MERCEDES-BENZ GLK-CLASS SUV 2015 Owners Manual

Display messagesPossible causes/consequences and M Solutions
Â
Don't Forget Your
Key
The display message is shown for a maximum of 60 seconds and
is only a reminder.
You have opened the driver's door with the engine switched off.
The KEYLESS-GO key is not in the ignition lock.
X Remember to take the KEYLESS-GO key with you when you
leave the vehicle.
Â
Key Not Detected

Warning and indicator lamps in the instrument cluster
General notes
Some systems carry out a self-diagnosis when the ignition is switched on. Therefore, some
indicator and warning lamps may light up or flash temporarily. Thi s behavior is non-critical.
These indicator and warning lamps only indicate a malfunction i f they light up or flash after
starting the engine or whilst driving.
Seat belts
ProblemPossible causes/consequences and M Solutions
ü
After starting the
engine, the red seat
belt warning lamp lights
up for 6 seconds.The seat belt warning lamp reminds the driver and front passenger
to fasten their seat belts.
X Fasten your seat belt ( Y page 58).
ü
After starting the
engine, the red seat
belt warning lamp lights
up. In addition, a warn-
ing tone sounds for up
to 6 seconds.The driver's seat belt is not fastened.
X Fasten your seat belt ( Y page 58).
The warning tone ceases.
ü
The red seat belt warn-
ing lamp lights up after
the engine starts, as
soon as the driver's or
the front-passenger
door is closed.The driver or front passenger has not fastened their seat belt.
X Fasten your seat belt ( Y page 58).
The warning lamp goes out.
There are objects on the front-passenger seat.
X Remove the objects from the front-passenger seat and stow
them in a secure place.
The warning lamp goes out.
260Warning and indicator lamps in the instrument cluster
On-board computer and displays

ProblemPossible causes/consequences and M Solutions
ü
The red seat belt warn-
ing lamp flashes and an
intermittent audible
warning sounds.The driver or front passenger has not fastened their seat b elt. The
vehicle is being driven faster than 15 mph (25 km/h) or has briefly
been driven faster than 15 mph (25 km/h). X Fasten your seat belt ( Y page 58).
The warning lamp goes out and the intermittent warning tone
ceases.
There are objects on the front-passenger seat. The vehicle is being
driven faster than 15 mph (25 km/h) or has briefly been driven
faster than 15 mph (25 km/h).
X Remove the objects from the front-passenger seat and stow
them in a secure place.
The warning lamp goes out and the intermittent warning tone
ceases.
Warning and indicator lamps in the instrument cluster261
On-board computer and displays
Z

Safety systems
ProblemPossible causes/consequences and M Solutions
$ (USA only)
J (Canada only)
The red brake system
warning lamp comes on while the engine is run-
ning. A warning tone
also sounds.There is not enough brake fluid in the brake fluid reservoir.
GWARNING
The braking effect may be impaired.
There is a risk of an accident.
X Pull over and stop the vehicle safely as soon as possible, p aying
attention to road and traffic conditions. Do not con tinue driving
under any circumstances.
X Secure the vehicle against rolling away ( Y page 168).
X Do not add brake fluid. Adding more will not remedy the mal-
function.
X Consult a qualified specialist workshop.
X Observe the additional display messages in the multifunction
display.
!
The yellow ABS warning
lamp is lit while the
engine is running.ABS (Anti-lock Braking System) is deactivated due to a malfunc -
tion. BAS (Brake Assist), BAS PLUS, ESP ®
(Electronic Stability
Program), PRE

ProblemPossible causes/consequences and M Solutions
!
The yellow ABS warning
lamp is lit while the
engine is running.ABS is temporarily unavailable. BAS, BAS PLUS, ESP ®
, EBD (elec-
tronic brake force distribution), PRE

