Page 85 of 317
Instruments and controls83Controls
Steering 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
The Infotainment system, some driver assistance systems and a connected
mobile phone can be operated via the
controls on the steering wheel.
Further information is available in the
Infotainment manual.
Driver assistance systems 3 203.
Heated steering wheel
Activate heating by pressing *.
Activation is indicated by the LED in
the button.
Page 88 of 317
86Instruments and controls
Push lever. Washer fluid is sprayed
onto the rear window and the wiper
wipes a few times.
Do not use if the rear window is
frozen.
Switch off in car washes.
The rear window wiper comes on
automatically when the windscreen
wiper is switched on and reverse gear
is engaged.
Activation or deactivation of this
function can be changed in the
Settings menu in the Info-Display.
Vehicle personalisation 3 108.
Outside temperature
A drop in temperature is indicated
immediately and a rise in temperature
after a time delay.
If outside temperature drops to 3 °C,
a warning message is displayed in the Driver Information Centre.9 Warning
The road surface may already be
icy even though the display
indicates a few degrees above
0 °C.
Clock
Date and time are shown in the
Info-Display.
R 4.0 IntelliLink
Press ; and then select Settings.
Select Time and Date to display the
respective submenu.
Page 96 of 317

94Instruments and controlsOverviewOTurn signal 3 94XSeat belt reminder 3 95vAirbag and belt tensioners
3 95VAirbag deactivation 3 96pCharging system 3 96ZMalfunction indicator light
3 96RBrake and clutch system 3 96mElectric parking brake 3 97jElectric parking brake fault
3 97-Operate pedal 3 97uAntilock brake system (ABS)
3 97RGear shifting 3 98EFollowing distance 3 98cPower steering 3 98)Lane departure warning 3 98nElectronic Stability Control off
3 98bElectronic Stability Control and
Traction Control system 3 98kTraction Control system off
3 98!Preheating 3 99%Exhaust filter 3 99YAdBlue 3 99wTyre pressure monitoring
system 3 99IEngine oil pressure 3 99YLow fuel 3 100dImmobiliser 3 1008Exterior light 3 100CHigh beam 3 100fHigh beam assist 3 100fLED headlights 3 118>Fog light 3 100rRear fog light 3 100mCruise control 3 100 / Adaptive
cruise control 3 101CAdaptive cruise control 3 101AVehicle detected ahead 3 101LSpeed limiter 3 101LTraffic sign assistant 3 101hDoor open 3 101
Turn lights
O illuminates or flashes green.
Illuminates briefly The parking lights are switched on.
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 3 247, Fuses
3 254.
Turn signals 3 119.
Page 99 of 317

Instruments and controls979Warning
Stop. Do not continue your
journey. Consult a workshop.
Illuminates when the manual parking
brake is applied and ignition is
switched on 3 197.
Operate pedal - illuminates or flashes yellow.
Illuminates
Brake pedal must be depressed to release the electric parking brake
3 197
Clutch pedal must be depressed to
start the engine in Autostop mode.
Stop-start system 3 185.
Flashes
Clutch pedal must to be depressed to start the engine with the key 3 17,
3 183.
On some versions, the message to
operate the clutch pedal is indicated
in the Driver Information Centre
3 106.
Electric parking brake
m illuminates or flashes red.
Illuminates
Electric parking brake is applied
3 197.
Flashes
Electric parking brake is not fully
applied or released. Switch on
ignition, depress brake pedal and
attempt to reset the system by first
releasing and then applying the
electric parking brake. If m remains
flashing, do not drive and seek the
assistance of a workshop.
Electric parking brake fault
j illuminates or flashes yellow.Illuminates
Electric parking brake is operating
with degraded performance 3 197.
Flashes
Electric parking brake is in service
mode. Stop vehicle, apply and
release the electric parking brake to
reset.9 Warning
Have the cause of the fault
remedied immediately by a
workshop.
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
Page 100 of 317

98Instruments and controlsfault in the ABS. The brake system
remains operational but without ABS
regulation.
Antilock brake system 3 196.
Gear shifting R with the number of a higher gear is
indicated, when upshifting is
recommended for fuel saving
reasons.
Power steering
c illuminates yellow.
Illuminates with power steering
reduced
Power steering is reduced due to
overheating of the system. Control
indicator extinguishes when the
system has cooled down.
Stop-start system 3 185.
Illuminates with power steering
disabled
Failure in the power steering system.
Consult a workshop.Following distance
E indicates the following distance
setting of the alert timing sensitivity
for the forward collision alert using
filled distance bars.
Forward collision alert 3 212.
Lane departure warning ) illuminates green or flashes yellow.
Illuminates green
System is switched on and ready to
operate.
Flashes yellow
System recognizes an unintended
lane change.
Electronic Stability Controloff
n illuminates yellow.
The system is deactivated.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 3 200,
Traction Control system 3 199.
Traction Control system off k illuminates yellow.
The system is deactivated.
Page 101 of 317

