2009 MERCEDES-BENZ GL SUV engine

Display messages
Possible causes/consequences and
X
X Solutions + Key not
detected
(red display
message)
The KEYLESS GO key* is not in the vehicle.
If the engine is switched off, you can no longer lock the vehicle
centrally or start the engine.
X
Pull over and stop the vehicle safely as soon as possible,
paying attention to road and traffic conditions.
X Locate the KEYLESS GO key*. The KEYLESS GO key* is not detected while the engine is
running because there is interference from a strong source of
radio waves.
X Pull over and stop the vehicle safely as soon as possible,
paying attention to road and traffic conditions.
X Operate the vehicle using the key in the ignition lock if nec-
essary. + Key not
detected
(white dis-
play mes-
sage)
The KEYLESS GO* key cannot be detected at present.
X
Change the location of the key with the KEYLESS GO func-
tion* in the vehicle.
X If the key with the KEYLESS GO* function still cannot be
detected: operate the vehicle with the key in the ignition
lock. + Key detec‐
ted in
vehicle
The KEYLESS GO key* has been detected inside the vehicle
during locking.
X
Remove the KEYLESS GO key* from the vehicle. + You need
a new key The key must be replaced.
X
Visit a qualified specialist workshop. + starting
button,
then
insert key
The KEYLESS GO* key cannot be detected continuously.
X
Insert the key into the ignition lock and turn it to the desired
position.
X Visit a qualified specialist workshop. & inopera‐
tive Bat‐
tery weak The on-board voltage is too low. The auxiliary heating/venti-
lation* has switched off or cannot be switched on.
X
Drive for a longer distance.
The battery is being charged. The auxiliary heating/venti-
lation *can be reactivated as soon as there is sufficient on-
board voltage. Display messages
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Display messages
Possible causes/consequences and
X
X Solutions & Inopera‐
tive
Refuel
vehicle The fuel level in the fuel tank is too low. The auxiliary heat-
ing* cannot be switched on.
X
Refuel at the nearest filling station. & inopera‐
tive See
Owner's
Manual
The auxiliary heating* is temporarily malfunctioning or is
defective.
X
When the vehicle is on a level surface and the engine has
cooled down, make up to four attempts to switch on the
auxiliary heating*, waiting several minutes between each
attempt.
X If the auxiliary heating* does not switch on, visit a qualified
specialist workshop. C There is only a small amount of fuel in the fuel tank.
X
Refuel at the nearest filling station. 8 Reserve
fuel The fuel level has fallen below the reserve range. The opera-
tion of the auxiliary heating* can no longer be guaranteed.
X
Refuel at the nearest filling station. ~ Please
enter PIN
You have not yet logged on to your mobile phone
*.
X Enter the PIN for the SIM card. ~ Bluetooth
ready The Bluetooth connection between your mobile phone and
the audio system or COMAND APS* is not activated.
X
If desired, activate the Bluetooth connection between the
mobile phone and the audio system or COMAND APS* (see
separate operating instructions). ~ No tele‐
phone
inserted
Your mobile phone is not inserted in the bracket*.
X
Insert the mobile phone into the bracket* ( Ypage 164). ¥ Top up
washer
fluid The washer fluid level has dropped to approximately
⅓of the
total reservoir capacity.
X Top up the windscreen washer fluid (Y page 178).232
Display messagesPractical advice
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Warning and indicator lamps in the instrument cluster
Problem
Possible causes/consequences and
X
X Solutions !
The yellow ABS
warning lamp is
lit while the
engine is run-
ning. G
Risk of accident
ABS (Anti-lock Brake System) is deactivated due to a fault. ABS
(Anti-lock Brake System) and ESP ®
(Electronic Stability Program)
and also PRE-SAFE ®
are therefore temporarily unavailable.
The brake system continues to function normally, but without the
functions listed above. Therefore, the wheels could lock if you
brake hard.
X Observe the additional messages in the multi-function display
(Y page 211).
