116Instruments 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 oil level before seeking the
assistance of a workshop 3 261.
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 3 248.
Catalytic converter 3 205.
Bleeding the diesel fuel system
3 266.
Immobiliser d flashes yellow.
Fault in the immobiliser system. The
engine cannot be started.
Exterior light 8 illuminates green.
The exterior lights are on 3 130.
High beam
C illuminates blue.
Illuminates when high beam is on,
during headlight flash 3 131 , or when
high beam is on with high beam assist
3 131.
High beam assist f illuminates green.
The high beam assist is activated
3 134.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 3 133.
Fog light > illuminates green.
The front fog lights are on 3 135.
Rear fog light
r illuminates yellow.
The rear fog light is on 3 136.
Cruise control m illuminates white or green.
Instruments and controls123Messages in the Info-DisplaySome important messages appear
additionally in the Info-Display. Some
messages only pop-up for a few
seconds.
Warning chimes
If several warnings appear at the same time, only one warning chime
will sound.
When starting the engine or whilst driving
The warning chime regarding
unfastened seat belts has priority
over any other warning chime.
● If seat belt is not fastened.
● If a door or the tailgate is not fully
closed when starting-off.
● If a certain speed is exceeded with parking brake applied.
● If adaptive cruise control deactivates automatically.
● If approaching a vehicle ahead too closely.●If a programmed speed or speed
limit is exceeded.
● If a warning message appears in the Driver Information Centre.
● If the parking assist detects an object.
● If an unintended lane change occurs.
● If reverse gear is engaged and the rear carrier system is
extended.
● If the exhaust filter has reached the maximum filling level.
When the vehicle is parked and/or
the driver's door is opened
● With exterior lights on.
During an Autostop ● If the driver's door is opened.
● If any condition for an autostart is
not fulfilled.Battery voltage
When the vehicle battery voltage is
running low, a warning message 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 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.
Instruments and controls125Personalization 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.
130LightingLightingExterior lighting.......................... 130
Light switch .............................. 130
Automatic light control .............131
High beam ............................... 131
High beam assist .....................131
Headlight flash ......................... 132
Headlight range adjustment ....132
Headlights when driving abroad .................................... 133
Daytime running lights .............133
LED headlights ........................ 134
Hazard warning flashers ..........135
Turn lights ................................ 135
Front fog lights ......................... 135
Rear fog light ........................... 136
Parking lights ........................... 136
Reversing lights .......................136
Misted light covers ...................136
Interior lighting ........................... 137
Instrument panel illumination control ..................................... 137
Interior lights ............................ 137
Reading lights .......................... 138
Sunvisor lights ......................... 138Lighting features ........................138
Centre console lighting ............138
Entry lighting ............................ 138
Exit lighting .............................. 138
Battery discharge protection ....139Exterior lighting
Light switch
Turn light switch:
AUTO:automatic light control
switches automatically
between daytime running
light and headlight8:sidelights9:headlights
When switching on the ignition,
automatic light control is active.
Control indicator 8 3 116.
Lighting135Fault in LED headlight system
When the system detects a failure in
the LED headlight system, f
illuminates and a warning is displayed in the Driver Information Centre.
Hazard warning flashers
Operated by pressing ¨.
In the event of an accident with airbag
deployment the hazard warning
flashers are activated automatically.
Turn lightslever up:right turn signallever down:left turn signal
A resistance point can be felt when
moving the lever.
Constant flashing is activated when
the lever is being moved beyond the
resistance point. It is deactivated
when the steering wheel is moved in
the opposite direction or lever is
manually moved back to its neutral
position.
Activate temporary flashing by
holding the lever just before the
resistance point. Turning lights will
flash until lever is being released.
To activate three flashes, tap the
lever briefly without passing the
resistance point.
When a trailer is connected, turn
signal flashes six times when
pressing the lever until resistance is
felt and then releasing.
Front fog lights
Operated by pressing >.
Driving and operating213Brakes
The brake system comprises two
independent brake circuits.
If a brake circuit fails, the vehicle can
still be braked using the other brake
circuit. However, braking effect is
achieved only when the brake pedal
is depressed firmly. Considerably
more force is needed for this. The
braking distance is extended. Seek the assistance of a workshop before
continuing your journey.
