2013 MERCEDES-BENZ GL-Class Owner's Manual

Engine
Display messages Possible causes/consequences and
0001 Solutions
000F
Check Coolant
Level See
Operator's Manual The coolant level is too low.
!
Avoid making long journeys with too little coolant in the engine
cooling system. The engine will otherwise be damaged.
X Add coolant, observing the warning notes before doing so
(Y page 369).
X If coolant needs to be added more often than usual, have the
engine coolant system checked at a qualified specialist
workshop. 000E The fan motor is faulty.
X
At coolant temperatures below 248 ‡ (120 †) drive to the
neares tqualified specialist workshop.
X Avoid subjecting the engin eto heavy loads, e.g. driving in
mountainous terrain, and stop-and-go traffic. 000E
Coolant Too Hot
Stop Vehicle Turn
Engine Off The coolant is too hot.
Aw
arning tone also sounds.
G WARNING
Do no tdrive when youre ngine is overheated. Thi scan cause some
fluids which may have leaked into the engine compartmen tto
catch fire.
Stea mfrom the overheated engine can also cause serious burns
which can occur just by opening the hood.
There is a risk of injury.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 183).
X Waitu ntil the engine has cooled down.
X Make sure tha tthe air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X Do not start the engine again until the display message goes out
and the coolant temperature is below 248 ‡ (120 †).
Otherwise, the engine could be damaged.
X Pay attention to the coolant temperature display.
X If the temperature increases again, visit a qualified specialist
workshop immediately.
Under normal operating conditions and with the specified coolant
level, the coolant temperature may rise to 248 ‡ (120 †). Display messages
303On-board computer and displays Z

Display messages Possible causes/consequences and
0001 Solutions
000B The battery is no
tbeing charged.
Aw arning tone also sounds.
Possible causes are:
R a defective alternator
R a torn poly-V-belt
R a malfunction in the electronics
X Pull ove rand stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Ope nthe hood.
X Check whether the poly-V-belt is torn.
If the poly-V-belt is torn:
! Do not continue driving. The engine could otherwise overheat.
X Consult a qualified specialist workshop.
If the poly-V-belt is not damaged:
X Visit a qualified specialist workshop. 0013
Check Engine Oil
At Next Refueling The engine oil level has dropped to the minimum level.
Aw
arning tone also sounds.
X Chec kthe oil level when next refueling, at the latest
(Y page 368).
X If necessary, add engine oil (Y page 368).
X Have the engine checked at a qualified specialist workshop if
engine oil needs to be added more often than usual.
! Avoid long journeys with too little engine oil. The engine will
otherwise be damaged.
Information on approved engine oils can be obtained from any
qualified specialist workshop or on the Internet at http://
bevo.mercedes-benz.com. 304
Display messagesOn-board computer and displays

Display messages Possible causes/consequences and
0001 Solutions
0013
Check Engine Oil
Level (Add 1 quart) AMG vehicles: the engine oil level is too low.
X
Chec kthe oil level when next refueling, at the latest
(Y page 368).
X If necessary, add engine oil (Y page 368).
X Have the engine checked at a qualified specialist workshop if
engine oil needs to be added more often than usual.
! Avoid long journeys with too little engine oil. The engine will
otherwise be damaged.
Information on approved engine oils can be obtained from any
qualified specialist workshop or on the Internet at http://
bevo.mercedes-benz.com. 0012
Fuel Level Low The fuel level has dropped into the reserve range.
X
Refuel at the nearest gas station. 000A There is only a very small amount of fuel in the fuel tank.
X
Refuel at the nearest gas station without fail. 0012
Gas Cap Loose 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.
If the fuel filler cap is not correctly closed:
X Close the fuel filler cap.
If the fuel filler cap is correctly closed:
X Visit a qualified specialist workshop. 0012
Ultra Low-sulfur
Diesel Fuel Only Vehicles with a diesel engine: the fuel level has fallen below the
reserve range.
X Refuel at the nearest gas station.
X Only use commercially available vehicular ULTRA-LOW SULFUR
HIGHWAY DIESEL FUEL (ULSD, 15ppm SULFUR MAXIMUM). 0004
Replace Air Filter Vehicles with a diesel engine: the engine air filter is dirty and must
be replaced.
X
Visit a qualified specialist workshop. 0001
Check Fuel Filter Vehicles with a diesel engine: there is water in the fuel filter. The
water must be drained off.
X
Visit a qualified specialist workshop. Display messages
305On-board computer and displays Z

