2013-2019 Mercedes GLA SUV On-board computer and displays -> Warning and indicator lamps in the instrument cluster User Manual
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On-board computer and displays -> Warning and indicator lamps in the instrument cluster for Your Mercedes GLA SUV First Generation (2013-2019)

SmartKey
Display messages
Possible causes/consequences and MM Solutions
+
Key Does NotKey Does Not
Belong to VehicleBelong to Vehicle
You have put the wrong SmartKey in the ignition lock.
X
Use the correct SmartKey.
+
TakeTake YourYour KeyKey fromfrom
IgnitionIgnition
The SmartKey is in the ignition lock.
X
Remove the SmartKey.
+
Obtain a New KeyObtain a New Key
The SmartKey needs to be replaced.
X
Visit a qualified specialist workshop.
Warning and indicator lamps in the instrument cluster
Seat belts
Problem
Possible causes/consequences and MM Solutions
ü
After starting the
engine, the red seat
belt warning lamp lights
up for six seconds.
The seat belt warning lamp reminds the driver and front passenger
to fasten their seat belts.
X
Fasten your seat belt (Y page 44).
ü
After starting the
engine, the red seat
belt warning lamp lights
up. In addition, a warn-
ing tone sounds for up
to six seconds.
The driver's seat belt is not fastened.
X
Fasten your seat belt (Y page 44).
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 44).
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.
252
Warning and indicator lamps in the instrument cluster
On-board computer and displays
Problem
Possible causes/consequences and MM 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 belt. 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 44).
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 cluster
253
On-board computer and displays
Z
Safety systems
Problem
Possible causes/consequences and MM 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.
G
WARNING
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, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
X
Secure the vehicle against rolling away (Y page 159).
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. Therefore, BAS (Brake Assist), COLLISION PREVENTION
ASSIST, COLLISION PREVENTION ASSIST PLUS, ESP
®
(Electronic
Stability Program), the HOLD function and hill start assist, for
example, are also deactivated.
ATTENTION ASSIST is deactivated.
G
WARNING
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
The steerability and braking characteristics may be severely 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.
If the ABS control unit is faulty, there is also a possibility that other
systems, such as the navigation system or the automatic trans-
mission, will not be available.
254
Warning and indicator lamps in the instrument cluster
On-board computer and displays
Problem
Possible causes/consequences and MM Solutions
!
The yellow ABS warning
lamp is lit while the
engine is running.
ABS is temporarily unavailable. BAS, COLLISION PREVENTION
ASSIST, COLLISION PREVENTION ASSIST PLUS, ESP
®
, EBD (elec-
tronic brake force distribution), the HOLD function and hill start
assist, for example, are therefore also deactivated.
Possible causes are:
R
self-diagnosis is not yet complete.
R
the on-board voltage may be insufficient.
ATTENTION ASSIST is deactivated.
G
WARNING
The brake system continues to function normally, but without 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 severely 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 a risk of an accident.
X
Carefully drive a suitable distance, making slight steering move-
ments at a speed above 12 mph (20 km/h).
The functions mentioned above are available again when the
warning lamp goes out.
If the warning lamp is still on:
X
Observe the additional display messages in the multifunction
display.
X
Drive on carefully.
X
Visit a qualified specialist workshop.
Warning and indicator lamps in the instrument cluster
255
On-board computer and displays
Z
Problem
Possible causes/consequences and MM Solutions
!
The yellow ABS warning
lamp is lit while the
engine is running. A
warning tone also
sounds.
EBD is malfunctioning. Therefore, ABS, BAS, COLLISION PREVEN-
TION ASSIST PLUS, ESP
®
, the HOLD function and hill start assist
for example, are also not available.
ATTENTION ASSIST is deactivated.
G
WARNING
The brake system continues to function normally, but without 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 severely 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)
֌!
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 malfunctioning. Therefore, BAS, COLLISION
PREVENTION ASSIST PLUS, EBD, the HOLD function and hill start
assist for example, are also not available.
ATTENTION ASSIST is deactivated.
G
WARNING
The brake system continues to function normally, but without 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 severely 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.
256
Warning and indicator lamps in the instrument cluster
On-board computer and displays
Problem
Possible causes/consequences and MM Solutions
÷
The yellow ESP
®
warn-
ing lamp flashes while
the vehicle is in motion.