Instruments and controls99Preheating
! illuminates yellow.
Preheating is activated. Only
activates when outside temperature
is low.
Exhaust filter % illuminates or flashes yellow.
The exhaust filter requires cleaning.
Continue driving until %
extinguishes. If possible, do not allow engine speed to drop below
2000 rpm.
Illuminates
The exhaust filter is full. Start cleaning
process as soon as possible.
Flashes
The maximum filling level of the filter
is reached. Start cleaning process
immediately to avoid damage to the
engine.
Exhaust filter 3 188, Stop-start
system 3 185.AdBlue
Y flashes yellow.
AdBlue level is low. Refill AdBlue soon to avoid prevention of the
engine start.
AdBlue 3 190.
Tyre pressure monitoring
system
w illuminates or flashes yellow.
Illuminates
Tyre pressure loss. Stop immediately
and check tyre pressure.
Flashes
Fault in system or tyre without
pressure sensor mounted (e.g. spare wheel). After 60-90 seconds the
control indicator illuminates
continuously. Consult a workshop.
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. 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 102 of 317

100Instruments 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.
Keep engine turned off and let the
vehicle be towed to a workshop.
Low fuel Y illuminates or flashes yellow.
Illuminates
Level in fuel tank is too low.
Flashes
Fuel used up. Refuel immediately.
Never run the tank dry.
Refuelling 3 231.
Catalytic converter 3 189.
Bleeding the diesel fuel system
3 246.
Immobiliser
d flashes yellow.
Fault in the immobiliser system. The
engine cannot be started.
Exterior light 8 illuminates green.
The exterior lights are on 3 114.
High beam C illuminates blue.
Illuminates when high beam is on,
during headlight flash 3 115 , or when
high beam is on with high beam assist
3 115.
High beam assist
f illuminates green.
The high beam assist is activated
3 118.LED headlights
f illuminates or flashes yellow.
Illuminates
Fault in the system.
Seek the assistance of a workshop.
Flashes
System is switched to symmetrical
low beam.
Control indicator f flashes for approx.
four seconds after the ignition is
switched on as a reminder for
symmetrical headlight 3 117.
Front fog lights
> illuminates green.
The front fog lights are on 3 119.
Rear fog light r illuminates yellow.
The rear fog light is on 3 120.
Cruise control
m illuminates white or green.
Page 111 of 317

Instruments and controls109Personalization By Driver:
Activates or deactivates the
personalisation function.
Auto Wipe in Reverse Gear :
Activates or deactivates
automatic switching on of the
rear window wiper when reverse gear is engaged.
● Lighting
Vehicle Locator Lights : Activates
or deactivates the entry lighting.
Exit Lighting : Activates or
deactivates and changes the
duration of exit lighting.
● Power Door Locks
Unlocked Door Anti Lock Out :
Activates or deactivates the door locking function while a door isopen.
Auto Door Lock : Activates or
deactivates the automatic door
unlocking function after switching off ignition. Activates or
deactivates the automatic door
locking function after driving-off.Delayed Door Lock : Activates or
deactivates the delayed door
locking function.
● Remote Lock, Unlock, Start
Remote Unlock Light Feedback :
Activates or deactivates the
hazard warning flasher feedback
whilst unlocking.
Remote Lock Feedback :
Changes what kind of feedback
is given when locking the vehicle.
Remote Door Unlock : Changes
the configuration to unlock only
the driver's door or the whole
vehicle whilst unlocking.
Relock Remotely Unlocked
Doors : Activates or deactivates
the automatic relock function
after unlocking without opening
the vehicle.Telematics service
OnStar
OnStar is a personal connectivity and service assistant with integrated
Wi-Fi hotspot. The OnStar service is available 24 hours a day, seven days
a week.
Note
OnStar is not available for all
markets. For further information,
contact your workshop.
Note
In order to be available and
operational, OnStar needs a valid
OnStar subscription, functioning
vehicle electrics, mobile service and
GPS satellite link.
To activate the OnStar services and
set up an account, press Z and speak
with an advisor.