74Instruments and controlsWhen the ignition is switched on,
most control indicators will illuminate
briefly as a functionality test.
The control indicator colours mean:red:danger, important reminderyellow:warning, information, faultgreen:confirmation of activationblue:confirmation of activationwhite:confirmation of activation
Instruments and controls77If 9 illuminates together with I
3 82; stop engine immediately and
seek the assistance of a workshop.
In the event of the failure of control
indicator v for airbags and belt
tensioners 3 77, 9 will illuminate.
9 also illuminates if the fuel cut-off
switch is triggered. Consult a
workshop.
Fuel cut-off system 3 91, Vehicle
shutdown 3 109.
Depending on version, corresponding
warning messages may also be
displayed in the Driver Information
Centre (DIC) 3 85.
Turn signal 2 or 3 flashes green.
Flashes
A turn signal or the hazard warning flashers are activated.
Rapid flashing: failure of a turn signal
light or associated fuse, failure of turn
signal light on trailer.
Bulb replacement 3 140, Fuses
3 146.Turn signals 3 96.
Seat belt reminder
Seat belt reminder for front seats
X for driver's seat and/or front
passenger seat illuminates or flashes
red.
Illuminates
When the ignition has been switched
on, control indicator X illuminates
briefly if driver's seat belt and/or front
passenger seat belt is not engaged. A
warning chime also sounds for a few
seconds.
Flashes
During driving X will flash and a
warning chime will sound for
90 seconds until the front seat belts
are fastened.
Three-point seat belts 3 42.9 Warning
Fasten seat belt before each trip.
In the event of an accident, people
not wearing seat belts endanger their fellow occupants and
themselves.
To deactivate the seat belt reminder,
consult a workshop. Reactivation of the warning chime for seat belt
reminder can be done via the Driver
Information Centre (DIC) 3 85.
Notice
The volume of the warning chime
can also be adjusted via the Driver
Information Centre (DIC) 3 85.
Airbag and belt tensioners
v illuminates red.
When the ignition is switched on, the control indicator illuminates for
approx. 4 seconds.
If it does not illuminate, does not go
out after 4 seconds or illuminates
whilst driving, there is a fault in the
airbag system. Seek the assistance
78Instruments and controlsof a workshop. The airbags and belt
pretensioners may fail to trigger in the
event of an accident.
Deployment of the belt pretensioners
or airbags is indicated by continuous
illumination of v.
Depending on version, 9 will
illuminate in the event of the failure of
control indicator v.
Generic warning 9 3 76.
Depending on version, a warning
message may also be displayed in
the Driver Information Centre (DIC)
3 85.9 Warning
Have the cause of the fault
remedied immediately by a
workshop.
Belt pretensioners, airbag system
3 41, 3 44.
Airbag deactivation
* illuminates yellow.
With the front passenger airbag
activated:
When the ignition is switched on, control indicator * illuminates for
approx. 4 seconds, flashes for
another 4 seconds and then
extinguishes.
With the front passenger airbag
deactivated:
* permanently illuminates yellow.
Airbag deactivation 3 49.9 Danger
Risk of fatal injury for a child using
a child restraint system together
with activated front passenger
airbag.
Risk of fatal injury for an adult
person with deactivated front
passenger airbag.
Charging system
p illuminates red.
Illuminates when the ignition is
switched on and extinguishes shortly
after the engine starts.
Illuminates when the engine is
running
Stop, switch off engine. Battery is not
charging. Engine cooling may be
interrupted. The brake servo unit may cease to be effective. Seek the
assistance of a workshop.
Malfunction indicator light
Z illuminates or flashes yellow.
Illuminates when the ignition is
switched on and extinguishes shortly
after the engine starts.
Illuminates when the engine is
running
Fault in the emission control system.The permitted emission limits may be
exceeded. Seek the assistance of a
workshop immediately.
Instruments and controls79Flashes when the engine is
running
Fault that could lead to catalytic
converter damage. Ease up on the accelerator until the flashing stops.
Seek the assistance of a workshop
immediately.
Depending on version, a warning
message may also be displayed in
the Driver Information Centre (DIC)
3 85.
Brake system
R illuminates red.
Illuminates after the ignition is
switched on if the parking brake is
applied 3 119. A warning chime will
sound if a certain speed is exceeded
with the parking brake applied.