ProblemPossible causes/consequences and M Solutions
!
The yellow ABS warning
lamp is lit while the
engine is running. A
warning tone also
sounds.EBD is not available due to a malfunction. Therefore, BAS, BAS
PLUS, ESP®
, PRE-SAFE ®
, PRE-SAFE ®
Brake, the HOLD function,
hill start assist and ESP ®
trailer stabilization are also unavailable,
for example.
ATTENTION ASSIST is deactivated.
GWARNING
The brake system continues to function normally, but wi thout the
functions listed above. The front and rear wheels could therefore
lock if you brake hard, for example.
The steerability and braking characteristics may be sever ely affec-
ted. The braking distance in an emergency braking situation can
increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Visit a qualified specialist workshop.
$ (USA only)
J (Canada only)
÷ å !
The red brake warning
lamp, the yellow ESP ®
and ESP ®
OFF warning
lamps and the yellow
ABS warning lamp are
lit while the engine is
running.ABS and ESP ®
are not available due to a malfunction. Therefore,
BAS, BAS PLUS, EBD, PRE-SAFE ®
, PRE-SAFE ®
Brake, the HOLD
function, hill start assist and ESP ®
trailer stabilization are also
unavailable, for example.
ATTENTION ASSIST is deactivated.
GWARNING
The brake system continues to function normally, but wi thout the
functions listed above. The front and rear wheels could therefore
lock if you brake hard, for example.
The steerability and braking characteristics may be sever ely affec-
ted. The braking distance in an emergency braking situation can
increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Visit a qualified specialist workshop.
264Warning and indicator lamps in the instrument cluster
On-board computer and displays

ProblemPossible causes/consequences and M Solutions
֊
The yellow ESP®
warn-
ing lamp flashes while
the vehicle is in motion.ESP ®
or traction control has intervened because there is a r isk of
skidding or at least one wheel has started to spin.
Cruise control or DISTRONIC PLUS is deactivated.
X When pulling away, only depress the accelerator pedal a s far as
necessary.
X Ease off the accelerator pedal while the vehicle is in motion.
X Adapt your driving style to suit the road and weather c onditions.
X Do not deactivate ESP ®
.
In rare cases ( Y page 71) , it may be best to deactivate ESP ®
.
Observe the important safety notes on ESP ®
(Y page 71).
å
The yellow ESP ®
OFF
warning lamp is lit while the engine is running.ESP ®
is deactivated.
GWARNING
If ESP ®
is switched off, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Reactivate ESP ®
.
In rare cases ( Y page 71) , it may be best to deactivate ESP ®
.
Observe the important safety notes on ESP ®
(Y page 71).
X Adapt your driving style to suit the road and weather c onditions.
If ESP ®
cannot be activated:
X Drive on carefully.
X Have ESP ®
checked at a qualified specialist workshop.
÷ä å
The yellow ESP ®
and
ESP ®
OFF warning
lamps are lit while the
engine is running.ESP ®
, BAS, BAS PLUS, PRE

ProblemPossible causes/consequences and M Solutions
÷ å
The yellow ESP ®
and
ESP ®
OFF warning
lamps are lit while the
engine is running.ESP ®
, BAS, PRE-SAFE ®
, the HOLD function, hill start assist and
ESP ®
trailer stabilization are temporarily unavailable.
BAS PLUS and PRE

Engine
ProblemPossible causes/consequences and M Solutions
;
The yellow Check
Engine warning lamp
lights up while the
engine is running.There may be a malfunction, for example:
R in the engine management
R in the fuel injection system
R in the exhaust system
R in the ignition system
R in the fuel system
The emission limit values may be exceeded and the engine may be
in emergency mode.
X Have the vehicle checked as soon as possible at a qualified
specialist workshop.
iIn some states, you must immediately visit a qualified sp ecial-
ist workshop as soon as the yellow Check Engine warning lam p
lights up. This is due to the legal requirements in effect in these
states. If in doubt, check whether such legal regulations a pply in
the state in which you are currently driving.
8
The yellow reserve fuel
warning lamp flashes
while the vehicle is in
motion. In addition,
the ; Check Engine
warning lamp may light
up.The fuel system pressure is too low. The fuel filler cap i s not closed
correctly or the fuel system is leaking.
X Observe the additional display messages in the multifunction
display.
X Check that the fuel filler cap is correctly closed.
X If the fuel filler cap is not correctly closed: close the fuel filler
cap.
X If the fuel filler cap is closed: visit a qualified specialist work-
shop.
8
The yellow reserve fuel
warning lamp lights up
while the engine is run-
ning.The fuel level has dropped into the reserve range.
X Refuel at the nearest gas station.
Warning and indicator lamps in the instrument cluster267
On-board computer and displays
Z

ProblemPossible causes/consequences and M Solutions
?
The red coolant warn-
ing lamp lights up while
the engine is running
and the coolant tem-
perature gauge is at the start of the scale.The temperature sensor for the coolant temperature gauge is
defective.
The coolant temperature is no longer being monitored. There is a
risk of engine damage if the coolant temperature is too high.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions. Do not continue
driving under any circumstances.
X Secure the vehicle against rolling away ( Y page 168).
X Consult a qualified specialist workshop.
268Warning and indicator lamps in the instrument cluster
On-board computer and displays