2022 MERCEDES-BENZ GLS SUV Owners Manual

Climate control
Display messages
Possible causes/consequences and P Solutions
;
inoperative See Owner's
Man. * The stationary heater is temporarily malfunctioning. 
When the vehicle is stationary on a level surface and the engine has cooled down, make up to four attempts to
switc
h on the stationary heater, waiting several minutes between each attempt. 
If the stationary heater does not switch on, consult a q
ualiNed specialist workshop.
;
inoperative Battery low * The on-board electrical system voltage is too low.
The s
tationary heater has switched itself oM. 
Drive an extended distance until the battery has reached a suPcient c
harge level again.
;
inoperative Refuel vehicle * There is too little fuel in the fuel tank. The stationary heater cannot be switched on. 
Refuel the vehicle. 454
Display messages and warning/indicator lamps

Vehicle
Display messages
Possible causes/consequences and P Solutions
Update successfully com-
pleted * Installation of the
sosw are update has been successfully completed ( page 325).
Update failed Software
remains unchanged * An error occurred during installation of the
sosw
are update ( page 325).
The previous sosware release remains in place.
Update failed * An error occurred during installation of the sosw
are update ( page 325).
Make a Mercedes me call via the overhead control panel ( page 341).
r
Vehicle is operational
Switch off ignition before
exiting * You are leaving the vehicle in a ready-to-drive state. 
Get out of the vehicle, secure it against rolling away and take the key with you. 
If you do not leave the vehicle, switch oM t
he electrical consumers, e.g. the seat heating. Otherwise, the 12!

Display messages
Possible causes/consequences and P Solutions
ï
Trailer coupling extending

Display messages
Possible causes/consequences and P Solutions 
Uncouple the coupled trailer and secure it against rolling away. 
If the ball neck has been retracted: initiat e a new swivel movement ( page 301).
The ball neck will engage vertically in the locked position and then engage beneath the bumper. 
If the ball neck has been extended: initiat
e a new swivel movement ( page 301).
The ball neck will engage beneath the bumper.
If the display message does not disappear, the trailer hitch is malfunctioning and the ball neck is not locked. 
Do not couple up the trailer. Drive on without the trailer. Note the reduced ground clearance due to the unlocked
ball nec
k. 
Consult a q
ualiNed specialist workshop.
Side running board not
retracted Observe the
excess width of the vehicle * Mercedes-Maybach vehicles: the running boards are not retracted.
= The r

unning boards can be retracted via the multimedia system only when the vehicle is stationary ( page 91).
= The running boards and the side skirt must be free of dirt, ice and snow. Otherwise, they are unable to retract. 
Clean the running boards ( pag
e 378). 
Repeat the retraction of the running boards ( pag
e 90).
If the running boards cannot be retracted again, consult a qualiNed specialist workshop. 
If the running boards are not retracted, check the excess width of the vehicle. Display messages and warning/indicator lamps
457

Display messages
Possible causes/consequences and P Solutions
^
Side running board not
extended * Mercedes-Maybach vehicles: the running boards are not extended.
= The r
unning boards extend only when the vehicle is stationary.
= The running boards and the side skirt must be free of dirt, ice and snow. Otherwise, they are unable to extend. 
Clean the running boards ( pag
e 378). 
Repeat the extension of the running boards ( pag
e 90).
If the running boards fail to extend again, consult a qualiNed specialist workshop. 
If the running boards are not extended, be particularly careful when getting in or out.
Head-up display currently
unavailable See Owner's
Manual * The head-up display is temporarily unavailable. Possible causes:
= malfunctions in t

he power supply
= signal interference 
Stop in accordance with the tr
aPc conditions and switch the vehicle oM and on again. 
If the display message still appears, consult a q
ualiNed specialist workshop.
Head-up display inoperative * The head-up display has an internal error. 
Consult a q
ualiNed specialist workshop.458
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and P Solutions
Ù
Steering malfunction
Increased physical effort
See Owner's Manual * The power steering assistance is malfunctioning. &
WARNING Risk of an accident due t o altered steering characteristics
If the power assistance of the steering fails partially or completely, you will need to use more force to steer. 
If safe steering is possible, drive on carefully. 
Visit or consult a q
ualiNed specialist workshop immediately. Ù
Steering malfunction Stop
immediately See Owner's
Manual * The steering is malfunctioning. Steering capability is
signiNcantl
y impaired. &
WARNING Risk of accident if s
teering capability is impaired
If the steering does not function as intended, the vehicle's operating safety is jeopardised. 
Pull over and stop the vehicle safely as soon as possible, paying attention to road and tr
aPc conditions. Do
not continue driving under any circumstances. 
Consult a q
ualiNed specialist workshop. Q
* At least one door is open. 
Close all doors. Display messages and warning/indicator lamps
459

Display messages
Possible causes/consequences and P Solutions
f * The bonnet is open. &
WARNING Risk of accident due t o driving with the bonnet unlocked
The bonnet may open and block your view. 
Never release the bonnet when driving. 
Before every trip, ensure that the engine bonnet is locked. 
Stop the vehicle immediately in accordance with the tr
aPc conditions. 
Close the bonnet.
e * The tailgate is open. &
DANGER Risk of poisoning fr
om exhaust gases
Combustion engines emit poisonous exhaust gases, such as carbon monoxide. Exhaust gases can enter the vehi-
cle int
erior if the tailgate is open when the engine is running, especially if the vehicle is in motion. 
Always switch oM t
he engine before opening the tailgate. 
Never drive with the tailgate open. 
Close the tailgate.
LOW RANGE only when
vehicle stationary * One or more
shising conditions ha
ve not been met. 
Stop the vehicle. 460
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and P Solutions 
Engage neutral i. 
Repeat the gear change.
LOW RANGE Shift to posi-
tion N briefly * One or more
shising conditions ha ve not been met. 
Engage neutral i. 
Repeat the gear change.
LOW RANGE Not in drive
program "Sport" * You will not be able to select the LOW RANGE
oM-r
oad gear if the drive program C or B is switched on.
The drive program therefore automatically switches to A. 
Select the LOW RANGE oM-r
oad gear ( page 216).
LOW RANGE Malfunction
To park, apply parking
brake * The transfer case is malfunctioning. 
Do not shis t
he transfer case! 
Use the electric parking brake to secure the vehicle against rolling away. 
Consult a q
ualiNed specialist workshop.
LOW RANGE Shifting can-
celled Please reactivate * The transfer case did not perform the gear change. 
Repeat the gear change. 
Ensure that all shising conditions ar
e met ( page 216).
LOW RANGE Malfunction * The transfer case is malfunctioning. 
Do not shis t
he transfer case! Display messages and warning/indicator lamps
461