ESP
®
or traction control has intervened because there is a risk 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 as 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 conditions.
X
Do not deactivate ESP
®
.
For exceptions, see: (Y page 69).
å
The yellow ESP
®
OFF
warning lamp is lit while
the engine is running.
ESP
®
is deactivated. ESP
®
will not stabilize the vehicle if it starts to
skid or if a wheel starts to spin.
G
WARNING
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
®
.
For exceptions, see: (Y page 69).
X
Adapt your driving style to suit the road and weather conditions.
If ESP
®
cannot be activated:
X
Have ESP
®
checked at a qualified specialist workshop.
M
AMG vehicles only:
The yellow SPORT han-
dling mode warning
lamp is lit while the
engine is running.
SPORT handling mode is activated.
G
WARNING
When SPORT handling mode is switched on, ESP
®
is unable to
stabilize the vehicle.
There is an increased risk of skidding and an accident.
X
Only switch on SPORT handling mode in certain situations
(Y page 70).
Warning and indicator lamps in the instrument cluster
257
On-board computer and displays
Z
Problem
Possible causes/consequences and MM Solutions
֌
The yellow ESP
®
and
ESP
®
OFF warning
lamps are lit while the
engine is running.
ESP
®
, BAS, COLLISION PREVENTION ASSIST PLUS, the HOLD
function and hill start assist are not available due to a malfunction.
ATTENTION ASSIST is deactivated.
G
WARNING
The brake system continues to function normally, but without the
functions listed above.
The braking distance in an emergency braking situation can thus
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.
֌
The yellow ESP
®
and
ESP
®
OFF warning
lamps are lit while the
engine is running.
ESP
®
, BAS, the HOLD function and hill start assist are temporarily
unavailable.
COLLISION PREVENTION ASSIST PLUS may also have failed.
ATTENTION ASSIST is deactivated.
Self-diagnosis is not yet complete.
G
WARNING
The brake system continues to function normally, but without the
functions listed above.
The braking distance in an emergency braking situation can thus
increase.
If ESP
®
is not operational, ESP
®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X
Carefully drive a suitable distance, making slight steering move-
ments at a speed above 12 mph (20 km/h).
The functions mentioned above are available again when the
warning lamp goes out.
If the warning lamp is still on:
X
Observe the additional display messages in the multifunction
display.
X
Drive on carefully.
X
Visit a qualified specialist workshop.
258
Warning and indicator lamps in the instrument cluster
On-board computer and displays
Problem
Possible causes/consequences and MM Solutions
F (USA only)
! (Canada only)
The red indicator lamp
for the electric parking
brake flashes or lights
up and/or the yellow
warning lamp for the
electric parking brake
lights up.
X
Observe the additional display messages in the multifunction
display.
6
The red restraint sys-
tem warning lamp is lit
while the engine is run-
ning.
The restraint system is faulty.
G
WARNING
The air bags or Emergency Tensioning Devices may either be trig-
gered unintentionally or, in the event of an accident, may not be
triggered.
There is an increased risk of injury.
X
Observe the additional display messages in the multifunction
display.
X
Drive on carefully.
X
Have the restraint system checked at a qualified specialist
workshop immediately.
For further information about the restraint system, see
(Y page 42).
Warning and indicator lamps in the instrument cluster
259
On-board computer and displays
Z
Engine
Problem
Possible causes/consequences and MM 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.
i
In some states, you must immediately visit a qualified special-
ist workshop as soon as the yellow Check Engine warning lamp
lights up. This depends on the locally applicable legal require-
ments. If in doubt, check whether such legal regulations apply in
the state in which you are currently driving.
æ
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.
æ
The yellow reserve fuel
warning lamp flashes
while the engine is run-
ning.
The fuel system pressure is too low. The fuel filler cap is not closed
correctly or the fuel system is leaking.
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.
?
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 gage is defec-
tive.
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 159).
X
Consult a qualified specialist workshop.
260
Warning and indicator lamps in the instrument cluster
On-board computer and displays
Problem
Possible causes/consequences and MM Solutions
?
The red coolant warn-
ing lamp comes on
while the engine is run-
ning.
