Page 97 of 351
Instruments and controls95Control indicators in the instrument cluster
Page 98 of 351
96Instruments and controlsControl indicators in the overhead
console
Overview
OTurn lights 3 97XSeat belt reminder 3 97vAirbag and belt tensioners
3 97WAirbag deactivation 3 97pCharging system 3 98ZMalfunction indicator light
3 98jService vehicle soon
3 98CStop engine 3 99RBrake system 3 99jParking brake 3 99uAntilock brake system
(ABS) 3 99baGear shifting 3 99§Variable effort steering
3 99QLane departure warning
3 100RElectronic Stability Control
3 100WEngine coolant temperature
3 100!Preheating 3 100úAdBlue 3 100wTyre pressure monitoring
system 3 101IEngine oil pressure 3 101YLow fuel 3 102DAutostop (Stop-start
system) 3 102\Autostop inhibited (Stop-
start system) 3 102FExterior light 3 1029Low beam 3 102CHigh beam 3 102fHigh beam assist 3 102>Front fog lights 3 102øRear fog light 3 102mCruise control 3 102lActive emergency braking
3 103$Speed warning 3 103UCruise control 3 102,
speed limiter 3 103&Tachograph 3 103yDoor open 3 103
Page 99 of 351

Instruments and controls97Turn lights
O flashes green.
Flashes if a turn light or the hazard
warning flashers are activated.
Rapid flashing: failure of a turn light or associated fuse.
An audible warning can be heard
when the turn lights are on. When
towing a trailer, the pitch of the
audible warning changes.
Bulb replacement 3 276.
Fuses 3 284.
Turn lights 3 112.
Seat belt reminder
X illuminates or flashes red in the
overhead console.
If the seat belt is unfastened, control
indicator X will flash when vehicle
speed exceeds approx. 10 mph. A warning chime also sounds for
approx. 90 seconds.
Depending on the vehicle, the control
indicator flashes if the front
passenger seat belt is not fastened.If the seat belt is fastened, the
indicator light extinguishes.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.
Three-point seat belts 3 55.
Airbag and belt tensioners
v illuminates yellow.
When the ignition is switched on, the control indicator illuminates briefly. If
it does not illuminate or illuminates
whilst driving, there is a fault in the
airbag system. Seek the assistance
of 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.
9 Warning
Have the cause of the fault
remedied immediately by a
workshop.
Belt pretensioners 3 54.
Airbag system 3 58.
Airbag deactivation Ó illuminates yellow.
Illuminates for approx. 60 seconds
after the ignition is switched on. The
front passenger airbag is activated.
W illuminates yellow when the
ignition is switched on and remains
illuminated when the front passenger
airbag has been deactivated 3 62.
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98Instruments and controls9Danger
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.
Airbag system 3 58.
Belt tensioners 3 54.
Airbag deactivation 3 62.
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. Vehicle
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 briefly when the ignition is
switched on.
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.
If Z illuminates in combination with
A , stop vehicle and switch off engine
as soon as possible.9 Warning
Have the cause of the fault
remedied immediately by a
workshop.
Flashes when the engine is
running
Fault that could lead to catalytic
converter damage. Ease up on the
accelerator until the flashing stops.
Seek the immediate assistance of a
workshop.
Service vehicle soon
j illuminates yellow.
Illuminates briefly when the ignition is
switched on.
The vehicle needs a service.
May illuminate in combination with
another control indicator or a
message in the Driver Information
Centre 3 104.
Illuminates if cleaning of the diesel particle filter is required and
automatic cleaning does not occur
3 232.
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Instruments and controls999Warning
Have the cause of the fault
remedied immediately by a
workshop.
Stop engine
C illuminates red.
Illuminates briefly when the ignition is
switched on.
Stop vehicle and switch off engine as soon as possible.
May illuminate in combination with
another control indicator or a
message in the Driver Information
Centre 3 104.
9 Warning
Have the cause of the fault
remedied immediately by a
workshop.
Brake system
R illuminates red.
Illuminates briefly when the ignition is
switched on.
R illuminates (possibly in
combination with C) if the brake fluid
level is too low 3 273 or brake system
has a fault.9 Warning
Stop. Do not continue your
journey. Consult a workshop.
Brake system 3 243.
Parking brake j illuminates red.
Control indicator j remains
illuminated when the parking brake is
applied and extinguishes when the
parking brake is released 3 244.
Antilock brake system (ABS)
u illuminates yellow.
Illuminates briefly when the ignition is switched on. The system is ready for
operation when u extinguishes.
Illuminates during driving when there
is a fault in the ABS. The brake
system remains operational but
without ABS regulation.
Antilock brake system 3 243.
Gear shifting
b or a illuminates in the Driver
Information Centre.
Illuminates when gearshifting is
recommended for fuel saving
reasons.
ECO mode 3 224.
Variable effort steering § illuminates red.
Illuminates briefly when the ignition is
switched on.
Illuminates during driving
The power steering system has a
fault.
May illuminate together with control
indicator C.
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100Instruments and controls9Warning
Have the cause of the fault
remedied immediately by a
workshop.
Lane departure warning
Q illuminates yellow.
Illuminates briefly when the ignition is
switched on.
Illuminates permanently when the
system is switched off.
A warning chime sounds in
conjunction with Q when the system
recognises an unintended lane
change.
Q illuminates white in the Driver
Information Centre when the ignition
is switched on and the system is
ready to operate.
Lane departure warning 3 260.
Electronic Stability Control
b flashes or illuminates yellow.
Illuminates briefly when the ignition is switched on.
Flashing during driving
The system is actively engaged.
Engine output may be reduced and
the vehicle may be braked
automatically to a small degree
3 247.
Illuminates during driving
The system is unavailable.
May illuminate together with control
indicator j 3 98. A corresponding
message also appears in the Driver
Information Centre 3 104.
ESC 3 247.
Traction Control system 3 246.
Engine coolant temperature
W illuminates blue or red.
Illuminates briefly blue when the
ignition is switched on or when engine temperature is low.Illuminates when the engine is
running
If W illuminates red (possibly in
combination with control indicator
C ), stop vehicle and allow the engine
to idle for 2 minutes. W should
extinguish, if not then switch off
engine.Caution
Coolant temperature too high.
Check coolant level 3 272.
If there is sufficient coolant, consult a workshop.
Preheating
! illuminates yellow.
Preheating is activated.Only
activates when outside temperature
is low.
AdBlue ú illuminates yellow.
Page 103 of 351