X Drive on carefully.
X Visit a qualified specialist workshop. !
The yellow ABS
warning lamp is
lit while the
engine is run-
ning. G
Risk of accident
The on-board voltage is too low. ABS has been deactivated due to
undervoltage.
Therefore, ESP ®
, BAS and PRE-SAFE ®
are also deactivated.
The brake system continues to function normally, but without the
functions listed above. Therefore, the wheels could lock if you
brake hard.
X Switch off consumers that are not required, e.g. rear window
heating or interior lighting.
ABS will be available again as soon as the vehicle's electrical
system voltage increases. d
J
!
The yellow ESP
®
warning lamp,
the red brake
system warning
lamp and the
yellow ABS
warning lamp
light up while the
engine is run-
ning. A warning
tone also
sounds. G
Risk of accident
EBV is faulty. ABS, Brake Assist, ESP ®
and PRE-SAFE ®
are there-
fore no longer available. The brake system continues to function
normally, but without the functions listed above. Therefore, the
wheels could lock if you brake hard.
X Drive on carefully.
X Visit a qualified specialist workshop. Troubleshooting
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Problem
Possible causes/consequences and
X XSolutions d
The yellow ESP ®
warning lamp
flashes while the
vehicle is in
motion. G
Risk of accident
ESP ®
or traction control has intervened because there is a risk of
skidding or at least one wheel has started to spin.
Cruise control or Distronic* is deactivated.
X Only depress the accelerator pedal as far as necessary when
pulling away.
X Release the accelerator pedal while you are driving.
X Adapt your driving style to suit the road and weather conditions.
X Do not deactivate ESP ®
.
Exceptions: (Y page 52) d
The yellow ESP ®
warning lamp is
lit while the
engine is run-
ning. G
Risk of accident
ESP ®
is deactivated. ESP ®
will not stabilise the vehicle if it starts
to skid or if a wheel starts to spin.
X Reactivate ESP ®
.
Exceptions: (Y page 52)
X Adapt your driving style to suit the road and weather conditions. d
The yellow ESP ®
warning lamp is
lit while the
engine is run-
ning. In addition,
a message
appears in the
multi-function
display. G
Risk of accident
ESP ®
is unavailable due to a malfunction. ESP ®
will not stabilise
the vehicle if it starts to skid or if a wheel starts to spin.
X Observe the additional messages in the multi-function display
(Y page 211).
X Drive on carefully.
X Visit a qualified specialist workshop. +
The red SRS
warning lamp is
lit while the
engine is run-
ning. G
Risk of injury
There is a malfunction in the restraint system. The airbags or belt
tensioners may either be triggered unintentionally or, in the event
of an accident, not be triggered at all.
X Visit a qualified specialist workshop immediately. J
The red brake
system warning
lamp comes on
while the vehicle
is moving. A
warning tone
also sounds. You are driving with the parking brake applied.
X
Release the parking brake.
The warning lamp goes out and the warning tone ceases. 236
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Problem
Possible causes/consequences and
X
X Solutions J
The red brake
system warning
lamp comes on
while the engine
is running. A
warning tone
also sounds. G
Risk of accident
There is insufficient brake fluid in the fluid reservoir.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
X Consult a qualified specialist workshop.
X Observe the additional messages in the multi-function display
(Y page 211).
Do not top up the brake fluid. This will not rectify the fault. ;
The yellow
engine diagnos-
tics warning
lamp lights up
while the engine
is running. Vehicles with a diesel engine: the fuel tank has been run dry.
X
Start the engine three to four times after refuelling.
Emergency running mode is cancelled. The vehicle need not be
checked. ;
The yellow
engine diagnos-
tics warning
lamp lights up
while the engine
is running. There may be a fault, for example:
R
in the engine management
R in the ignition system
R in the exhaust system
R in the ignition system (for vehicles with petrol engines)
The emission limit values may be exceeded and the engine can
run in emergency mode.
