2012 MERCEDES-BENZ G-Class check engine light

i
Hill start assist will aid you when pulling
away on a hill.
For further information, see "Hill start
assist" ( Y page 117).
Maximum gradient-climbing capability On good road surface conditions, the
maximum
gradient-climbing
capability is 80%,
which corresponds to an approach/
departure angle of 38°. Note that the
vehicle's gradient-climbing capability
depends on the off-road conditions.
Accelerate carefully and make sure that the
wheels do not spin when driving on steep
terrain.
i If the load on the front axle is reduced
when pulling away on a steep uphill slope,
the front wheels have a tendency to spin.
4ETS detects this and brakes the wheels
accordingly. The rear wheel torque is
increased, making it easier to drive off.
Brow of hill When driving on an uphill gradient, reduce
pressure slightly on the accelerator
immediately
before

reaching the top of the hill
(do not shift the transmission to position N).
Use the vehicle's own impetus to drive over
the top of the hill.
This style of driving prevents:
R the vehicle from lifting off the ground on the
brow of a hill
R loss of traction
R the vehicle from traveling too quickly down
the other side
Driving downhill R
Before tackling steep downhill gradients,
select shift range 1 (Y page 121).
This way you use the engine's braking
effect to reduce the speed. If this is not
sufficient, brake gently. When doing so, make sure that the vehicle is facing in the
direction of the line of fall.
R Observe the notes on driving in
mountainous terrain (Y page 139).
R Drive slowly.
R Do not drive at an angle down steep
inclines. Steer

into the line of fall and drive
with the front wheels aligned straight.
Otherwise, the vehicle could slip sideways,
tip and roll over.
R Check that the brakes are working normally
after a long downhill stretch.
i The special off-road ABS(Y page 54)
enables accurate, brief and repeated
locking of the front wheels, causing them
to dig into the loose ground. Note that when
the front wheels are fully braked, they slide
easily over the surface of the ground,
making it difficult to steer. Driving systems
Cruise control
Important safety notes Cruise control maintains a constant road
speed for you. On long and steep downhill
gradients, especially if the vehicle is laden,
you must select shift range 1, 2 or 3 in good
time. By doing so, you will make use of the
braking effect of the engine, which relieves
the load on the brake system and prevents
the
brakes

from overheating and wearing too
quickly.
Use cruise control only if road and traffic
conditions make it appropriate to maintain a
steady speed for a prolonged period. You can
set any road speed above 20 mph
(30 km/h). G
WARNING
The cruise control is a convenience system
designed to assist the driver during vehicle
operation. The driver is and must always Driving systems
139
Driving and parking
Z

Display messages Possible causes/consequences and
M Solutions©
TC
Shift
Procedure
Canceled The gear change process was not carried out.
X
Repeat the gearshift process. ©
TC Shift
Conditions Not
Fulfilled One or more conditions to shift the transfer case have not been
fulfilled.
X
Repeat the gearshift process. ©
TC In Neutral The transfer case is in the neutral position.
X
Shifting the transfer case into HIGH or LOW.©
Transfer Case
Service Required There is a malfunction in the transfer case.
X
Do not shift the transfer case.
X Have the vehicle checked as soon as possible at a qualified
specialist workshop. G
WARNING
If the transfer case is in Neutral,
the
park position P of the automatic transmission will not hold
the vehicle. The parking brake must be engaged to hold the vehicle in place. Warning and indicator lamps in the instrument cluster
Seat belts
Problem Possible causes/consequences and
M Solutions7
After starting the
engine, the red seat
belt
warning

lamp lights
up for six seconds. The seat belt warning lamp reminds the driver and front passenger
to fasten their seat belts.
X
Fasten your seat belt ( Y page 41).7
After starting the
engine, the red seat
belt
warning

lamp lights
up. In addition, a
warning tone sounds
for up to six seconds. G
Risk of injury
The driver's seat belt is not fastened.
X Fasten your seat belt ( Y page 41).
The warning tone ceases. 178
Warning and indicator lamps in the instrument cluster
On-board computer and displays

Problem Possible causes/consequences and
M Solutions!
The
yellow
ABS warning
lamp is lit while the
engine is running. G
Risk of accident
ABS (Anti-lock Brake System) is deactivated due to a malfunction.
Therefore, BAS