Instruments and controls101AdBlue level is low. Refill AdBlue as
soon as possible, to avoid prevention
of engine starts.
Illuminates together with control indicator j to indicate a system
failure or as a warning that engine
starting may not be possible after a
certain distance. Seek the assistance
of a workshop immediately.
A corresponding message may
appear in the Driver Information
Centre 3 104.
AdBlue 3 233.
Tyre pressure monitoring system
w illuminates or flashes yellow.
Illuminates briefly when the ignition is switched on.
Illuminates
Tyre pressure loss. Stop immediately
and check tyre pressure.
Control indicator w illuminates
together with C 3 99 and a
corresponding message appears inthe Driver Information Centre when a
puncture or severely under-inflated
tyre is detected.
Flashes
Fault in system. After a delay the
control indicator illuminates
continuously. Consult a workshop.
Control indicator w illuminates
together with j 3 98 and a
corresponding message appears in
the Driver Information Centre when a tyre without a pressure sensor is
mounted (e.g. spare wheel).
Tyre pressure monitoring system 3 291.
Engine oil pressure
I illuminates red.
Illuminates briefly when the ignition is switched on.Illuminates when the engine is
runningCaution
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, set selector lever to N.
3. Move out of the flow of traffic as quickly as possible without
impeding other vehicles.
4. Switch off ignition.
Page 104 of 351

102Instruments and controls9Warning
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 steeringwheel lock could engage
unexpectedly.
Check engine oil level 3 270.
Keep engine turned off and let the
vehicle be towed to a workshop.
Low fuel Y illuminates yellow.
Illuminates when the ignition is
switched on and extinguishes shortly
after the engine starts.
Illuminates when the engine is
running
Fuel level in the tank is too low. Refuel
immediately.
Never run the tank dry.
Refuelling 3 262.
Catalytic converter 3 233.
Bleeding the diesel fuel system
3 275.
Stop-start system \ illuminates when an Autostop is
inhibited when certain conditions are
not fulfilled.
Ï illuminates during an Autostop.
Ï flashes if the clutch is not released
sufficiently.
Stop-start system 3 227.
Exterior light
F illuminates green.
Illuminated when the side lights are
on 3 109.
Low beam
9 illuminates or flashes green.
Illuminates
Illuminated when the headlights are on 3 109.Flashes
Fault in the lighting.
High beam P illuminates blue.
Illuminated when high beam is on and during headlight flash 3 110.
High beam assist f illuminates when the high beam
assist is activated 3 110.
Front fog lights
> illuminates green.
Illuminated when the front fog lights
are on 3 112.
Rear fog light ø illuminates yellow.
Illuminated when the rear fog light is on 3 113.
Cruise control
U , m illuminate green.