Illuminates when the parking brake is
released if the brake fluid level is too
low 3 137.9 Warning
Stop. Do not continue your
journey. Consult a workshop.
Illuminates if the brake vacuum servo
fails; the brake pedal becomes stiff
when pressed. The brake system
remains operational however,
assistance will be reduced. The
steering may also require
considerably more effort when
turning.
Depending on version, a warning
message may also be displayed in
the Driver Information Centre (DIC) 3 85.
Brake pad wear
F illuminates yellow.
The front brake pads are worn, seek
the assistance of a workshop
immediately.
Depending on version, a warning
message may also be displayed in
the Driver Information Centre (DIC)
3 85.
Antilock brake system
(ABS)
u illuminates yellow.Illuminates for a few seconds after the
ignition is switched on. The system is
ready for operation when the control
indicator extinguishes.
If the control indicator does not
extinguish after a few seconds, or if it illuminates while driving, there is a
fault in the ABS. The brake system
remains operational but without ABS
regulation.
If u illuminates together with R,
there is a fault in the braking system.
Depending on version, a warning
message may also be displayed in
the Driver Information Centre (DIC)
3 85. Seek the assistance of a
workshop immediately.
Antilock brake system 3 119.
Transmission
s illuminates red.
Illuminates for a few seconds after the ignition is switched on.
s illuminates during driving when a
fault is present in the transmission.
80Instruments and controlsA warning message may also appear
in the Driver Information Centre (DIC)
3 85 in conjunction with a warning
chime.
Continued driving is possible,
provided the vehicle is driven with
care and anticipation.
Have the cause of the fault remedied
by a workshop as soon as possible.
Manual transmission automated
3 115.
Upshift
[ or Ò illuminates green in the
Driver Information Centre (DIC)
3 85 when gearshifting is
recommended to improve fuel
economy.
Hill start assistZ illuminates yellow.
Illuminates for a few seconds after the ignition is switched on.
If the control indicator does not
extinguish after a few seconds, or if it
illuminates while driving, there is afault in the Hill start assist. Seek the
assistance of a workshop to have the
fault remedied.
The Electronic Stability Control (ESC) control indicator R may also
illuminate 3 80 in conjunction with
Z .
Depending on version, 9 may
illuminate as an alternative if control
indicator Z is not present, in
conjunction with a warning message
in the Driver Information Centre (DIC)
3 85.
Generic warning 9 3 76.
Hill start assist 3 120.
Ultrasonic parking assist r illuminates yellow.
Fault in system
or
Fault due to sensors that are dirty or
covered by ice or snow
orInterference due to external sources
of ultrasound. Once the source of
interference is removed, the system
will operate normally.
Have the cause of the fault in the
system remedied by a workshop.
Control indicator 9 will illuminate as
an alternative if control indicator r
is not present. Depending on version,
a warning message may also be
displayed in the Driver Information
Centre (DIC) 3 85.
Generic warning 9 3 76.
Ultrasonic parking assist 3 124.
Electronic Stability Control
R illuminates or flashes yellow.
Illuminates for a few seconds after the
ignition is switched on. The system is ready for operation when the control
indicator extinguishes.
Flashes during driving
The system is actively engaged.
Engine output may be reduced and the vehicle may be braked
automatically to a small degree.
Instruments and controls81Illuminates during drivingA fault in the system is present.
Continued driving is possible. Driving
stability, however, may deteriorate
depending on road surface
conditions.
Have the cause of the fault remedied
by a workshop.
Depending on version, a warning
message may also be displayed in
the Driver Information Centre (DIC)
3 85.
Electronic Stability Control (ESC)
3 121, Traction control system/Anti-
Slip Regulator (ASR) 3 121.
Engine coolant temperature
$ illuminates red.
Illuminates for a few seconds after the ignition is switched on.
If control indicator $ illuminates, the
coolant temperature is too high. Depending on version, a warning
message may also be displayed in
the Driver Information Centre (DIC)
3 85. Seek the assistance of a
workshop.Caution
If engine coolant temperature is
too high, stop vehicle, switch off
the ignition. Danger to engine.
Check coolant level.
If the control indicator remains on, seek the assistance of your
workshop.
Engine coolant temperature gauge
3 72.
Preheating
! illuminates yellow.
Preheating is activated. Only
activates when outside temperature is low.
Notice
In very hot outside
temperatures, ! may illuminate
briefly when the ignition is switched
on.
The engine can be started when !
extinguishes.
