2021 MERCEDES-BENZ GLS SUV warning

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V
ehicle
ehicle Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/conseq uences and
uences andM
MSolutions
Solutions
Update successfully com-
pleted *I
nstallation of the soTware update has been successfully comple ted (/ page 324).
Update failed Software
remains unchanged *A
n er ror occur red during ins tallation of the soTware update (/ page 324).
The pr evious soTware release remains in place.
Update failed *An er ror occur red during ins tallation of the soTware update (/ page 324).
Make a Mercedes me call via theove rhead control panel (/ page 340).
d
Vehicle is operational
Switch off ignition before
exiting *Y
ou are leaving theve hicle in a ready-to-drive state. #
Get out of theve hicle, secure it against rolling away and take theke y with you. #
Ifyo u do not lea vetheve hicle, switch o. the electrical consumers, e.g. the seat heating. Otherwise, the 12‑V bat-
te ry may dischar geand starting the engine may be possible only with the help of a second battery (jump start).
ï
Operation only possible in
transmission position P *T
he ball neck will not swivel because transmission position h,kor neutral iis selected. #
Depress the brake pedal. #
Engage park position j.452 452
Display messages and
warning/indicator lamps

Displa
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es Possible causes/conseq
ossible causes/consequences and uences andM
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Solutions
ï
Trailer coupling extending… *T
he ball neck is retracting/extending.
Do not attem pttospeed up, slow down or initiate the swivel mo vement using your hand, foot or other aids. During the
swivel mo vement, do not couple a trailer.
When the ball neck has reached an operational position, the display message will disappear.
ï Check trailer hitch
lock (white display message) *T
he trailer hitch is not operational during a jou rney with a trailer. &
W WARNING
ARNING Risk of an accident if the ball neck is not loc ked
The trailer may become de tach ed. #
Stop theve hicle immediately in accordance with the tra1c conditions. Do not continue driving. #
Uncouple the trailer and secure it against rolling away. #
Initiate a new swivelling procedu reand do not re-couple the trailer until the display message disappears. #
Initiate a new swivel mo vement (/ page 299). #
When the display message disappears, couple up the trailer and drive on.
If th e display message does not disappear, the trailer hitch is malfunctioning and the ball neck is not loc ked. #
Do not couple up the trailer. Drive on without the trailer. No tethere duced ground clearance due tothe unloc ked
ball nec k. #
Consult a quali/ed specialist workshop.
*W hen theve hicle is stationary with a coupled trailer, the trailer hitch is not operational. Display messages and
warning/indicator lamps
453
453

Displa
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Solutions #
Uncouple the coupled trailer and secure it against rolling away. #
If t
If the ball nec
he ball nec k has been re
k has been retr
tract
act ed:
ed: initiate a new swi vel mo vement (/ page 299).
The ball neck will engage vertically in the loc ked position and then engage beneath the bumper. #
If t
If the ball nec
he ball nec k has been e
k has been e xt
xtended:
ended: initiate a new swivel mo vement (/ page 299).
The ball neck will engage beneath the bumper.
If th e display message does not disappear, the trailer hitch is malfunctioning and the ball neck is not loc ked. #
Do not couple up the trailer. Drive on without the trailer. No tethere duced ground clearance due tothe unloc ked
ball nec k. #
Consult a quali/ed specialist workshop.
Side running board not
retracted Observe the
excess width of the vehicle *M
ercedes-Maybach vehicles: theru nning boa rds are not retracted.
R The running boa rds can be retracted via the multimedia system only when theve hicle is stationary (/ page 90).
R The running boa rds and the side skirt must be free of dirt, ice and sno w.Otherwise, they are unable toretract. #
Clean theru nning boa rds (/ page 376). #
Repeat there traction of theru nning boa rds (/ page 89).
If th eru nning boa rds cann otbe retracted again, consult a quali/ed specialistwo rkshop. #
Ifth eru nning boa rds are not retracted, check theex cess width of theve hicle. 454 454
Displ
aymessages and warning/indicator lamps

Displa
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ossible causes/consequences and uences andM
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Solutions
y
Side running board not
extended *M
ercedes-Maybach vehicles: theru nning boa rds are not extended.
R The running boa rdsex tend only when theve hicle is stationar y.
R The running boa rds and the side skirt must be free of dirt, ice and sno w.Otherwise, they are unable toextend. #
Clean theru nning boa rds (/ page 376). #
Repeat theex tension of theru nning boa rds (/ page 89).
If th eru nning boa rdsfa ilto extend again, consult a quali/ed specialist workshop. #
Ifth eru nning boa rds are not extended, be particular lycareful when getting in or out.
Head-up display currently
unavailable See Owner's
Manual *T
he head-up displ ayistemp orarily una vailable. Possible causes:
R malfunctions in the po wer supply
R signal inter fere nce #
Stop in accordance with the tra1c conditions and switch theve hicle o. and on again. #
Ifth e display message still appears, consult a quali/ed specialist workshop.
Head-up display inoperative *The head-up displ ayhas an internal er ror. #
Consult a quali/ed specialist workshop. Displ
aymessages and warning/indicator lamps
455 455