Display messages Possible causes/consequences and
0001 Solutions
0002
Check
Additive See
Operator's Manual The DEF tank is almost empty.
X
Have the DE Ftank filled as soon as possible at aqualified
specialist workshop (Y page 181).0002
Remaining Starts:
16 The DE
Flevel has fallen to a minimum. You can start the engine a
further 16 times.
X Have the DEFt ank filled immediately at a qualified specialist
workshop (Y page 181).
i You can start the engine a further 16 times. If DE Fis not added,
it will then not be possible to restart the engine. Refill the DEF
tank with approximately 1 gal (3.8 l) DEF (Y page 181).Driving systems
Display messages Possible causes/consequences and
0001 Solutions
0003
Attention Assist:
Take a Break! Based on certain criteria, ATTENTION ASSIST has detected fatigue
or
alack of concentration on th epart of th edriver. A warning tone
also sounds.
X If necessary, take a break.
During long journeys, take regular breaks in good time so you get
enough rest. 0003
Attention Assist
Inoperative ATTENTION ASSIST is inoperative.
X
Visi taqualified specialist workshop. 0002
Drive More Slowly You cannot change the vehicle level. Possible causes are:
R
you are driving too fast for the selected vehicle level.
R you are towing a trailer.
R the trailer-coupling socket is being used, e.g. for a bicycle rack.
X Drive more slowly and then select the desired vehicle level
again.
R
Vehicles with the ON&OFFROA Dpackage (Y page 207)
R Vehicles with the AIRMATIC package (Y page 213)
X Observe the notes on towing a trailer (Y page 257).306
Display messagesOn-board computer and displays

Display messages Possible causes/consequences and
0001 Solutions
0002
Compressor Is
Cooling You have selected a higher vehicle level. The compressor first
needs to cool down because of frequen
tlevel changes.
X Drive in a manner appropriate for the current vehicle level.
X Make sure that there is sufficien tground clearance.
X Allow the compresso rto cool down.
When the compressor has cooled down, the display message
disappears. The vehicle then continues rising to the selected
level. 0002
Malfunction AIRMATIC is malfunctioning.
X
Drive in a manner appropriate for the current vehicle level, but
no faster than 50 mph (80 km/h).
X Make sure that there is sufficient ground clearance.
X Have the vehicle checked at a qualified specialist workshop. 0002
Max. Speed 12 mph You are exceeding the speed permissible for the selected off-road
level.
In addition, the vehicle level display appears between the vehicle
icon and the display message, and a warning tone sounds.
G WARNING
The vehicle could tip and rollover.
There is a risk of an accident.
X Adjust your driving style to the altered handling characteristics.
X Only make slight steering movements and avoid fast steering
movements.
X Do not drive faster than 12 mph (20 km/h) until off-road level 2
has been reached. ACTIVE CURVE
SYSTEM
Malfunctioning The Active Curve Syste
mis faulty. The vehicle's handling
characteristics may be affected.
X Do not drive faster than 50 mph (80 km/h).
X Have the vehicle checked at a qualified specialist workshop. Display messages
307On-board computer and displays Z