The coolant level is too low.
If the coolant level is correct, the airflow to the engine radiator may
be blocked or the electric engine radiator fan may be malfunc-
tioning.
The coolant is too hot and the engine is no longer being cooled
sufficiently.
X
Observe the additional display messages in the multifunction
display.
X
Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X
Secure the vehicle against rolling away (Y page 159).
X
Leave the vehicle and keep a safe distance from the vehicle until
the engine has cooled down.
X
Check the coolant level and add coolant (Y page 295). Observe
the warning notes.
X
If you need to add coolant more often than usual, have the
engine coolant system checked.
X
Make sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X
Do not start the engine again until the coolant temperature is
below 248 ‡(120 †). Otherwise, the engine could be damaged.
X
Drive to the nearest qualified specialist workshop.
X
Avoid subjecting the engine to heavy loads, e.g. driving in moun-
tainous terrain, and stop-and-go traffic.
?
The red coolant warn-
ing lamp comes on
while the engine is run-
ning. A warning tone
also sounds.
The coolant temperature has exceeded 248 ‡ (120 †). The air-
flow to the engine radiator may be blocked or the coolant level may
be too low.
G
WARNING
The engine is not being cooled sufficiently and may be damaged.
Do not drive when your engine is overheated. This can cause some
fluids which may have leaked into the engine compartment to
catch fire.
Steam from the overheated engine can also cause serious burns
which can occur just by opening the hood.
There is a risk of injury.
X
Observe the additional display messages in the multifunction
display.
X
Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X
Secure the vehicle against rolling away (Y page 159).
Warning and indicator lamps in the instrument cluster
261
On-board computer and displays
Z
Problem
Possible causes/consequences and MM Solutions
X
Leave the vehicle and keep a safe distance from the vehicle until
the engine has cooled down.
X
Check the coolant level and add coolant (Y page 295). Observe
the warning notes.
X
If you need to add coolant more often than usual, have the
engine coolant system checked.
X
Make sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X
At coolant temperatures below 248 ‡ (120 †), drive to the
nearest qualified specialist workshop.
X
Avoid subjecting the engine to heavy loads, e.g. driving in moun-
tainous terrain, and stop-and-go traffic.
Driving systems
Problem
Possible causes/consequences and MM Solutions
·
The red distance warn-
ing lamp lights up while
the vehicle is in motion.
A warning tone also
sounds.
You are approaching a vehicle or a stationary obstacle in your line
of travel at too high a speed.
X
Be prepared to brake immediately.
X
Pay careful attention to the traffic situation. You may have to
brake or take evasive action.
For further information about COLLISION PREVENTION ASSIST
PLUS (Y page 66).
262
Warning and indicator lamps in the instrument cluster
On-board computer and displays
Tires
Problem
Possible causes/consequences and MM Solutions
h
The yellow tire pressure
monitor warning lamp
(pressure loss/
malfunction) is lit.
The tire pressure monitor has detected a loss of pressure in at
least one of the tires.
G
WARNING
With tire pressures which are too low, there is a risk of the fol-
lowing hazards:
R
they may burst, especially as the load and vehicle speed
increase.
R
they may wear excessively and/or unevenly, which may greatly
impair tire traction.
R
the driving characteristics, as well as steering and braking, may
be greatly impaired.
There is a risk of an accident.
X
Stop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
X
Secure the vehicle against rolling away (Y page 159).
X
Observe the additional display messages in the multifunction
display.
X
Check the tires and, if necessary, follow the instructions for a
flat tire (Y page 306).
X
Check the tire pressure (Y page 332).
X
If necessary, correct the tire pressure.
h
The yellow tire pressure
monitor warning lamp
(pressure loss/
malfunction) flashes for
approximately one
minute and then
remains lit.
The tire pressure monitor is faulty.
G
WARNING
The system is possibly unable to recognize or register low tire
pressure.
There is a risk of an accident.
X
Observe the additional display messages in the multifunction
display.
X
Visit a qualified specialist workshop.
Warning and indicator lamps in the instrument cluster
263
On-board computer and displays
Z
264

Related Topics

On-board computer and displays
Useful information Important safety notes Displays and operation Menus and submenus Display messages

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