Displa
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ossible causes/consequences and uences andM
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Ù
Steering malfunction
Increased physical effort
See Owner's Manual *T
he po wer steering assistance is malfunctioning. &
W WARNING
ARNING Risk of an accident due toaltered steering characteristics
If th e po wer assistance of the steering fails partially or comple tely,yo u will need touse more forc eto stee r. #
If safe steering is possible, drive on carefull y. #
Visit or consult a quali/ed specialist workshop immediatel y.Ù
Steering malfunction Stop
immediately See Owner's
Manual *T
he steering is malfunctioning. Steering capability is signi/cantly impaired. &
W WARNING
ARNING Risk of accident if steering capability is impaired
If th e steering does not function as intended, theve hicle's operating saf ety is jeopardised. #
Pull over and stop theve hicle safely as soon as possible, paying attention toroad and tra1c conditions. Do
not continue driving under any circums tances. #
Consult a quali/ed specialis two rkshop. C
*A
t least one door is open. #
Close all doors. 456
456
Display messages and
warning/indicator lamps

Displa
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es Possible causes/conseq
ossible causes/consequences and uences andM
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Solutions
? *T
he bonn etis open. &
W
WARNING
ARNING Risk of accident due todriving with the bonnet unloc ked
The bonnet may open and blo ckyour vie w. #
Neverre lease the bonnet when driving. #
Before every trip, ensure that the engine bonnet is loc ked. #
Stop theve hicle immediately in accordance with the tra1c conditions. #
Close the bonnet.
A *T
hetailgate is open. &
D
DAN
AN GER
GER Risk of poisoning from exhaust gases
Combustion engines emit poisonous exhaust gases, such as carbon monoxide. Exhaust gases can enter theve hi-
cle interior if theta ilgate is open when theve hicle is running, especially if theve hicle is in motion. #
Always switch o. theve hicle before opening theta ilgate. #
Never drive with theta ilgate open. #
Close theta ilgate.
LOW RANGE only when
vehicle stationary *O
ne or more shiTing conditions ha venot been met. #
Stop theve hicle. Displ
aymessages and warning/indicator lamps
457 457

Displa
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es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
Engage neutral i. #
Repeat thege ar change.
LOW RANGE Shift to posi-
tion N briefly *O
ne or more shiTing conditions ha venot been met. #
Engage neutral i. #
Repeat thege ar change.
LOW RANGE Not in drive
program "Sport" *Y
ou will not be able toselect theLO W RANGE o.- road gear if the drive prog ram C orB is switched on.
The drive prog ram therefore automatically switches toA . #
Select theLO W RANGE o.- road gear (/ page 214).
LOW RANGE Malfunction
To park, apply parking
brake *T
he transfer case is malfunctioning. #
Do not shiT the transfer case! #
Use the electric parking brake tosecure theve hicle against rollingaway. #
Consult a quali/ed specialist workshop.
LOW RANGE Shifting can-
celled Please reactivate *T
he transfer case did not per form thege ar change. #
Repeat thege ar change. #
Ensu rethat all shiTing conditions are met (/ page 214).
LOW RANGE Malfunction *The transfer case is malfunctioning. #
Do not shiT the transfer case! 458 458
Display messages and
warning/indicator lamps

Displa
Displa
y messag
y messag es P
es Possible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
Use the electric parking brake tosecure theve hicle against rollingaway. #
Consult a quali/ed specialist workshop.
LOW RANGE Stop Apply
parking brake *T
he transfer case is malfunctioning. #
Stop theve hicle in accordance with the tra1c conditions. #
Apply the electric parking brake. #
Where necessar y,also secure theve hicle against rolling away. #
Engage park position j.
LOW RANGE Max. speed
10 km/h *T
he maximum speed of 10 km/h forth ege ar change has been exceeded. #
Drive more slo wly. #
Repeat thege ar change.
LOW RANGE Max. speed
40 km/h *T
he maximum speed of 40 km/h forth ege ar change has been exceeded. #
Drive more slo wly. #
Todeactivate thege ar change, press the LLO O W RAN
W RAN GE
GEbutton again. #
Repeat thege ar change.
Gearbox protection Limit
30 km/h Switch off LOW
RANGE *T
he oil temp erature in the transfer case is too high. #
Inthe on-road position, shiT toHIGH RANGE. Display messa
ges and warning/indicator lamps
459 459