2019 MERCEDES-BENZ GLS SUV Owner's Manual

Display messages
Possible causes/consequences and
0050
0050Solutions Front
Front
Passenger
Passenger Air‐
Air‐
bag Disabled See
bag Disabled See
Operator's Manual Operator's Manual The front-passenger front air bag is deactivated during the journey,
although:
R an adult
or
R a person of the corresponding stature is on the front-passenger seat
If additional forces are applied to the seat, the system may interpret
the occupant's weight as lower than it actually is.
G WARNING
The front-passenger front air bag does not deploy during an accident.
There is an increased risk of injury.
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 158).
X Switch the ignition off.
X Have the occupant on the front-passenger seat get out of the vehi-
cle.
X Keep the seat unoccupied, close the front-passenger door and
switch on the ignition.
X Observe the PASSENGER AIR BAG indicator lamps in the center
console and the multifunction display and check the following:
Seat unoccupied and ignition switched on:
R a self-diagnosis is carried out. The PASSENGER AIR BAG OFF and
PASSENGER AIR BAG ON indicator lamps must light up simulta-
neously for approximately six seconds
R the PASSENGER AIR BAG OFF indicator lamp must then light up
and remain lit after the self-diagnosis. If the indicator lamp is on, OCS (vehicle Occupant Classification System) has deactivated
the front-passenger front air bag (Y page 52)
R the Front Passenger Airbag Enabled See Operator's
Front Passenger Airbag Enabled See Operator's
Manual Manual orFront Passenger Airbag Disabled See Opera‐
Front Passenger Airbag Disabled See Opera‐
tor's
tor's Manual
Manual display messages must not be shown on the mul-
tifunction display
X Wait for a period of at least 60 seconds until the necessary system
checks have been completed.
X Make sure that the display messages do not appear in the multi-
function display.
If these conditions are fulfilled, the front-passenger seat can be occu-
pied again. Whether the PASSENGER AIR BAG OFF or ON indicator
lamp remains lit or goes out depends on how OCS classifies the occu-
pant.
If the conditions are not fulfilled, the system is not operating correctly.
X Visit a qualified specialist workshop immediately.
For further information about the Occupant Classification System, see (Y page 52). Display
messages
255On-board computer and displays Z

Display messages
Possible causes/consequences and
0050
0050Solutions Front
Front
Passenger
Passenger Air‐
Air‐
bag Enabled See
bag Enabled See
Operator's Manual Operator's Manual The front-passenger front air bag is enabled during the journey,
although:
R a child, a small adult or an object weighing less than the system's
weight threshold is located on the front-passenger seat
or
R the front-passenger seat is unoccupied
The system may detect objects or forces applying additional weight on
the seat.
G WARNING
The front-passenger front air bag may deploy unintentionally.
There is an increased risk of injury.
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 158).
X Switch the ignition off.
X Open the front-passenger door.
X Remove the child and the child restraint system from the front-
passenger seat.
X Make sure that there are no objects on the seat adding to the
weight.
The system might otherwise detect the additional weight and inter-
pret the seat occupant's weight as greater than it actually is.
X Keep the seat unoccupied, close the front-passenger door and
switch on the ignition.
X Observe the PASSENGER AIR BAG indicator lamps in the center
console and the multifunction display and check the following:
Seat unoccupied and ignition switched on:
R a self-diagnosis is carried out. The PASSENGER AIR BAG OFF and
PASSENGER AIR BAG ON indicator lamps must light up simulta-
neously for approximately six seconds
R the PASSENGER AIR BAG OFF indicator lamp must then light up
and remain lit after the self-diagnosis. If the indicator lamp is on, OCS has deactivated the front-passenger front air bag
(Y page 52)
R the Front Passenger Airbag Enabled See Operator's
Front Passenger Airbag Enabled See Operator's
Manual Manual orFront Passenger Airbag Disabled See Opera‐
Front Passenger Airbag Disabled See Opera‐
tor's
tor's Manual
Manual display messages must not be shown on the mul-
tifunction display
X Wait for a period of at least 60 seconds until the necessary system
checks have been completed.
X Make sure that the display messages do not appear in the multi-
function display.
If these conditions are fulfilled, the front-passenger seat can be occu-
pied again. Whether the PASSENGER AIR BAG OFF or ON indicator
lamp remains lit or goes out depends on how OCS classifies the occu- pant.
If the conditions are not fulfilled, the system is not operating correctly. 256
Display
messagesOn-board computer and displays

