2019 MERCEDES-BENZ GLS SUV warning lights

Display messages
Possible causes/consequences and M
MSolutions #
Drive on carefull y. #
Have the brake sy stem checked immediately at a qualified specialist workshop. #
Consult a qualified specialist workshop.
6 Restraint sys. malfunction
Consult workshop *T
herestra int sy stem is faulty (/ page37). &
WARNING Risk of inju rydue tomalfunctions in there stra int sy stem
If th ere stra int sy stem is malfunctioning, restra int sy stem components may be triggered unintentionally or may
not deploy as intended during an accident. This may af fect the seat belt tensioner or airbag, forex ample. #
Have there stra int sy stem checked and repaired immediately at a qualified specialist workshop. De
tection of a restra int sy stem fault:
R The restra int sy stem warning lamp 6does not light up when the ignition is switched on.
R The restra int sy stem warning lamp 6lights up continuously or repeatedly during a journe y. #
Consult a qualified specialist workshop immediatel y.
6
Front left malfunction Con-
sult workshop (Example) *T
he cor responding restra int sy stem is faulty (/ page37). &
WARNING Risk of inju rydue tomalfunctions in there stra int sy stem
If th ere stra int sy stem is malfunctioning, restra int sy stem components may be triggered unintentionally or may
not deploy as intended during an accident. This may af fect the seat belt tensioner or airbag, forex ample. 620
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions #
Have there stra int sy stem checked and repaired immediately at a qualified specialist workshop. De
tection of a restra int sy stem fault:
R The restra int sy stem warning lamp 6does not light up when the ignition is switched on.
R The restra int sy stem warning lamp 6lights up continuously or repeatedly during a journe y. #
Consult a qualified specialist workshop immediatel y.
6
Left windowbag malfunc-
tion Consult work-
shop (Example) *T
he cor responding windowbag is malfunctioning (/ page37). &
WARNING Risk of inju ryor fata l injury due toa malfunction in the window airbag
The window airbag might be triggered unintentionally or might not be triggered at all in theev ent of an accident
with high deceleration. #
Have the window airbag checked and repaired immediately at a qualified specialist workshop. #
Consult a qualified specialist workshop immediatel y.
Front-passenger airbag dis-
abled See Owner's Manual *T
he front passenger airbag has been deactivated although an adult or a person with an adult stature is on the front
passenger seat. If additional forc es are applied tothe seat, thewe ight the sy stem de tects may be too lo w. Displ
aymessa ges and warning/indicator lamps 621

Display messages
Possible causes/consequences and M
MSolutions
& inoperative Refuel vehicle *T
here is too little fuel in the fuel tank. The stationary heater cannot be swit ched on. #
Refuel theve hicle. Lights
Display messages
Possible causes/consequences and M
MSolutions
b Left dipped beam (Example)*T
he cor responding light source is defective. #
Drive on carefully. #
Consult a qualified specialist workshop immediatel y.
% LED light bulbs: the display message forth e cor responding lamp appears only when allthe light-emitting diodes
in the lamp ha vefailed.
b Malfunction See Owner's
Manual *T
heexterior lighting is faulty. #
Consult a qualified specialist workshop.
Ve hicles with a trailer hitch: a fuse may haveblown. #
Pull over and stop theve hicle, paying attention toroad and traf fic conditions. #
Check the fuses and replace them if necessary (/ page 567).662
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
b Automatic driving lights
inoperative *T
he light sensor is faulty. #
Consult a qualified specialist workshop.
b Switch on headlamps *Y
ou are driving without lo w-beam headlamps. #
Turn the light switch totheL orà position.
b
Switch off lights *Y
ou are leaving theve hicle and the lights are still switched on. #
Turn the light switch totheà position.
b Hazard warning lamps mal-
functioning *T
he hazard warning lamp switch is faulty. #
Consult a qualified specialist workshop. Display messages and
warning/indicator lamps 663