Display messages Possible causes/consequences and
0001 Solutions
ACTIVE CURVE
SYSTEM Malfunction
See Operator's
Manual The Active Curve Syste
mis faulty. The vehicle's handling
characteristics are severely impaired.Aw arning tone also sounds.
G WARNING
There is a ris kofanaccident.
X Drive on carefully.
X Adjust your driving style to the altered handling characteristics.
X Avoid sudde nacceleration in tigh tbends and fast steering
movements.
X Do not drive faster than 50 mph (80km/h).
X Visit a qualified specialist workshop immediately. 000C
Lowering
Max.
Speed 12 mph The vehicle is being lowered from off-road level
3to off-road level
2. The display message informs you of the maximum speed
permissible for off-road level 3.
X Do not drive faster than 12 mph (20 km/h) until off-road level 2
has been reached. 0013
Different. Lock
Sys. Malfunction The differential loc
kis malfunctioning.
X Do not drive faster than 50 mph (80km/h).
X Have the vehicle checked at a qualified specialist workshop. 0013
Different.
Locking
Sys. Cooling Down
Please Wait The differential lock is too hot and has been disengaged.
X
Drive on carefully.
X Allow the differential lock to cool down.
The differential lock reengages as soon as it has cooled down. LOW RANGE Stop
Apply Parking Brake Ag
earshift process has been canceled. LOW RANGE is in the
neutral position .There is no connection between the engine and
the drive wheels.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Apply the electric parking brake. Do not continue driving under
any circumstances.
X Repeatt he gearshift process. LOW RANGE
Malfunction To
Park, Apply Brake LOW RANGE is malfunctioning.
X
Do not drive faster than 50 mph (80km/h).
X When parking, secure the vehicle against rolling away
(Y page 183).
X Have the vehicle checked at a qualified specialist workshop. 308
Display messagesOn-board computer and displays

Display messages Possible causes/consequences and
0001 Solutions
LOW RANGE Max.
Speed 25 mph You have exceeded the maximum speed fo
rthe gearshift process.
X Drive more slowly.
The gear change is made. LOW RANGE Max.
Speed 40 mph You have exceeded the maximum speed for the gearshift process.
X
Drive more slowly.
The gear change is made. LOW RANGE Shift to
Position N Briefly You have reduced the vehicle speed, but the automatic
transmission is not in position
N.
X Briefly shift the automatic transmission to position N.LOW RANGE Shifting
Canceled Please
Reactivate The gearshift process has been canceled.
X
Repeatt he gearshift process. 0001
Inoperative DSR (Downhill Speed Regulation) is deactivated due to a
malfunction.
X
Have DSR checked at a qualified specialist workshop. 0001
Off The HOLD function is deactivated. The vehicle is skidding.
Aw
arning tone also sounds.
X Reactivate the HOLD function later (Y page 211).Radar Sensors
Deactivated See
Operator's Manual The radar sensor system is deactivated.
X
Switch on the radar sensor system (Y page 281). Display messages
309On-board computer and displays Z

Display messages Possible causes/consequences and
0001 Solutions
Lane Keeping
Assist Currently
Unavailable See
Operator's Manual
or
Active Lane Keeping Assist
Currently
Unavailable See
Operator's Manual Lane Keeping Assis
torActive Lane Keeping Assist is deactivated
and temporarily inoperative .Possible causes are:
R the windshield in the camera's field of vision is dirty.
R visibility is impaired due to heavy rain, snow or fog.
R there are no lane markings for a longer period.
R the lane markings are worn, dark or covered, e.g. by dirt or snow.
When the causes stated above no longer apply, the display
message disappears.
Lane Keeping Assist or Active Lane Keeping Assist is operational
again.
If the display message does not disappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 183).
X Clean the windshield. Lane Keeping
Assist
Inoperative or
Active Lane Keeping Assist
Inoperative Lane Keeping Assist or Active Lane Keeping Assist is defective.
X
Visit a qualified specialist workshop. Blind Spot Assist
Currently
Unavailable See
Operator's Manual
or
Active Blind Spot Assist
Currently
Unavailable See
Operator's Manual Blind Spot Assist or Active Blind Spot Assist is temporarily
inoperative.
You have established the electrical connection between the trailer
and your vehicle.
X
Press 000Bon the steering wheel to confirm the display
message.
Blind Spot Assist or Active Blind Spot Assist is deactivated while
towing a trailer. 310
Display messagesOn-board computer and displays