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100Instruments and controlsPull lever. Washer fluid is sprayed
onto the windscreen and the wiper wipes a few times.
If the headlights are on, washer fluid
is also sprayed onto the headlights,
provided that the lever is pulled
sufficiently long. Afterwards the
headlight washer system is
inoperable for 5 wash cycles or until
engine or headlights have been
switched off and on again.
Rear window wiper/washerPress the rocker switch to activate the
rear window wiper:upper position:continuous
operationlower position:intermittent
operationmiddle position:off
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 3 129.
The rear window washer system is deactivated when the fluid level is too
low.
Outside temperature
Page 106 of 307
104Instruments and controlsWarning lights, gauges
and indicators
Instrument cluster
In some versions, the needles of the
instruments briefly rotate to the end
position when the ignition is switched
on.
Speedometer
Indicates vehicle speed.
Odometer
The bottom line displays the recordeddistance in miles.
Trip odometer The top line displays the recordeddistance since the last reset.
To reset, press SET/CLR on the turn
signal lever for a few seconds
3 116.
Some versions are equipped with a
reset knob between speedometer
and Driver Information Centre: to
reset, press and hold the knob for a
few seconds with the ignition on.
Trip odometer counts up to a distance
of 2000 miles and then restarts at 0.
Tachometer
Displays the engine speed.
Drive in a low engine speed range for each gear as much as possible.
Caution
If the needle is in the red warning
zone, the maximum permitted
engine speed is exceeded. Engine at risk.
Page 112 of 307

110Instruments and controlsAVehicle detected ahead 3 116hDoor open 3 116
Turn signal
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 3 232, Fuses
3 240.
Turn signals 3 145.
Seat belt reminder
Seat belt reminder on front seats X for driver's seat or for front
passenger seat illuminates or flashes
red.
Illuminates
After the ignition has been switched
on until the seat belt has been
fastened.
Flashes
After having started the engine, for a
maximum of 100 seconds until the
seat belt has been fastened.
Fastening the seat belt 3 51.
Seat belt status on rear seats
> or X in the Driver Information
Centre flashes or illuminates.
Illuminates
After having started the engine, for a
minimum of 35 seconds until the seat
belt has been fastened.
If an unfastened seat belt is fastened
whilst driving.
Flashes
After starting-off, when the seat belt is unfastened.
Fastening the seat belt 3 51.
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 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.
Page 117 of 307

Instruments and controls1153. Move out of the flow of traffic asquickly 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 steeringwheel lock could engage
unexpectedly.
Check oil level before seeking the
assistance of a workshop 3 226.
Low fuel
i illuminates or flashes yellow.
Illuminates
Level in fuel tank is too low.
Flashes
Fuel used up. Refuel immediately.
Never run the tank dry.
Catalytic converter 3 165.
Bleeding the diesel fuel system
3 231.
Immobiliser d flashes yellow.
Fault in the immobiliser system. The
engine cannot be started.
Reduced engine power
# illuminates yellow.
The engine power is limited. Consult
a workshop.
Exterior light8 illuminates green.
The exterior lights are on 3 138.
High beam
C illuminates blue.Illuminates when high beam is on,
during headlight flash 3 140 , or when
high beam is on with high beam assist
or intelligent light range 3 142.
High beam assist
l illuminates green.
The high beam assist or intelligent light range is activated 3 140,
3 142.
Adaptive forward lighting f illuminates or flashes yellow.
Illuminates
Fault in system.
Seek the assistance of a workshop.
Flashes
System switched to symmetrical low
beam.
Control indicator f flashes for approx.
four seconds after the ignition is
switched on as a reminder that the
system has been activated 3 141.
Automatic light control 3 139.
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116Instruments and controlsFog light> illuminates green.
The front fog lights are on 3 146.
Rear fog light r illuminates yellow.
The rear fog light is on 3 146.
Low washer fluid
G illuminates yellow.
The washer fluid level is low.
Washer fluid 3 229.
Cruise control m illuminates white or green.
Illuminates white The system is on.
Illuminates green
Cruise control is active.
Cruise control 3 179.Adaptive cruise control
m illuminates white or green.
Illuminates white
The system is on.
Illuminates green
Adaptive cruise control is active.
Adaptive cruise control 3 182.
Vehicle detected ahead
A illuminates green.
A vehicle ahead is detected in the
same lane.
Adaptive cruise control 3 182,
Forward collision alert 3 188.
Door open h illuminates red.
A door or the tailgate is open.Information displays
Driver Information Centre The Driver Information Centre is
located in the instrument cluster
between speedometer and
tachometer. It is available as
Midlevel-Display or Uplevel-Combi-
Display.
Midlevel-Display indicates:
● overall odometer
● trip odometer
● some control indicators
● vehicle information
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126Instruments and controlsWhen the vehicle is parked and/orthe driver's door is opened
● With exterior lights on.
During an Autostop ● If the driver's door is opened.
Battery voltage
When the vehicle battery voltage is
running low, a warning message or
warning code 174 will appear in the
Driver Information Centre.
1. Switch off immediately any electrical consumers which are
not required for a safe ride, e.g.
seat heating, heated rear window
or other main consumers.
2. Charge the vehicle battery by driving continuously for a while or
by using a charging device.
The warning message or warning
code will disappear after the engine
has been started two times
consecutively without a voltage drop.
If the vehicle battery cannot be
recharged, have the cause of the fault
remedied by a workshop.Trip computer
The menus and functions can be
selected via the buttons on the turn
signal lever 3 116.
Press MENU to select the Trip/Fuel
Information Menu , or select W on
the Uplevel-Combi-Display.
Trip/Fuel Information Menuon
Uplevel-Combi-Display
Turn the adjuster wheel to select the
submenus:
Page 135 of 307

