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108Instruments and controlsTelematics 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.
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 areavailable:
● Emergency services and support
in the case of a vehicle
breakdown
● Wi-Fi hotspot
● 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 buttons
Notice
Depending on the equipment, the
OnStar buttons can also be
integrated in the rear view mirror.
Privacy button
Press and hold j until a 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 advisor.
Press j to access the Wi-Fi settings.
Service button
Press Z to establish a connection to
an advisor.
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112Instruments and controls9Danger
The service is only available for
markets where it is legally required and activated. Furthermore, the
manual and the automatic
emergency call function depend
on the availability of the
emergency centres and the
infrastructure in the country.
Notice
In order to be available and
operational, the system requires
functioning vehicle electrics, mobile
service and GLONASS satellite link.
Depending on equipment, a backup
battery is used.
Control buttons
SOS button K
Press K and after a prompt press
again to establish an emergency
connection.
TECT button J
Press J for cancellation of a call or for
service (technician use only).
Status LED
The system provides feedback via
voice messages and an LED.
Green:The system is ready or
within the recall time,
during which the advisor
can call back after an
established connection
(up to approx. two hours,
also possible with ignition
off).Green
flashing:The system is dialling,
data transmitting or a
voice connection is
established.Red:The system is booting up
for maximum 15 seconds
after switching on ignition,
then the LED turns green. If the LED stays red or
turns from green to red, a
problem arose seek the
assistance of a workshop.Red
flashing:Call is not possible, e.g.
because of unavailable
mobile network.Red/
green
flashing:System is in test mode.
Do not press any button
and wait until time-out.Off:System is off.
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132Climate control
If the minimum temperature Lo is set,
the climate control system runs at
maximum cooling, if cooling n is
switched on.
If the maximum temperature Hi is set,
the climate control system runs at
maximum heating.
Notice
If n is switched on, reducing the set
cabin temperature can cause the
engine to restart from an Autostop or inhibit an Autostop.
Stop-start system 3 140.
Demisting and defrosting the
windows V
●
Press V. The LED in the button
illuminates to indicate activation.
● Temperature and air distribution are set automatically and the fan
runs at high speed.
● Switch on heated rear window Ü.
● To return to previous mode: press V. To return to automatic
mode: press AUTO.
Setting of automatic rear window heating can be changed in the
Settings menu in the Info-Display.
Vehicle personalisation 3 103.
Notice
If V is pressed while the engine is
running, an Autostop will be inhibited
until V is pressed again.
If s is pressed with the fan switched
on and the engine running, an
Autostop will be inhibited until s is
pressed again or until the fan is
switched off.
If V is pressed while the engine is
in an Autostop, the engine will restart automatically.
If s is pressed with the fan switched
on while the engine is in an
Autostop, the engine will restart
automatically.
Stop-start system 3 140.
Manual settings Climate control system settings can
be changed by activating the buttons
and rotary knobs as follows.
Changing a setting will deactivate the automatic mode.
Page 231 of 293

Vehicle care229values provided on the tyre
information label and tyre pressure
chart are valid for cold tyres, which
means at 20 °C.
The pressure increases by nearly
1.5 psi for a 10 °C temperature
increase. This must be considered
when warm tyres are checked.
The tyre pressure value displayed in
the Driver Information Centre shows
the real tyre pressure. A cooled down
tyre will show a decreased value,
which does not indicate an air leak.
Tyre pressure monitoringsystem
The tyre pressure monitoring system
(TPMS) checks the pressure of all
four tyres once a minute when vehicle speed exceeds a certain limit.Caution
Tyre pressure monitoring system
warns only about low tyre pressure condition and does not replace
regular tyre maintenance by the
driver.
All wheels must be equipped with pressure sensors and the tyres must
have the prescribed pressure.
Notice
In countries where the tyre pressure
monitoring system is legally
required, the use of wheels without
pressure sensors will invalidate the
vehicle operating permit.
The current tyre pressures can be
shown in the Vehicle Information
Menu in the Driver Information
Centre.
The menu can be selected by the buttons on the turn signal lever.Press MENU to select the Vehicle
Information Menu X.
Turn the adjuster wheel to select the
tyre pressure monitoring system.
System status and pressure warnings
are displayed by a message with the
corresponding tyre flashing in the
Driver Information Centre.
The system considers the tyre
temperature for the warnings.
Page 242 of 293

240Vehicle care
Front arm position of the lifting
platform at the underbody.
Spare wheel Some vehicles are equipped with a
tyre repair kit instead of a spare
wheel.
If mounting a spare wheel, which is
different from the other wheels, this
wheel might be classified as a
temporary spare wheel and the
corresponding speed limits apply,
even though no label indicates this.
Seek the assistance of a workshop to
check the applicable speed limit.
The spare wheel has always a steel
rim.Caution
The use of a spare wheel that is smaller than the other wheels or in combination with winter tyres
could affect driveability. Have the defective tyre replaced as soon as
possible.
The spare wheel is located in the load
compartment beneath the floor
covering. It is secured with a wing nut.
To remove: 1. Open the floor cover.
2. Only 3-door hatchback: remove rear storage by pressing both
buttons. Fold down cover and
extract storage upwards.
3. The spare wheel is secured with a
wing nut. Loosen nut, remove
conus (only 3-door hatchback) to
take out the spare wheel.
Under the spare wheel there is the box with vehicle tools.
4. When, after a wheel change, no wheel is placed in the spare wheel
well, secure the tool box by
tightening the wing nut and close
the floor cover.