2019 MERCEDES-BENZ GLS SUV steering

Display messages
Possible causes/consequences and M
MSolutions #
Ifth e display message does not disappear, stop theve hicle in accordance with the tra ffic conditions and restart
th e engine.
Active Brake Assist Func-
tions limited See Owner's
Manual *
Ve hicles with Driving Assistance Package: Active Brake Assi stwith cross-traf fic function, Evasi veSteering
Assist or PRE‑SAFE ®
PLUS is malfunctioning.
Ve hicles without Driving Assistance Package: Active Brake Assi stis malfunctioning. #
Consult a qualified specialist workshop.
PRE-SAFE inoperative See
Owner's Manual *
PRE‑SAFE ®
functions are malfunctioning. #
Consult a qualified specialist workshop.
PRE-SAFE impulse side
inoperative See Owner's
Manual *
PRE-SAFE ®
Impulse Side is malfunctioning or inoperative af ter having already been triggered. #
Consult a qualified specialist workshop.
Mercedes me connect
Services limited See Own-
er's Manual *S
ervice limited.
At least one of the main functions of the Mercedes me connect sy stem is malfunctioning. #
Obser vethe no tes on the diagnostics connection (/ page 30). #
Consult a qualified specialist workshop. 624
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions #
Reduce theve hicle speed considerably before taking a cur ve. #
Avoid sudden steering mo vements. #
Continue driving careful lyat maximum 80 km/h. #
If possible, stop theve hicle when safe todo so in the tra ffic conditions and switch the ignition off and on again. #
Visit a qualified workshop.
Please reduce speed *Y
ou are driving toofast forth e selected vehicle le vel. #
Drive more slowly and then select the desired vehicle le vel again.
Yo u are driving tooqu ickly with a trailer or the trailer tow hit chsoc ket is being used, e.g. for a rear-moun ted cycle
ra ck. #
Read the information on towing a trailer.
Active Steering Assist cur-
rently unavailable See Own-
er's Manual *A
ctive Steering Assist is temp orarily una vailable.
The ambient conditions are outside the sy stem limits (/ page 253). #
Drive on.
As soon as the ambient conditions are within the sy stem limits, the sy stem will become available again. #
If necessar y,clean the windscreen in the camera's field of vision. #
Check the tyre pressure if necessar y. Displ
aymessa ges and warning/indicator lamps 627

Display messages
Possible causes/consequences and M
MSolutions
Active Steering Assist inop-
erative *A
ctive Steering Assist is malfunctioning. Active Dis tance Assi stDISTRONIC remains available. #
Consult a qualified specialist workshop.
Ø *A
ctive Steering Assist has reached the sy stem limits(/ page 253).
Yo u ha venot steered independently for a considerable period of time. #
Take ove rth esteering and drive on in accordance with the traf fic conditions.
Beginning emergency stop *Y
our hands are not on thesteering wheel. Emer gency stop is initiated. #
Put your hands back on thesteering wheel.
Emer gency stop can be inter rupte dby means of thefo llowing actions:
R steering
R depressing the brake or accelera tor pedal
R pressing a steering-wheel button or touch cont rol
R activating or deactivating Active Dis tance Assi stDISTRONIC Fault Stop
*T
heACTIVE BODY CONTROL sy stem's hydraulics are malfunctioning seriously. The sy stem is deactivated. #
Stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions. Do not continue
driving under any circums tances. #
Consult a qualified specialist workshop. 628
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
Active Lane Keeping Assist
currently unavailable See
Owner's Manual *A
ctive Lane Keeping Assist is temp orarily una vailable.
The ambient conditions are outside the sy stem limits (/ page 309). #
Drive on.
As soon as the ambient conditions are within the sy stem limits, the sy stem will become available again.
Active Lane Keeping Assist
inoperative *A
ctive Lane Keeping Assist is malfunctioning. #
Consult a qualified specialist workshop.
Á Compressor is cooling *D
uetofrequent le velch anges within a short space of time, the compressor firs t needs tocool down in order toset
th e selected vehicle le vel. #
Drive on in a manner appropriate forth e cur rent le vel. Make sure that there is suf ficient ground clearance.
When the compressor has cooled down, theve hicle will continue rising tothe selected vehicle le vel.
Active Stop-and-Go Assist
currently unavailable see
Owner's Manual *T
heActive Traf fic Jam Assi stistemp orarily not available. The Active Dis tance Assi stDISTRONIC and theAc tive
St eering Assist are still available.
The ambient conditions are outside the sy stem limits. (/ page247) #
Drive on.
As soon as the ambient conditions are within the sy stem limits, the sy stem will become available again.
Active Stop-and-Go Assist
inoperative See Owner's
Manual *T
heActive Traf fic Jam Assi stis malfunctioning.
The Active Traf fic Jam Assi stis deactivated. The Active Dis tance Assi stDISTRONIC and theAc tive Steering Assist
are still available. #
Consult a qualified specialist workshop. Display messages and
warning/indicator lamps 629