When the engine is not running, the
support of the brake servo unit
disappears once the brake pedal has
been depressed once or twice.
Braking effect is not reduced, but
braking requires significantly greater
force. It is especially important to bear this in mind when being towed.
Control indicator R 3 112.
Antilock brake system
Antilock brake system (ABS)
prevents the wheels from locking.ABS starts to regulate brake pressure as soon as a wheel shows a tendency to lock. The vehicle remains
steerable, even during hard braking.
ABS control is made apparent
through a pulse in the brake pedal
and the noise of the regulation
process.
For optimum braking, keep the brake
pedal fully depressed throughout the
braking process, despite the fact that
the pedal is pulsating. Do not reduce
the pressure on the pedal.
After starting off the system performs
a self-test which may be audible.
Control indicator u 3 113.
Adaptive brake light During full braking, all three brake
lights flash for the duration of ABS
control.
Fault9 Warning
If there is a fault in the ABS, the
wheels may be liable to lock due
to braking that is heavier than
normal. The advantages of ABS are no longer available. During
hard braking, the vehicle can no longer be steered and may
swerve.
Have the cause of the fault remedied
by a workshop.
Parking brake
9 Warning
Before leaving the vehicle, check
parking brake status. Control
indicator R (manual parking
brake) or m (electrical parking
brake) must illuminate constantly.
Driving and operating223Adaptive cruise control automatically
decelerates the vehicle when
approaching a slower moving vehicle.
It then adjusts the vehicle speed to
follow the vehicle ahead at the
selected following distance. The
vehicle speed increases or decreases to follow the vehicle in front, but willnot exceed the set speed. It may
apply limited braking with activated
brake lights.
The adaptive cruise control can store
and maintain speeds over approx.
50 km/h and brakes automatically to
follow a slower vehicle driving ahead
down to a minimum speed of
30 km/h.
Adaptive cruise control uses a radar
sensor to detect the vehicles ahead.
If no vehicle is detected in the driving path, the adaptive cruise control will
behave like a traditional cruise
control.
For safety reasons, the system
cannot be activated before the brake
pedal has been depressed once after
switching on ignition. Activation in first gear is not possible.
Adaptive cruise control is mainly
advised to be used on long straight
roads, e.g. highways or country roads
with steady traffic. Do not use the
system if it is not advisable to
maintain a constant speed.
Control indicator A 3 117, m 3 116.9 Warning
The complete driver attention is
always required while driving with adaptive cruise control. The driver stays fully in control of the vehicle
because the brake pedal, the
accelerator pedal and the cancel
switch have priority over any
adaptive cruise control operation.
Switching on the system
Press C to switch on adaptive cruise
control. The control indicator m
illuminates white. Additionally C
appears in the Driver Information
Centre.
Activation of the functionality by
setting the speed
Adaptive cruise control can be
activated between 50 km/h and
180 km/h.
240Driving and operatingWarning symbols
Warning symbols are indicated as
triangles 9 on the picture which
shows obstacles detected by the rear
sensors of the parking assist.
Additionally 9 appears on the top line
of the Info-Display with the warning to
check the vehicle surrounding.
Deactivation
The camera is switched off when a
certain forward speed is exceeded or
if reverse gear is not engaged for
approx. 15 seconds. Rear view
camera can be manually deactivated
in the vehicle personalisation menu in the Info-Display. Select the relevant
setting in Settings .
Vehicle personalisation 3 124.Deactivation of guiding lines and
warning symbols
7'' R 4.0 IntelliLink Activation or
deactivation of the visual guiding lines and the warning symbols can be
changed via touch buttons in the
lower zone of the display.
Info-Display 3 121.
Vehicle personalisation 3 124.
Fault
Fault messages are displayed with a
9 on the top line of the Info-Display.
The rear view camera may not
operate properly when:
● The surrounding area is dark.● The sun or the beam of headlights is shining directly into
the camera lens.
● Ice, snow, mud, or anything else covers the camera lens. Clean
the lens, rinse it with water, and
wipe it with a soft cloth.
● The tailgate is not closed correctly.
● The vehicle had a rear-end accident.
● There are extreme temperature changes.
Traffic sign assistant
Functionality The traffic sign assistant system
detects designated traffic signs via a
front camera and displays them in the
Driver Information Centre.