Page 115 of 267

Instruments and controls113warning chime when the
electronic key remains in the
vehicle.OnStar
OnStar is a personal connectivity and mobility 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 OnStar advisor.
Depending on the equipment of the
vehicle, the following services are
available:
● OnStar emergency services and support in the case of a vehicle
breakdown
● Wi-Fi hotspot● OnStar smartphone application
● OnStar remote services, e.g. location of the vehicle, activation
of horn and lights, control of
central locking system
● Stolen vehicle assistance
● Vehicle health check
● Destination download
Notice
All functions requiring data
connection to the vehicle are no
longer available if the vehicle ignition
has not been turned on for ten days.
OnStar buttons
Page 136 of 267

134Climate controlSystem on or off ON/OFFCooling, fan and automatic mode can
be switched off by pressing ON/OFF.
When the system is deactivated, the
LED in the button ON/OFF is off.
Activation by pressing ON/OFF, A/C
or AUTO . Activation is indicated by
the LED in the button.
Manual settings Climate control system settings canbe changed by activating the buttons
and rotary knobs as described below.
Changing a setting will deactivate the
automatic mode.Fan speed Z
Press left button to decrease or right
button to increase fan speed. The fan speed is indicated by the number of
LEDs in the button.
Pressing the left button for longer: fan and cooling are switched off.
Pressing the right button for longer:
the fan runs at maximum speed.
To return to automatic mode: Press
AUTO .
Air distribution l, M , K
Press the appropriate button for the
desired adjustment. Activation is
indicated by illumination of the LED in
the button.
l:to windscreen and front door
windows (air conditioning is
activated in the background to
help preventing windows from
fogging)M:to head area via adjustable air ventsK:to foot well
All combinations are possible.
Return to automatic air distribution:
press AUTO .
Page 143 of 267

Driving and operating141functions remain active until driver's
door is opened, provided the ignition
was on previously.Emergency shut off during driving
Press Engine Start/Stop for longer
than 2 seconds or press twice briefly within 5 seconds 3 142.
Steering wheel lock
The steering wheel lock activates
automatically when:
● The vehicle is stationary.
● The ignition has been switched off.
● The driver's door is opened.
To release steering wheel lock, open
and close driver's door and switch on accessory mode or start the engine
directly.
9 Warning
If the vehicle battery is discharged,
the vehicle must not be towed,
tow-started or jump-started as the
steering wheel lock cannot be
disengaged.
Operation on vehicles with
electronic key system in case of
failure
If either the electronic key fails or the
battery of the electronic key is weak,
the Driver Information Centre may
display No Remote Detected or
Replace Battery in Remote Key when
you try to start the vehicle.
Place the electronic key solely
centred in the transmitter area in
longitudinal direction flat with buttons
upside as shown in the illustration.
Other objects, e.g. other keys,
transponder, tags, coins etc. must be removed from the centre console.
Depress the clutch pedal (manual
transmission) or the brake pedal
(automatic transmission or manual
transmission automated) and press
Engine Start/Stop .
To switch off the engine, press
Engine Start/Stop again. Remove the
electronic key from the centre
console.
This option is intended for
emergencies only. Replace the
electronic key battery as soon as
possible 3 21.
For unlocking or locking the doors,
see fault in radio remote control unit
or electronic key system 3 23.
Retained power off
The following electronic systems can
work until the driver's door is opened
or for 10 minutes after the ignition is
switched off:
● power windows
● sunroof
● power outlets
Page 170 of 267

168Driving and operatingGeneral information9Warning
Forward collision alert is just a
warning system and does not
apply the brakes. When
approaching a vehicle ahead too
rapidly, it may not provide you
enough time to avoid a collision.
The driver accepts full
responsibility for the appropriate
following distance based on traffic, weather and visibility conditions.
The complete attention of the
driver is always required while
driving. The driver must always be
ready to take action and apply the
brakes.
System limitations
The system is designed to warn on vehicles only, but may react also to
other objects.
In the following cases, forward
collision alert may not detect a vehicle ahead or sensor performance is
limited:
● on winding roads
● when weather limits visibility, such as fog, rain, or snow
● when the sensor is blocked by snow, ice, slush, mud, dirt,
windscreen damage or affected
by foreign items, e.g. stickers
Following distance indication
The following distance indication
displays the distance to a preceding
moving vehicle. The front camera in
the windscreen is used to detect the
distance of a vehicle directly ahead in
the vehicle's path. It is active at
speeds above 25 mph.
When a preceding vehicle is detected
ahead, the distance is indicated in
seconds, displayed on a page in the
Driver Information Centre.On Midlevel display, choose Info
Menu ? via MENU on the turn
signal lever and turn the adjuster wheel to choose following distance
indication page, 3 97
On Uplevel display, select Info menu
via steering wheel buttons and press o to select following distance
indication 3 97.
The minimum indicated distance is 0.5 seconds.
If there is no vehicle ahead or the
vehicle ahead is out of range, two
dashes will be displayed: -.- sec.
Page 183 of 267

Driving and operating181Display settings
Brightness and contrast can be set by
tapping the touch screen display
when rear view camera is active.
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 Colour-Info-Display. Select the
relevant setting in Settings, I Vehicle .
Deactivation of guiding lines and
warning symbols7'' Colour-Info-Display: Activation or
deactivation of the visual guiding lines and the warning symbols can be
changed by touch buttons in the lower
zone of the display.
8'' Colour-Info-Display: Activation or
deactivation of the visual guiding lines and the warning symbols can be
changed in the Settings menu in the
Info-Display. Select the relevant
setting in Settings, I Vehicle .
Info-Display 3 102.
Vehicle personalisation 3 106.
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 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 vehicle is towing a trailer.
● The vehicle had a rear end accident.
● There are extreme temperature changes.
Traffic sign assistant Functionality
Traffic sign assistant detects
designated traffic signs via a front
camera and displays them in the
Driver Information Centre.
If the vehicle is equipped with an
embedded navigation system, traffic
signs fom data maps may be included additionally.
Page 185 of 267

Driving and operating183
On Midlevel display, choose Info
Menu ? via MENU and select
traffic sign assistant page with the adjuster wheel on the turn signal lever
3 97.
On Uplevel display, choose Info
Menu via right steering wheel buttons
and press P or Q to select traffic
sign assistant page 3 97.
When another page on the Driver Information Centre menu was
selected and then traffic sign
assistant page is chosen again, the
last recognised traffic sign will be
displayed.
Alert function The alert function can be activated or
deactivated in the setting menu of the
traffic sign assistant page.Once activated and when the traffic
sign detection page is currently not
displayed, newly detected speed limit
and no passing signs are displayed
as popup alerts in the Driver
Information Centre.
On Midlevel Display, when traffic sign assistant page is displayed, press
SET/CLR on the turn signal lever.
Select Alerts ON or Alerts OFF by
turning the adjuster wheel and press
SET/CLR .
On Uplevel Display, when traffic sign
assistant page is displayed, press q
on the steering wheel controls.