Display messages
Possible causes/consequences and M
MSolutions &
WARNING Risk of an accident due toinsuf ficient tyre pressure
Ty res with insuf ficient tyre pressure pose thefo llowing risks:
R The tyres may bur st, especially as the load and vehicle speed increase.
R The tyres may wearexc essively and/or une venly, which may greatly impair tyre traction.
R ‑ The driving characteristics, steering and braking may be greatly impaired.
Yo u could then lose control of theve hicle. #
Obser vethere commended tyre pressures. #
Adjust the tyre pressure if necessar y. #
Stop theve hicle, paying attention toroad and traf fic conditions. #
Check the tyre pressure (/ page571) and the tyres. #
When the tyre pressure is cor rect, restart the tyre pressure loss warning sy stem (/ page578).
h
Tyre press. mo nitor cur-
rently unavailable *T
here is inter fere nce from a po werful radio signal source. As a result, no signals from the tyre pressure sensors are
re cei ved. The tyre pressure monitoring sy stem is temp orarily una vailable. #
Drive on.
The tyre pressure monitoring sy stem restarts automatically as soon as the cause has been rectified. 650
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
h Tyre press. monitor inoper-
ative *T
he tyre pressure monitoring sy stem is faulty. &
WARNING Thereis a risk of an accident if the tyre pressure monitoring sy stem is malfunctioning
If th e tyre pressure monitoring sy stem is malfunctioning, it is not able toissue a warning if there is pressure
loss in one or more of the tyres.
Ty res with insuf ficient tyre pressure ma y,forex ample, af fect theve hicle's handling characteristics, steering and
braking. ‑ #
Have the tyre pressure monitoring sy stem checked at a qualified specialist workshop. #
Consult a qualified specialist workshop.
Check tyre pressures then
restart Run Flat Indicator *T
he tyre pressure loss warning sy stem generated a displ aymessa geand has not been restar ted since. #
When the tyre pressure is cor rect, restart the tyre pressure loss warning sy stem (/ page578).
h
Tyre press. mo nitor inoper-
ative No wheel sensors *T
he wheels fitted do not ha vesuitable tyre pressure sensors. The tyre pressure monitoring sy stem is deactivated. #
Fit wheels with suitable tyre pressure sensors. Display messages and
warning/indicator lamps 651

Display messages
Possible causes/consequences and M
MSolutions
h Wheel sensor(s) missing *T
he tyre pressure sensor signal is missing from one or more tyre(s). The pressure of the af fected tyre is not dis‐
pl ay ed. #
Have thefa ulty tyre pressure sensor replaced at a qualified specialist workshop.
Run Flat Indicator inopera-
tive *T
he tyre pressure loss warning sy stem is malfunctioning. #
Consult a qualified specialist workshop.
h Check tyre(s) *T
he tyre pressure in one or more tyres has dropped significantl y.The wheel position is displa yed. &
WARNING Risk of an accident due toinsuf ficient tyre pressure
Ty res with insuf ficient tyre pressure pose thefo llowing risks:
R The tyres may bur st, especially as the load and vehicle speed increase.
R The tyres may wearexc essively and/or une venly, which may greatly impair tyre traction.
R ‑ The driving characteristics, steering and braking may be greatly impaired.
Yo u could then lose control of theve hicle. #
Obser vethere commended tyre pressures. #
Adjust the tyre pressure if necessar y. #
Stop theve hicle, paying attention toroad and traf fic conditions. #
Check the tyre pressure (/ page571) and the tyres. 652
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
h Rectify tyre pressure *T
he tyre pressure is too low in at least one of the tyres, or the tyre pressure dif fere nce between the wheels is too
great. #
Check the tyre pressure and add air, if necessar y. #
When the tyre pressure is cor rect, restart the tyre pressure monitoring sy stem (/ page574).
h
Warning tyre defect *T
he tyre pressure in one or more tyres has dropped suddenly. The wheel position is displa yed. &
WARNING Risk of an accident from driving wi thaflat tyre
Flat tyres are dangerous in thefo llowing ways:
R The tyres can overheat and cause a fire.
R ‑ The driving characteristics, steering and braking may be greatly impaired.
Yo u could then lose control of theve hicle. #
Do not drive with a flat tyre. #
Obse rveth e no tes on flat tyres. No
tes on flat tyres (/ page 550). #
Stop theve hicle, paying attention toroad and traf fic conditions. #
Check the tyres.
Tyre(s) overheated *A
t least one tyre is overheating. The af fected tyres are displ ayed in red. At temp eratures close tothe limit value,
th e tyres are displa yed in yello w. Displ
aymessa ges and warning/indicator lamps 653