X Have the vehicle checked as soon as possible at a qualified
specialist workshop. h
The yellow tyre
pressure moni-
tor* warning
lamp is on. G
Risk of accident
The tyre pressure monitor* has detected a sudden or significant
pressure loss in at least one of the tyres.
X Stop the vehicle without making any sudden steering or braking
manoeuvres. Pay attention to traffic conditions as you do so.
X Observe the additional messages in the multi-function display
(Y page 211).
The warning light will go out after the flat tyre has been changed
and you have been driving for a few minutes. Troubleshooting
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Problem
Possible causes/consequences and
X XSolutions 7
The red seat belt
warning lamp
lights up for 6
seconds after
the engine is
started 34
. The seat belt warning lamp reminds the driver and front passenger
to fasten their seat belts.
X
Fasten your seat belt (Y page 75).7
After the engine
starts, a warning
tone sounds for
up to 6 sec-
onds34
. G
Risk of injury
The driver's seat belt is not fastened.
X Fasten your seat belt (Y page 75).
The warning tone ceases. 7
The red seat belt
warning lamp
lights up after
the engine
starts, as soon
as the driver's
door or the
front-passenger
door is closed. G
Risk of injury
The driver or front passenger has not fastened their seat belt.
X Fasten your seat belt (Y page 75).
The warning lamp goes out. G
Risk of injury
There are objects on the front-passenger seat.
X Remove the objects from the front-passenger seat and stow
them safely.
The warning lamp goes out. 7
The red seat belt
warning lamp
flashes and an
intermittent
audible warning
sounds. G
Risk of injury
The driver or front passenger has not fastened their seat belt. At
the same time, you are driving faster than 25 km/ho r have briefly
driven faster than 25 km/h.
X Fasten your seat belt (Y page 75).
The warning lamp goes out and the intermittent audible warning
ceases. G
Risk of injury
There are objects on the front-passenger seat. At the same time,
you are driving faster than 25 km/h or have briefly driven faster
than 25 km/h.
X Remove the objects from the front-passenger seat and stow
them safely.
The warning lamp goes out and the intermittent audible warning
ceases. 34
Only for certain countries. 238
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Problem
Possible causes/consequences and
X
X Solutions The yellow reserve fuel
warning lamp lights up
while the engine is run-
ning. The fuel level has fallen below the reserve range. The operation of
the auxiliary heating* can no longer be guaranteed.
X
Refuel at the nearest filling station. Warning tones
Problem
Possible causes/consequences and
X
X Solutions The anti-theft warning
alarm* is triggered. You have opened the vehicle with the anti-theft alarm system still
activated*.
X
Switch off the alarm (Y page 54). You hear a warning
tone. A message appears in the multi-function display.
X
See the explanations for the display message (Y page 211). You are driving with the parking brake applied.
X
Release the parking brake. The lights are still switched on when you leave the vehicle.
X
Turn the light switch to $orÃ.
or
X If the rear foglamp is switched on: press the light switch in to
the stop. G
Risk of injury
The driver or front passenger has not fastened their seat belt.
X Fasten your seat belt (Y page 75). Troubleshooting
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Accident
Problem
Possible causes/consequences and
X XSolutions Fuel is leaking from the
vehicle.
G
Risk of fire
The fuel line or the fuel tank has been damaged. The leaking fuel
creates a risk of fire or explosion.
X Switch off the ignition immediately.
X Remove the ignition key.
Do not restart the engine under any circumstances. The leaking
fuel creates a risk of fire or explosion.
X Consult a qualified specialist workshop. You are unable to
determine the extent of
the damage.
X
Consult a qualified specialist workshop. You cannot detect any
damage.
X
Start the engine as normal. The NECK-PRO head
restraints/NECK-PRO
luxury head restraints*
on the driver's and the
front-passenger's seat
have been triggered. Your vehicle has been involved in a rear-end collision.
X
Reset the NECK-PRO head restraints/NECK-PRO luxury head
restraints* (Y page 252). 240
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