i Ventilate the vehicle for a brief period
during warm weather, e.g. using the con-
venience opening feature (Y page 78). This
will speed up the cooling process and the
desired vehicle interior temperature will be reached more quickly. i
The integrated filter can filter out most
particles of dust, and completely filters out pollen. A clogged filter reduces the amount
of air supplied to the vehicle interior. For
this reason, you should always observe the interval for replacing the filter, which is
specified in the Maintenance Booklet. As it depends on environmental conditions, e.g. heavy air pollution, the interval may be
shorter than stated in the Maintenance
Booklet. 118
Overview of climate control systemsClimate control

X
To apply: pull parking brake ;up firmly.
Parking brake ;is applied.
When the ignition is switched on or the
engine is running, the F(USA only) or
J (Canada only) indicator lamp is lit in
the instrument cluster.
X To release: depress the brake pedal and
keep it depressed.
The selector lever lock is released.
X Pull parking brake ;up firmly.
X Press release button :on parking
brake ;and move parking brake ;down
to the stop.
When the ignition is switched on or the
engine is running, the F(USA only)
or ! (Canada only) indicator lamp goes
out in the instrument cluster.
i If you pull away with parking brake
;
applied, a warning tone sounds. Parking the vehicle for a long period
If you leave the vehicle parked for longer than
four weeks, the battery may be damaged by
exhaustive discharge.
X Connect a trickle charger.
i You can obtain information about trickle
chargers from a qualified specialist work-
shop.
If you leave the vehicle parked for longer than
six weeks, the vehicle may suffer damage as a result of lack of use.
X Visit a qualified specialist workshop and
seek advice. Driving tips
General driving tips
Important safety notes G
WARNING
Always remember that you must concentrate primarily on driving the vehicle. The driver's concentration must always be directed pri-
marily at road traffic. For your own safety and that of others, we recommend that you stop
the vehicle at a safe place and in accordancewith the traffic conditions before making or
accepting a phone call.
Comply with all legal requirements if you use
the telephone while driving. Use the hands-
free system and only use the telephone when
road, weather and traffic conditions permit. In
some jurisdictions, it is forbidden for drivers
to use mobile phones while driving.
Only operate COMAND (Cockpit Management and Data System) in compliance with all legal
requirements and when the road, weather and traffic conditions permit. You may otherwise
not be able to observe the traffic conditions,
endangering yourself and others.
Remember that your vehicle covers a distance of 44 ft (approximately 14 m)a second when
it is traveling at only 30 mph (approximately
50 km/h). G
WARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with limitations, or not at all. This could affect, for example, the power steering and the brake
boosting effect. You will require considerably
more effort to steer and brake. There is a risk of an accident.
Do not switch off the ignition while driving.
Drive sensibly – save fuel Observe the following tips to save fuel:
X The tires should always be inflated to the
recommended tire pressure.
X Remove unnecessary loads.
X Remove roof carriers when they are not
needed.
X Warm up the engine at low engine speeds.
X Avoid frequent acceleration or braking.
X Have all maintenance work performed at
the service intervals specified in the Ser- 152
Driving tipsDriving and parking

vice Booklet or indicated by the service
interval indicator.
Fuel consumption also increases when driv-
ing in cold weather, in stop-start traffic and in
hilly terrain.
Drinking and driving G
WARNING
Drinking and driving and/or taking drugs and driving are very dangerous combinations.
Even a small amount of alcohol or drugs can
affect your reflexes, perceptions and judg-
ment.
The possibility of a serious or even fatal acci-
dent are greatly increased when you drink or
take drugs and drive.
Do not drink or take drugs and drive or allow
anyone to drive who has been drinking or tak-
ing drugs.
Pedals G
WARNING
Objects in the driver's footwell can restrict the pedal travel or obstruct a depressed pedal.
The operating and road safety of the vehicle is
jeopardized. There is a risk of an accident.
Make sure that all objects in the vehicle are
stowed correctly, and that they cannot enter
the driver's footwell. Install the floormats
securely and as specified in order to ensure
sufficient clearance for the pedals. Do not use loose floormats and do not place floormats on
top of one another.
Emission control G
WARNING
Inhalation of exhaust gas is hazardous to your health. All exhaust gas contains carbon mon-
oxide (CO), and inhaling it can cause uncon-
sciousness and possible death.
Do not run the engine in confined areas (such as a garage) which are not properly ventilated.
If you think that exhaust gas fumes are enter- ing the vehicle while driving, have the cause
determined and corrected immediately. If you
must drive under these conditions, drive only with at least one window fully open at all
times.
Certain engine systems are designed to keep
the level of poisonous components in exhaust fumes within legal limits.
These systems only work at peak efficiency if they are serviced exactly in accordance with
the manufacturer's specifications. For this
reason, all work on the engine should only be carried out by qualified and authorized
Mercedes-Benz technicians.
The engine settings must not be changed
under any circumstances. Furthermore, all
specific service work must be carried out at
regular intervals and in accordance with the
Mercedes-Benz service requirements. Details
can be found in the Maintenance Booklet. Braking
Important safety notes G
WARNING
If you activate the LOW off-road gear while
driving on a slippery road surface, the wheels may lose traction:
R if you remove your foot from the accelera-
tor pedal when driving
R if off road ABS intervenes when braking
If the wheels lose traction. the vehicle can no
longer be steered. There is an increased dan- ger of skidding and accidents.
Never activate the LOW off-road gear while
driving on a slippery road surface.
Downhill gradients !
On long and steep gradients, you must
reduce the load on the brakes by shifting
early to a lower gear. This allows you to take
advantage of the engine braking effect and Driving tips
153Driving and parking Z