Instruments and controls133system will take over brake
control, warn by chimes only or is
deactivated completely.
Side Blind Zone Alert : Activates
or deactivates the side blind spot alert system.
● 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
Open Door Anti Lock Out :
Activates or deactivates the
automatic door locking function
while a door is open.
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.
Delay Door Lock : Activates or
deactivates the delayed door
locking function.● Remote Lock/Unlock/Start
Remote Lock Feedback :
Activates or deactivates the
hazard warning flasher feedback
whilst locking.
Remote Unlock Feedback :
Activates or deactivates the
hazard warning flasher feedback whilst unlocking.
Remote Door Unlock : Changes
the configuration to unlock only
the driver's door or the entire
vehicle whilst unlocking.
Relock Remotely Unlocked
Doors : Activates or deactivates
the automatic relock function
after unlocking without opening
the vehicle.
● Return to Factory Settings? :
Resets all settings to the default settings.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.
Notice
OnStar is not available for all
markets. For further information,
contact your workshop.
Notice
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.
Depending on the equipment of the
vehicle, the following services are available:
● Emergency services and support
in the case of a vehicle
breakdown
● Wi-Fi hotspot
Page 136 of 307

134Instruments and controls● Smartphone application
● Remote control, e.g. location of the vehicle, activation of horn and
lights, control of central locking
system
● Stolen vehicle assistance
● Vehicle diagnostics
● Destination download
Notice
The OnStar module of the vehicle is
deactivated after ten days without an
ignition cycle. Functions requiring a
data connection will be available
again after switching on the ignition.
OnStar buttonsNotice
Depending on the equipment, the
OnStar buttons can also be
integrated in the rear view mirror.
Privacy button
Press and hold j until an audio
message is heard to activate or
deactivate the transmission of the
vehicle location.
Press j to answer a call or to end a
call to an OnStar advisor.
Press j to access the Wi-Fi settings.
OnStar button
Press Z to establish a connection to
an OnStar advisor.
SOS button
Press [ to establish a priority
emergency connection to a specially trained emergency advisor.
Status light
Green: The system is ready.
Green flashing: The system is on a
call.
Red: A problem arose.
Off: System is off.Red / green flashing for a short period of time: Transmission of the vehicle
location has been deactivated.
OnStar services
OnStar emergency services
OnStar emergency provides a service with specially trained emergency
advisors for contact, assistance and
information during an emergency.
In the case of an emergency situation
including vehicle breakdown, a flat
tyre or empty fuel tank, press [ and
talk to the advisor. The advisor then
contacts emergency or assistance
service providers and directs them to
your vehicle.
In the case of an accident with
activation of airbags or belt
tensioners, an automatic emergency
call is established. The advisor is
immediately connected to your
vehicle to see whether help is
needed.
OnStar Wi-Fi hotspot
The Wi-Fi hotspot of the vehicle
provides internet connectivity through
the 4G/LTE mobile network.