Display messages
Possible causes/consequences and
0050
0050Solutions X
Visit a qualified specialist workshop immediately.
For further information about the Occupant Classification System, see (Y page 52). Lights
i Vehicles with LED bulbs in the light clusters:
The display message for the corresponding lamp only appears when all of the LEDs in the lamp
have failed. Display messages
Possible causes/consequences and
0050
0050Solutions 0049
Example: Check Left
Check Left
Low Beam
Low Beam The corresponding bulb is faulty.
X Visit a qualified specialist workshop.
or X Check whether you are permitted to replace the bulb yourself
(Y page 120). 0049
Active Headlamps Active Headlamps
Inoperative Inoperative The active light function is faulty.
X Visit a qualified specialist workshop. 0049
Intell. Light Sys‐ Intell. Light Sys‐
tem Inoperative tem Inoperative The Intelligent Light System is faulty. The lights remain available with-
out the Intelligent Light System.
X Visit a qualified specialist workshop. 0049
Malfunction See Malfunction See
Operator's Manual Operator's Manual The exterior lighting is malfunctioning.
X Visit a qualified specialist workshop. Vehicles with trailer tow hitch: a fuse may have blown.
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 158).
X Check the fuses (Y page 349).
X If necessary, replace the blown fuse. Observe the warning notes.
If the multifunction display still shows the display message:
X Visit a qualified specialist workshop. 0049
Malfunction See Malfunction See
Operator's Manual Operator's Manual The exterior lighting is malfunctioning.
X Visit a qualified specialist workshop. 0049
Auto Auto
Headlamps
Headlamps Inop‐
Inop‐
erative
erative The light sensor is defective.
X Visit a qualified specialist workshop. Display
messages
257On-board computer and displays Z

Display messages
Possible causes/consequences and
0050
0050Solutions 0049
Switch Off Lights Switch Off Lights You leave the vehicle and the lights are switched on. A warning tone
also sounds.
X Turn the light switch to the 0058position. 0049
Switch On Headlamps Switch On Headlamps You are driving with low-beam headlamps switched off.
X Turn the light switch to the 0058or0058 position. Adaptive Highbeam
Adaptive Highbeam
Assist Currently Assist Currently
Unavailable See Unavailable See
Operator's Manual Operator's Manual Adaptive Highbeam 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
X Clean the windshield.
If the system detects that the camera is fully operational, the Adap‐
Adap‐
tive Highbeam Assist Now Available
tive Highbeam Assist Now Available message is displayed.
Adaptive Highbeam Assist is operational again. Adaptive Highbeam
Adaptive Highbeam
Assist Inoperative
Assist Inoperative Adaptive Highbeam Assist is faulty.
X
Visit a qualified specialist workshop. Engine
Display messages
Possible causes/consequences and
0050 0050Solutions 00BD
Check Check
Coolant
Coolant Level Level
See Operator's Man‐
See Operator's Man‐
ual ual The coolant level is too low.
! Avoid longer journeys when there is insufficient coolant in the
engine cooling system. You could otherwise damage the engine.
X Add coolant, observing the warning notes before doing so
(Y page 324).
If you have to add coolant frequently:
X Contact a qualified specialist workshop and have the engine cooling
system checked. 00AC The fan motor is defective.
X At coolant temperatures below 248 ‡(120 †), drive to the nearest
qualified specialist workshop.
X Avoid heavy loads on the engine as you do so, e.g. driving in moun-
tainous terrain and stop-and-go traffic. 258
Display messagesOn-board computer and displays

Display messages
Possible causes/consequences and
0050
0050Solutions 00AC
Coolant Too Hot Coolant Too Hot
Stop Vehicle Turn Stop Vehicle Turn
Engine Off Engine Off The coolant is too hot.
A warning tone also sounds.
G WARNING
Do not drive when your engine is overheated. This can cause some
fluids which may have leaked into the engine compartment to catch
fire.
Steam from 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, pay-
ing attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 158).
X Wait until the engine has cooled down.
X Make sure that the 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 gauge.
If the temperature increases again: X Visit a qualified specialist workshop immediately.
Under normal operating conditions and with the specified coolant
level, the coolant temperature may rise to 248 ‡ (120 †). 003D
See Operator's Man‐ See Operator's Man‐
ual ual The battery is not being charged.
A warning tone also sounds.
Possible causes are:
R a defective alternator
R a torn poly-V-belt
R a malfunction in the electronics
! Do not drive any further. Otherwise the engine may overheat.
X Pull over and stop the vehicle safely and switch off the engine, pay-
ing attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 158).
X Consult a qualified specialist workshop. Display
messages
259On-board computer and displays Z

