Page 94 of 285
92Instruments and controlsControlsSteering wheel adjustment
Unlock lever, adjust steering wheel,
then engage lever and ensure it is
fully locked.
Do not adjust steering wheel unless
vehicle is stationary and steering
wheel lock has been released.
Steering wheel controls
Cruise control and speed limiter are
operated via the controls on the left
side of the steering wheel.
Additionally, adaptive cruise control can be set by using the controls on the
left side of the steering wheel.
Infotainment system can be operated
via the controls on the right side of the
steering wheel.
Further information is available in the
Infotainment manual.
Driver assistance systems 3 170.
Heated steering wheel
Activate heating by pressing *.
Activation is indicated by the LED in
the button.
Heating is operational when the
engine is running and during an
Autostop.
Stop-start system 3 150.
Page 101 of 285
Instruments and controls99Warning lights, gauges
and indicators
Instrument cluster
Depending on the version, the Driver
Information Centre may vary.
Overview
OTurn signal 3 103XSeat belt reminder 3 103vAirbag and belt tensioners
3 104VAirbag deactivation 3 104pCharging system 3 104ZMalfunction indicator light
3 105CService vehicle soon 3 105YStop engine 3 105JSystem check 3 105RBrake and clutch system
3 105m , oParking brake 3 106
Electric parking brake 3 106uAntilock brake system (ABS)
3 106RGear shifting 3 106LLane keep assist 3 107bElectronic Stability Control
and Traction Control system
3 107!Preheating 3 107%Exhaust filter 3 107YAdBlue 3 108wDeflation detection system
3 108IEngine oil pressure 3 108Y oLow fuel 3 109W oEngine coolant temperature
high 3 107DAutostop 3 1098Exterior light 3 1099Low beam 3 109CHigh beam 3 109fHigh beam assist 3 109òDescent control system
3 107>Front fog lights 3 109øRear fog light 3 109
Page 103 of 285
Instruments and controls101Tachometer
Displays the engine speed.
Drive in a low engine speed range for each gear as much as possible.
A red marker indicates the beginning
of the warning zone of excessive revolutions. For Diesel engines, thewarning zone starts at 5000
revolutions per minute. For petrol
engines, the warning zone starts at
7000 revolutions per minute.
Caution
If the needle is beyond the red marker, the maximum permitted
engine speed is exceeded. Engine at risk.
Fuel gauge
Displays the fuel level.
Control indicator o illuminates if the
fuel level is low.
Never run the fuel tank dry. Because of the fuel remaining in the
tank, the top-up quantity may be less
than the specified fuel tank capacity.
Engine coolant temperature
gauge
Displays the coolant temperature.
50:engine operating temperature
not yet reached90:normal operating temperature130:temperature too high
Control indicator o illuminates if
coolant temperature is too high. Switch off engine immediately.
Page 104 of 285

102Instruments and controlsCaution
If engine coolant temperature is
too high, stop vehicle, switch off
engine. Danger to engine. Check
coolant level.
Engine oil level monitor
The state of the engine oil level is
displayed in the Driver Information
Centre for a few seconds following
the service information after switching
on the ignition.
A proper state of engine oil level is
indicated by the message Oil level
correct .
If engine oil level is low, I flashes
and Oil level incorrect is indicated,
accompanied by C. Confirm
engine oil level by using the oil
dipstick and top up engine oil
respectively.
Engine oil 3 216.
A fault of measurement is indicated
by the message Oil level
measurement invalid . Check engine
oil level manually by using the
dipstick.
Service display
The service system informs when to
change the engine oil and filter or a
vehicle service is required. Based on
driving conditions, the interval at
which an engine oil and filter change
is required can vary considerably.
Service information 3 254.
A required service due is displayed in the Driver Information Centre for
seven seconds after switching on the
ignition.
If no service is required for the next
3000 km or more no service
information appears in the display.
If service is required within the next
3000 km, the remaining distance or
time duration is indicated for several
seconds. Simultaneously C lights
up permanently as reminder.
If service is required in less than
1000 km, C flashes and then lights
up permanently. Remaining distance
or time duration is indicated for
several seconds.
Overdued service is indicated by a message in the Driver Information
Centre which indicates the overdueddistance. C flashes and then lights
up permanently until service is
executed.
Reset of service interval After each service, the service
indicator must be reset to ensure
proper functionality. It is
recommended to seek the assistance
of a workshop.
If service is executed by yourself,
operate as following:
● switch off ignition
● press and hold button CHECK
● switch on ignition, the distance indication begins a countdown
● when the display indicates =0,
release the button
C disappears
Page 106 of 285