Mercedes-Benz recommends that you only
have brake pads/linings installed on your
vehicle which have been approved for
Mercedes-Benz vehicles or which correspond to an equivalent quality standard. Brake
pads/linings which have not been approved
for Mercedes-Benz vehicles or which are not
of an equivalent quality could affect your vehi-
cle's operating safety.
Mercedes-Benz recommends that you only
use brake fluid that has been specially
approved for your vehicle by Mercedes-Benz,
or which corresponds to an equivalent quality standard. Brake fluid which has not been
approved for Mercedes-Benz vehicles or
which is not of an equivalent quality could
affect your vehicle's operating safety.
All checks and maintenance work on the
brake system must be carried out at a quali-
fied specialist workshop.
Have brake pads installed and brake fluid
replaced at a qualified specialist workshop.
If your brake system is subject only to mod-
erate loads, you should test the functionality
of your brakes at regular intervals by pressing
firmly on the brake pedal at high speeds. This improves the grip of the brake pads.
You can find a description of Brake Assist
(BAS) on (Y page 62).
High-performance brake system for
AMG vehicles The high-performance brake system is only
installed on the G 63 AMG and the G 65 AMG.
The high-performance brake system is
designed for heavy loads. This may lead to
noise when braking. This will depend on:
R Speed
R Braking force
R Environmental conditions, such as temper-
ature and humidity
The wear of individual components of the
brake system, such as the brake pads/linings
or brake discs, depends on the individual driv-
ing style and operating conditions. For this reason, it is impossible to state a
mileage that will be valid under all circum-
stances. An aggressive driving style will lead
to high wear. You can obtain further informa-
tion about this from your authorized
Mercedes-Benz Center.
New and replaced brake pads and discs only
reach their optimum braking effect after sev-
eral hundred kilometers of driving. Compen-
sate for this by applying greater force to the
brake pedal. Keep this in mind, and adapt
your driving and braking accordingly during
this break-in period.
Excessive heavy braking results in corre-
spondingly high brake wear. Observe the
brake system warning lamp in the instrument
cluster and note any brake status messages
in the multifunction display. For high-per-
formance driving in particular, it is important
to maintain and have the brake system
checked regularly.
Parking brake G
WARNING
If you must brake the vehicle with the parking brake, the braking distance is considerably
longer and the wheels could lock. There is an
increased danger of skidding and accidents.
Only use the parking brake to brake the vehi- cle when the service brake is faulty. Do not
apply the parking brake too firmly. If the
wheels lock, release the parking brake until
the wheels begin turning again.
If you brake the vehicle with the parking
brake, the brake lamps will not light up.
If you drive on wet roads or dirt-covered sur-
faces, road salt and/or dirt could get into the parking brake. Driving tips
155Driving and parking Z

Maintenance menu
Example: service menu
In the Service
Service menu, you have the following
options:
R Calling up display messages
(Y page 212)
R Checking the tire pressure electronically
(Y page 314)
R Calling up the service due date
(Y page 280) Settings menu
Introduction Example: settings menu
In the Sett. Sett. menu, you have the following
options:
R Changing the instrument cluster settings
(Y page 206)
R Changing the light settings (Y page 207)
R Changing the vehicle settings
(Y page 208)
R Changing the convenience settings
(Y page 208)
R Restoring the factory settings
(Y page 209) Instrument cluster Selecting the unit of measurement for dis-
tance
The Display Unit Speed-/Odometer: Display Unit Speed-/Odometer:
function allows you to choose whether cer-
tain displays appear in kilometers or miles in the multifunction display.
You can determine whether the multifunction
display shows some messages in miles or
kilometers.
X Press the =or; button on the steer-
ing wheel to select the Sett. Sett.menu.
X Press the :or9 button to select the
Inst. Cluster
Inst. Cluster submenu.
X Press ato confirm.
X Press the :or9 button to select the
Display Unit Speed-/Odometer:
Display Unit Speed-/Odometer: func-
tion.
You will see the selected setting: km kmor
miles miles.
X Press the abutton to save the setting.
The selected unit of measurement for dis-
tance applies to: R Vehicles with instrument cluster in kilo-
meters: digital speedometer in the Trip Trip
menu
R the odometer and the trip odometer
R the trip computer
R the current consumption and the range
R the navigation instructions in the Navi
Navi
menu
R cruise control
R SPEEDTRONIC
R DISTRONIC PLUS
R the service interval display 206
Menus and submenusOn-board computer and displays