Display messages
Possible causes/consequences and
0050
0050Solutions 003D
Stop Vehicle See Stop Vehicle See
Operator's Manual Operator's Manual The battery is no longer being charged and the condition of charge is
too low.
A warning tone also sounds.
X Pull over and stop the vehicle safely and switch off the engine, pay-
ing attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 158).
X Observe the instructions in the 003DSee Operator's Manual
See Operator's Manual
display message.
X Consult a qualified specialist workshop. 00B2
Check Check
Engine
Engine Oil
OilAt
At
Next Refueling
Next Refueling The engine oil level has dropped to the minimum level.
A warning tone also sounds.
! Avoid longer journeys when there is insufficient engine oil. You
could otherwise damage the engine.
X Check the oil level when next refueling, at the latest (Y page 323).
X If necessary, add engine oil (Y page 323).
If the engine oil needs topping up more often: X Contact a qualified specialist workshop and have the engine
checked.
Information on approved engine oils can be obtained from any quali-
fied specialist workshop or on the Internet at http://bevo.mercedes- benz.com. 00B2
Check Engine Oil Check Engine Oil
Level (Add 1 quart) Level (Add 1 quart) Mercedes-AMG vehicles: the engine oil level is too low.
! Avoid longer journeys when there is insufficient engine oil. You
could otherwise damage the engine.
X Check the oil level when next refueling, at the latest (Y page 323).
X If necessary, add engine oil (Y page 323).
If the engine oil needs topping up more often: X Contact a qualified specialist workshop and have the engine
checked.
Information on approved engine oils can be obtained from any quali-
fied specialist workshop or on the Internet at http://bevo.mercedes- benz.com. 00B2
Engine Oil Level Engine Oil Level
Low Stop Vehicle Low Stop Vehicle
Turn Engine Off Turn Engine Off Mercedes-AMG vehicles: the engine oil level is too low.
There is a risk of engine damage.
X Pull over and stop the vehicle safely and switch off the engine, pay-
ing attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 158).
X Check the engine oil level (Y page 323).
X If necessary, add engine oil (Y page 323).00B6
Fuel Level Low Fuel Level Low The fuel level has dropped into the reserve range.
X Refuel at the nearest gas station. 260
Display
messagesOn-board computer and displays

Display messages
Possible causes/consequences and
0050
0050Solutions 00A8 There is only a very small amount of fuel in the fuel tank.
X Refuel at the nearest gas station without fail. 00B6
Gas Cap Loose Gas Cap Loose 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. Driving systems
Display messages
Possible causes/consequences and
0050 0050Solutions 00AD
Attention Assist: Attention Assist:
Take a Break! Take a Break! Based on certain criteria, ATTENTION ASSIST has detected fatigue or
a lack of concentration on the part of the driver. 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. 00AD
Attention Assist Attention Assist
Inoperative Inoperative ATTENTION ASSIST is inoperative.
X Visit a qualified specialist workshop. 00C4
Drive More Slowly 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 driving too fast with a trailer or 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 Off-Road Engineering package (Y page 180)
R Vehicles with the AIRMATIC package (Y page 187)
X Observe the notes on towing a trailer (Y page 222).00C4
Compressor Is Cool‐ Compressor Is Cool‐
ing ing You have selected a higher vehicle level. The compressor first needs
to cool down because of frequent level changes.
X Drive in a manner appropriate for the current vehicle level.
X Make sure that there is sufficient ground clearance.
X Allow the compressor to cool down.
When the compressor has cooled down, the display message dis-
appears. The vehicle then continues rising to the selected level. Display
messages
261On-board computer and displays Z

Display messages
Possible causes/consequences and
0050
0050Solutions 00C4
Malfunction
Malfunction AIRMATIC is malfunctioning.
X
Drive as appropriate for the current vehicle level, but do not exceed
50 mph (80 km/h).
X Make sure that there is sufficient ground clearance.
X Visit a qualified specialist workshop. 00C4
Max. Speed 12 mph Max. Speed 12 mph You are exceeding the speed permissible for the selected off-road
level.
In addition, the vehicle level display appears above the display mes-
sage, 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 move-
ments.
X Do not exceed 12 mph (20 km/h) until the vehicle has reached off-
road level 2. 00C4
Raising Raising
Max.
Max.Speed
Speed
12 mph
12 mph The vehicle is being adjusted to off-road level 3.
In addition, the vehicle level display appears above the display mes-
sage.
The display message refers to the maximum speed permissible
(depending on the model type) for off-road level 3.
X Do not drive at speeds above 12 mph (20 km/h). 0093
Lowering Lowering
Max.
Max.
Speed 12 mph
Speed 12 mph The vehicle is being lowered from off-road level 3 to off-road level 2.
In addition, the vehicle level display appears above the display mes-
sage.
The display message refers to the maximum speed permissible
(depending on the model type) for off-road level 3.
X Do not exceed 12 mph (20 km/h)until the vehicle has reached off-
road level 2. ACTIVE ACTIVE
CURVE
CURVE SYSTEM
SYSTEM
Malfunction
Malfunction The ACTIVE CURVE SYSTEM is faulty. The vehicle's handling charac-
teristics may be affected.
X Do not drive at speeds above 50 mph (80 km/h).
X Visit a qualified specialist workshop. 262
Display messagesOn-board computer and displays