104Instruments and controlscluster and the symbols in the
roof console illuminate until seat
belt is fastened.
● When driving faster than 20 km/h and a seat belt isunfastened, the symbol in the
roof console for the respective
seat flashes and a chime is
audible. For the second row rear
seats, this only applies if at least
one rear seat belt was previously
fastened.
Aditionally, X illuminates in the
instrument cluster.
After two minutes the chime goes off and X in the roof console
illuminates constantly until the
seat belt of the respective seat is
fastened.
Airbag and belt tensioners v illuminates red.
When the ignition is switched on, the control indicator illuminates for
approx. four seconds. If it does not
illuminate, does not extinguish after
four seconds or illuminates whilst
driving, there is a fault in the airbagsystem. 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 57.
Airbag system 3 60.
Airbag deactivation
Ó ON illuminates yellow.
The front passenger airbag is
activated.
* OFF illuminates yellow.
The front passenger airbag is
deactivated.
Airbag deactivation 3 65.
Charging system
p illuminates red.
Illuminates when the ignition is
switched on and extinguishes shortly
after the engine starts.
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Instruments and controls105Illuminates 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 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.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 assistance of a workshop
immediately.
Service vehicle soon
C illuminates yellow.
Illuminates briefly when the ignition is
switched on.
May illuminate together with other
control indicators and a
corresponding message in the Driver
Information Centre.
Seek the assistance of a workshop
immediately.
Stop engine
Y illuminates red.
Illuminates briefly when the ignition is switched on.Illuminates together with other control
indicators, accompanied by a warning chime and a corresponding message in the Driver Information Centre.
Stop engine immediately and seek
the assistance of a workshop.
System check
J illuminates yellow or red.
Illuminates yellow
A minor engine fault has been
detected.
Illuminates red A major engine fault has been
detected.
Stop engine as soon as possible and
seek the assistance of a workshop.
Brake and clutch systemR illuminates red.
The brake and clutch fluid level is too
low.
Page 109 of 285

Instruments and controls107Descent control system
ò illuminates or flashes green.
Iluminates green The system is switched on and ready
to operate.
Flashes green
The system is in operation.
Lane keep assist a illuminates green or yellow, or
flashes yellow.
Illuminates green
The system is switched on and ready
to operate.
Illuminates yellow The system approaches a detected
lane marking without using the turn
light in that direction.
Flashes yellow
The system recognizes that the lane
is departed significantly.Lane keep assist 3 201.
Electronic Stability Control and Traction Control system
b illuminates or flashes yellow.
Illuminates
A 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.
Flashes
The system is actively engaged.
Engine output may be reduced and
the vehicle may be braked
automatically to a small degree.
Electronic Stability Control and
Traction Control system 3 166.
Selective ride control 3 168.
Engine coolant temperature o illuminates red.Illuminates when the engine is
running
Stop, switch off engine.Caution
Coolant temperature too high.
Check coolant level immediately
3 217.
If there is sufficient coolant, consult a workshop.
Preheating
! illuminates yellow.
Preheating of diesel engine is
activated. Only activates when
outside temperature is low. Start the
engine when control indicator
extinguishes.
Exhaust filter
% or C illuminates yellow,
accompanied by a message in the
Driver Information Centre.
The exhaust filter requires cleaning.
Page 110 of 285

108Instruments and controlsContinue driving until the control
indicator extinguishes.
Illuminates temporarily Start of saturation of the exhaust filter.
Start cleaning process as soon as
possible by driving at a vehicle speed
of at least 60 km/h.
Illuminates constantlyIndication of a low additive level. Seek
the assistance of a workshop.
Exhaust filter 3 154.
AdBlue Y flashes or illuminates yellow.
Illuminates yellow
The remaining driving range is
between 800 km and 2400 km.
Flashes yellow
The remaining driving range is
between 0 km and 800 km.
AdBlue level is low. Refill AdBlue soon to avoid prevention of the
engine start.AdBlue 3 155.
Deflation detection system
w illuminates or flashes yellow.
Illuminates
Tyre pressure loss in one or more
wheels. Stop immediately and check
tyre pressure.
Flashes
Fault in system. Consult a workshop.
Deflation detection system 3 234.
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
runningCaution
Engine lubrication may be
interrupted. This may result in
damage to the engine and / or
locking of the drive wheels.
1. Select neutral gear.
2. Move out of the flow of traffic as quickly as possible without
impeding other vehicles.
3. Switch off ignition.