(Brake Assist), ESP ®
(Electronic Stability Program),
EBD (electronic brake force distribution) and 4ETS are also
deactivated.
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Visit a qualified specialist workshop.
If the ABS control unit is defective, other systems, such as the
navigation system or the automatic transmission, may also be
unavailable. !
The
yellow

ABS warning
lamp is lit while the
engine is running. G
Risk of accident
The on-board voltage is too low. ABS has been deactivated due to
undervoltage.
ESP ®
, BAS, EBD and 4ETS are therefore also deactivated, for
example.
The brake

system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Switch off consumers that are not required, e.g. the rear window
defroster or interior lighting.
ABS will be available again as soon as the vehicle's on-board
electrical system voltage increases.
If the warning lamp is still on:
X Have the battery and alternator checked at a qualified specialist
workshop. !
The
yellow

ABS warning
lamp is lit while the
engine is running. You have engaged the differential locks. ABS, BAS, EBD, ESP
®
and
4ETS are deactivated.
X Disengage the differential locks.
Subsequently, ABS, BAS, EBD, ESP ®
and 4ETS are reactivated. Warning and indicator lamps in the instrument cluster
181
On-board computer and displays Z

Engine
Problem Possible causes/consequences and
M Solutions
! (USA only)
; (Canada only)
The yellow Check
Engine warning lamp
lights up while the
engine is running. There may be a malfunction, for example:
R
in the engine management
R in the fuel injection system
R in the exhaust system
R in the ignition system
R in the fuel system
The emission limit values may be exceeded and the engine may
be running in emergency mode.
X Have the vehicle checked as soon as possible at a qualified
specialist workshop.
i In some states/provinces, you are required by law to
immediately visit a qualified specialist workshop if the yellow
Check Engine

warning lamp lights up. If in doubt, check whether
such legal regulations apply in the state/province in which you
are currently driving. !
(USA only)
; (Canada only)
The yellow Check
Engine warning lamp
lights up while the
engine is running. The fuel system pressure is too low. The fuel filler cap is not closed
correctly or the fuel system is leaking.
X Check that the fuel filler cap is correctly closed.
X If the fuel filler cap is not correctly closed:
close
the fuel filler
cap.
X If the fuel filler cap is closed: visit a qualified specialist
workshop. 9
The yellow reserve fuel
warning lamp lights up
while the engine is
running.
The fuel filler cap is not correctly closed.
X
Check that the fuel filler cap is correctly closed.
X If
the fuel filler cap is not correctly closed:
close
the fuel filler
cap.
X If the fuel filler cap is closed: visit a qualified specialist
workshop. 9
The yellow reserve fuel
warning lamp lights up
while the engine is
running.
The fuel level has dropped into the reserve range.
X
Refuel at the nearest gas station.184
Warning and indicator lamps in the instrument cluster
On-board computer and displays

X
Pull release lever : on the hood.
The hood is released.
! Make sure
that the windshield wipers are
not folded away from the windshield. You
could otherwise damage the windshield
wipers or the hood. X
Lift the hood slightly.
X Push hood catch handle ;
in
the direction
of the arrow and lift the hood.
Closing the hood G
WARNING
When closing the hood, use extreme caution
not to catch hands or fingers. Be careful that
you do not close the hood on anyone.
Make sure the hood is securely engaged
before driving off. Do not continue driving if
the hood can no longer engage after an
accident, for example. The hood could
otherwise come loose while the vehicle is in
motion and injure you and/or others. X
Lower the hood and let it fall from a height
of approximately 8 inches ( 20 cm).
X Check

that the hood has engaged properly.
If the hood can be raised slightly, it is not
properly engaged. Open it again and close
it with a little more force. Engine oil
Notes on the oil level Depending on the driving style, the vehicle
consumes up to 0.9 US qts
(0.8 l) of oil over
a distance of 600 miles (1,000 km). The oil
consumption may be higher than this when
the

vehicle is new or if you frequently drive at
high engine speeds.
Checking the oil level using the oil
dipstick On the G 55 AMG, the oil level can be checked
using the on-board computer.
When checking the oil level:
R
park the vehicle on a level surface.
R the engine should be switched off for
approximately five minutes if the engine is
at normal operating temperature.
R the engine should be switched off for at
least 30 minutes if the engine is not at
operating temperature

(i.e. if you only start
the engine briefly). Oil dipstick (example: G 550) Engine compartment
211Maintenance and care Z