Wa
rning and indicator lamps Overview of
warning and indicator lamps Some sy
stems will per form a self-test when the
ignition is switched on. Some warning and indi‐
cator lamps may brief lylight up or flash. This
behaviour is non-critical. These warning and indi‐
cator lamps indicate a malfunction only if they
light up or flash af terth e engine has been star‐
te d or during a journe y.
Instrument display Depending on
the display setting, the positions
of the indicator lamps on the instrument display
may dif fer from theex ample shown.
Wa rning and indicator lamps:
L Low beam(/
page157)
T St
anding lights(/ page157)
K High beam(/
page158)
#! Tu
rn signal lights( /page 158)
R Re
ar fog light(/ page157)
6 Re
stra int sy stem(/ page 666)
ü Seat belt not
fastened(/ page671)
J Brakes (yellow)(/
page 666)
J Brakes (red)(/
page 666)
! Electric pa
rking brake (yellow)
(/ page 666)
! Electric parking brake (red)
(/
page 666)
! ABS malfunction(/
page 666)÷
ESP®
(/ page 666)
å ESP®
OFF(/ page 666)
L Distance warning(/ page672)
Ù Powe r-assis tedsteering malfunc‐
tion(/ page677)
ä AIRMATIC/E- ACTIVE BODY CON‐
TROL malfunction (/ page672)
+ Off-road
gear (/ page210)
Ì On-road position (/ page 210)
; Engine diagnostics(/
page 673)
% Preglow
# Electrical
fault( / page 673)
8 Fu
elreser vewith fuel filler cap loca‐
tion indicator(/ page673)
? Coolant
too hot/cold(/ page673)
h Ty
re pressure monitor( /page 675)
ï Tr
ailer hit chis not operational or is
swiveling(/ page677) Displ
aymessa ges and warning/indicator lamps 665

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions &
WARNING Thereisrisk of skidding if EBD or ABS is malfunctioning
If EBD or ABS is malfunctioning, the wheels could lock when braking
The steering capability and braking characteristics are thus se verely impaired. The braking dis tance may increase in
an emergency braking situation. In addition, other driving saf ety sy stems are switched off. #
Drive on carefull y. #
Have the brake sy stem checked immediately at a qualified specialist workshop. #
Drive on carefully. #
Obser vethe messages on the multifunction displa y. #
Consult a qualified specialist workshop.
÷ ESP ®
wa rning lamp flashes The
yellow ESP ®
wa rning lamp flashes while theve hicle is in motion.
At least one wheel and tyre assembly has reached its traction limit (/ page 230). #
Adapt your driving style to suit thero ad and weather conditions.
÷ ESP ®
wa rning lamp lights
up The
yellow ESP ®
wa rning lamp is lit while the engine is running.
ESP ®
is malfunctioning
Other drive sy stems and driving saf ety sy stems may also be malfunctioning. 668
Display messages and warning/indicator lamps

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions &
WARNING Risk of inju rydue tomalfunctions in there stra int sy stem
If th ere stra int sy stem is malfunctioning, restra int sy stem components may be triggered unintentionally or may not
deploy as intended during an accident. This may af fect the seat belt tensioner or airbag, forex ample. #
Have there stra int sy stem checked and repaired immediately at a qualified specialist workshop. #
Drive on carefully. #
Obser vethe messages on the multifunction displa y. #
Consult a qualified specialist workshop immediatel y. Seat belt
Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
7 Seat belt warning lamp
lights up The
red seat belt warning lamp will light up once the engine has star ted.
In addition, a warning tone may sound.
The seat belt warning lamp reminds the driver and front passenger tofast entheir seat belts. #
Fasten your seat belt (/ page41).
If yo u ha veplaced objects on the front passenger seat, the seat belt warning lamp may remain lit. Display messa
ges and warning/indicator lamps 671

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
7 Seat belt warning lamp
fl ashes The
red seat belt warning lamp flashes and an intermit tent wa rning tone sounds.
The driver or front passenger has not fastened their seat belt while theve hicle is in motion. #
Fasten your seat belt(/ page41).
There are objects on the front passenger seat. #
Remo vethe objects from the front passenger seat. Driving sy
stems Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
L Wa rning lamp for dis tance
wa rning function The
red dis tancewarning lamp lights up while theve hicle is in motion.
The dis tance totheve hicle in front is too small forth e speed selected.
If th ere is an additional warning tone, you are approaching an obs tacle at too high a speed. #
Be prepared tobrake immediatel y. #
Increase the dis tance.
Fu nction of Active Brake Assi st (/ page 235).
ä Suspension warning lamp The
yellow AIRMATIC/E -ACTIVE BODY CONTROL warning lamp is on.
There is a fault in the AIRMATIC/E -ACTIVE BODY CONTROL. #
Obser vethe messages on the multifunction displa y.672
Displaymessa ges and warning/indicator lamps