Starting the engine 3 109.
Flashes
A fault is detected in the engine
preheating system. Depending on
version, a warning message may also
be displayed in the Driver Information
Centre (DIC) 3 85.
If ! does not extinguish, consult a
workshop.
Diesel particle filter % illuminates yellow.
Illuminates for a few seconds after the ignition is switched on.
If it does not extinguish after a brief
delay or illuminates whilst driving, the
diesel particle filter requires cleaning. Continue driving until %
extinguishes. Depending on version,
a warning message may also be
displayed in the Driver Information
Centre (DIC) 3 85.
If possible, do not allow engine speed
to drop below 2000 rpm during the
cleaning process.
82Instruments and controlsControl indicator % illuminates when
diesel particle filter is full. Start
cleaning process as soon as possible
to avoid damage to the engine.
Diesel particle filter 3 113, Stop-start
system 3 110.
Tyre pressure monitoring
system
w illuminates or flashes yellow.
Illuminates
Tyre pressure loss. Stop immediately
and check tyre pressure.
Control indicator w illuminates
together with a warning chime and, in
vehicles with Multifunction version of
the Driver Information Centre (DIC) 3 85, a corresponding message
also appears when a puncture or
severely under-inflated tyre is
detected.
Flashes
Fault in system. After several
seconds w illuminates continuously.
Consult a workshop.Depending on version, a
corresponding message also
appears in the DIC when a tyre
without a pressure sensor is mounted (e.g. spare wheel).
Tyre pressure monitoring system
3 151.
Engine oil pressure
I illuminates red.
Illuminates when the ignition is
switched on and extinguishes shortly
after the engine starts.
Illuminates when the engine is
running
Depending on version, a warning
message may also be displayed in
the Driver Information Centre (DIC) 3 85.Caution
Engine lubrication may be
interrupted. This may result in
damage to the engine and/or
locking of the drive wheels.
1. Depress clutch.
2. Select neutral gear (or move selector lever to N).
3. Move out of the flow of traffic as quickly as possible without
impeding other vehicles.
4. Switch off ignition.9 Warning
When the engine is off,
considerably more force is needed
to brake and steer. During an
Autostop the brake servo unit will
still be operational.
Do not remove key until vehicle is
stationary, otherwise the steering wheel lock could engage
unexpectedly.
Check oil level before seeking the
assistance of a workshop 3 135.
Change engine oil
Diesel engines with diesel particle filter
I flashes red.
Instruments and controls83Illuminates when the ignition is
switched on and extinguishes shortly after the engine starts.
The engine oil life monitor lets you know when to change the oil. Control
indicator I will flash to indicate that
engine oil life has been diminished
and the oil needs changing.
Depending on version, a warning
message may also be displayed in
the Driver Information Centre (DIC) 3 85.
Based on driving conditions, the
interval at which an oil change will be
indicated can vary considerably.
Depending on model variant, I may
flash in the following ways:
● for 1 minute every 2 hours, or
● for 3 minute cycles with I off for
intervals of 5 seconds
The warning will be repeated every
time the engine is started, until the
engine oil is changed and the service
display is reset. Seek the assistance
of a workshop.
Service display 3 73.Low engine oil level
S illuminates red.
Illuminates for a few seconds after the
ignition is switched on.
If the control indicator does not
extinguish after a few seconds, or if it illuminates while driving, the engine
oil level is insufficient.
Depending on version, a warning
message may also be displayed in
the Driver Information Centre (DIC)
3 85.
Check oil level before seeking the assistance of a workshop 3 135.
Low fuel $ illuminates or flashes yellow.
Illuminates for a few seconds after the
ignition is switched on.
Illuminates
Level in fuel tank is too low. Refuel
immediately 3 127.
Never run the tank dry.
Catalytic converter 3 114.Flashes
Fault in fuel system. Have the cause
of the fault remedied by a workshop.
The needle in the fuel gauge will point to 0. Fuel gauge 3 71.
Drain fuel filter U illuminates yellow.
Illuminates for a few seconds after the
ignition is switched on.
Illuminates when the engine is
running
Indicates the presence of water in the
diesel. Depending on version, a
warning message may also be
displayed in the Driver Information
Centre (DIC) 3 85. Seek the
assistance of a workshop
immediately.
Immobiliser d illuminates yellow.
Fault in the immobiliser system. The
engine cannot be started.