Rear bench seat
Folding the rear bench seat forward
X
Fold rear seat backrest (Y page 251) for-
wards.
X Pull catch :in the direction of the arrow.
The corresponding rear bench seat is
released.
X Fold rear bench seat ;forwards. ;
Rear bench seat folded forward
Folding the rear bench seat into an
upright position G
WARNING
If the rear bench seat/rear seat and seat
backrest are not engaged they could fold for- wards, e.g. when braking suddenly or in the
event of an accident.
R The vehicle occupant would thereby be
pushed into the seat belt by the rear bench
seat/rear seat or by the seat backrest. The
seat belt can no longer offer the intended level of protection and could even cause
injuries.
R Objects or loads in the trunk/cargo com-
partment cannot be restrained by the seat
backrest.
There is an increased risk of injury.
Before every trip, make sure that the seat
backrests and the rear bench seat/rear seat
are engaged.
X Fold the rear bench seat back.
The seat catch engages audibly.
X Fold the backrest backwards (Y page 251).
X Install the head restraints (Y page 88). Securing cargo
Important safety notes Distribute the load on the cargo tie-down
rings evenly.
Do not tamper with or repair cargo tie-down
points, cargo tie-down rings or tie downs.
Have maintenance work as well as modifica-
tions, installations and conversions carried
out at a qualified specialist workshop
(Y page 24).
Observe the following notes on securing
loads:
R Secure the load using the cargo tie-down
rings.
R Do not use elastic straps or nets to secure
a load, as these are only intended as an
anti-slip protection for light loads.
R Do not route tie-downs across sharp edges
or corners.
R Pad sharp edges for protection.
R Only use tie downs that have been checked
in accordance with applicable standards,
e.g. lashing nets or lashing straps.
R Fill the spaces between the load and the
cargo compartment walls and the wheel
housing in a form-locking way. Only use
dimensionally stable transportation aids 252
Stowage areasStowage and features

X
Press OK
OKto confirm the message.
The voice connection with the Customer
Assistance center is terminated.
The Vehicle Diagnosis: Transfer‐ Vehicle Diagnosis: Transfer‐
ring data...
ring data... message appears.
The vehicle data is sent to the Customer
Assistance center.
Depending on what the customer service rep-
resentative agreed with you, the voice con-
nection is re-established after the transfer is
complete. If necessary, you will be contacted at a later time by another means, e.g. by e-
mail or phone.
Further functions of the vehicle remote mal-
function diagnosis include, for example:
R transfer of service data to the Customer
Assistance center. If a service is overdue,
the COMAND display shows a message
about various special offers at your work-
shop.
R monthly status information e-mail on oil
level, air pressure, maintenance, brakes,
etc. If applicable, you will receive informa-
tion on special offers in the e-mail.
USA only: this information can also be
called up under "Owners Online" at http://
www.mbusa.com.
Information on the data stored in the vehicle
(Y page 26).
Information on Roadside Assistance
(Y page 22).
Downloading routes Downloading routes allows you to transfer
and save predefined routes in the navigation
system. To do this, an SD memory card must
be inserted into the COMAND system. If no
SD memory card is inserted, you must insert
the card into the card slot on the COMAND
system before saving.
A route can be prepared and sent either by a
customer service representative or via the
mbrace portal on the Internet. Each route can include up to 20 way points. When a route has
been received by the navigation system, the 'Route name' has been saved to mem‐
'Route name' has been saved to mem‐
ory ory card.
card. Do
Doyou
you want
want to
tostart
start route
route
guidance?
guidance? message appears on the
COMAND display. The route is saved to the
SD memory card.
X To start route guidance: selectYes
Yes.
An overview of the route is shown in the
display.
i If you select
No No, the saved route can be
called up later in the navigation menu.
X Select Start
Start.
Route guidance is started.
i Downloaded and saved data can be called
up again in COMAND. Further information
can be found in the "COMAND", "Online
and Internet services" and "Download des-
tination/route" sections.
Speed alert You can define the upper speed limit, which
must not be exceeded by the vehicle. If this
selected speed is exceeded by the vehicle, a
message will be sent to the Customer Assis-
tance center. The Customer Assistance cen-
ter then forwards this information to you. You
can select the way in which you receive this
information beforehand. Possible options
include text message, e-mail or an automated call.
The data which is sent to the Customer Assis-tance center contains the following informa-
tion:
R the location where the speed limit was
exceeded
R the time at which the speed limit was
exceeded
R the selected speed limit which was excee-
ded
Geo fencing Geo fencing allows you to select areas which
the vehicle should not enter or leave. You will
be informed if the vehicle crosses the boun-
daries of the selected areas. You can select Features
265Stowage and features Z

Useful information
............................274
Engine compartment ........................274
Maintenance ...................................... 279
Care .................................................... 281 273Maintenance and care