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Driving and operating107Starting the engine
Turn key to position 1 to release the
steering wheel lock.
Operate clutch and brake pedal. Do not operate the accelerator pedal. Turn key briefly to position 3 and
release: an automatic procedure
operates the starter after a brief
delay, until the engine is running. See
"Automatic Starter Control".
Before restarting or to switch off the
engine, turn the key back to position
0 .
During an Autostop, the engine can
be started by depressing the clutch
pedal.
Starting the vehicle at low
temperatures
The start of the engine without
additional heaters is possible down to -30 °C.
Required is an engine oil with the
correct viscosity, the correct fuel,
performed services and a sufficiently
charged vehicle battery.
Automatic starter control This function controls the engine
starting procedure. The driver does
not need to hold the key in position 3.
Once applied, the system will go on
starting automatically until the engine
is running. Because of the checking
procedure, the engine starts running after a short delay.
Possible reasons for a non-starting engine:
● clutch pedal not operated
● timeout occurredTurbo engine warm-up
Upon start-up, engine available
torque may be limited for a short time, especially when the engine
temperature is cold. The limitation is
to allow the lubrication system to fully
protect the engine.
Overrun cut-off
The fuel supply is automatically cut off
during overrun, i.e. when the vehicle
is driven with a gear engaged but
accelerator is released.
Depending on driving conditions, the
overrun cut-off may be deactivated.
Stop-start system The stop-start system helps to save
fuel and to reduce the exhaust
emissions. When conditions allow, it
switches off the engine as soon as the
vehicle is at a low speed or at a
standstill, e.g. at a traffic light or in a
traffic jam.
The engine is started automatically as soon as the clutch is depressed.
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110Driving and operating● Always apply the parkingbrake. Activate the manual
parking brake without pressing
the release button. Apply as
firmly as possible on a downhill
slope or uphill slope. Depress brake pedal at the same time to reduce operating force.
● Switch off the engine.
● If the vehicle is on a level surface or uphill slope, engage
first gear before removing the ignition key. On an uphill slope,
turn the front wheels away from
the kerb.
If the vehicle is on a downhill
slope, engage reverse gear
before removing the ignition
key. Turn the front wheels
towards the kerb.
● Close the windows and the sunroof.
● Remove the ignition key from the ignition switch. Turn the
steering wheel until the
steering wheel lock is felt to
engage.● Lock the vehicle.
● Activate the anti-theft alarm system.
● The engine cooling fans may run
after the engine has been
switched off 3 128.Caution
After running at high engine
speeds or with high engine loads,
operate the engine briefly at a low load or run in neutral for
approx. 30 seconds before
switching off, in order to protect
the turbocharger.
Note
In the event of an accident with
airbag deployment, the engine is
switched off automatically if the
vehicle comes to a standstill within a
certain time.
Engine exhaust9 Danger
Engine exhaust gases contain
poisonous carbon monoxide,
which is colourless and odourless and could be fatal if inhaled.
If exhaust gases enter the interior
of the vehicle, open the windows.
Have the cause of the fault
rectified by a workshop.
Avoid driving with an open load
compartment, otherwise exhaust
gases could enter the vehicle.
Catalytic converter
The catalytic converter reduces the
amount of harmful substances in the
exhaust gases.
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Driving and operating115Electronic Stability Control
Electronic Stability Control (ESC)
improves driving stability when
necessary, regardless of the type of
road surface or tyre grip.
As soon as the vehicle starts to
swerve (understeer / oversteer),
engine output is reduced and the wheels are braked individually.
ESC operates in combination with the Traction Control system (TC). It
prevents the drive wheels from
spinning.
ESC is operational after each engine
start as soon as the control indicator
b extinguishes.
When ESC operates b flashes.
9 Warning
Do not let this special safety
feature tempt you into taking risks
when driving.
Adapt speed to the road
conditions.
Control indicator b 3 72.
Deactivation
For very high-performance driving
ESC can be deactivated:
Press and hold t for a minimum of
5 seconds. Control indicator t
illuminates.
ESC is reactivated by pressing t
again. If the TC system was
previously disabled, both TC and
ESC are reactivated. k and t
extinguish when TC and ESC are reactivated.
ESC is also reactivated the next time
the ignition is switched on.
Fault
If there is a fault in the system, the
control indicator b illuminates
continuously and a warning code appears in the Driver Information
Centre. The system is not
operational.
Have the cause of the fault remedied
by a workshop.
City mode City mode is a feature which enables
increased steering assistance during
lower speed conditions, e.g. city
traffic or parking. Steering assistance
is increased for greater convenience.
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116Driving and operatingActivation
Press B when engine is running. The
system works from standstill up to
60 km/h, and also in reverse gear. Above this speed, the system
changes to normal mode. When
activated, City mode engages
automatically below 60 km/h.
An illuminated LED in the City mode
button indicates that the system is
active and a message pops-up in the
Driver Information Centre.
City mode remains active during an
Autostop, but is only operational when the engine is running.
Stop-start system 3 107.
Deactivation
Press B. The LED in the button
extinguishes.
Each time the engine is started, City
mode is deactivated.
Overload If the steering in City mode is heavily
loaded, e.g. in long parking
manoeuvres or heavy city traffic, the
system is deactivated for overheat
protection. Steering operates in
normal mode until City mode
activates automatically.
FaultIn the event of a fault in the system,
control indicator c illuminates.
Vehicle messages 3 81.
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Driving and operating121correct distance indication in the
upper part of these vehicles
cannot be guaranteed.
Objects with a very small reflection
cross-section, e.g. objects of
narrow size or soft materials, may
not be detected by the system.
Parking assist systems do not
detect objects outside the
detection range.
Lane departure warning
The lane departure warning system
observes the lane markings between
which the vehicle is driving via a front camera. The system detects lane
changes and warns the driver in the
event of an unintended lane change
via visual and acoustic signals.
Criteria for the detection of an
unintended lane change are:
● No operation of turn lights.
● No brake pedal operation.
● No active accelerator operation or speeding-up.
● No active steering.
If the driver is performing these
actions, no warning will be issued.
Activation
The lane departure warning system isactivated by pressing ). The
illuminated LED in the button
indicates that the system is switched
on. When control indicator ) in the
instrument cluster illuminates green, the system is ready to operate.
The system is only operable at
vehicle speeds above 56 km/h and if lane markings are available.
When the system recognises an
unintended lane change, control
indicator ) changes to yellow and
flashes. Simultaneously a chime
sound is activated.
Deactivation
The system is deactivated by
pressing ), the LED in the button
extinguishes.
At speeds below 56 km/h the system
is inoperable.
Fault
The lane departure warning system may not operate properly when:
● The windscreen is not clean.
● There are adverse environmental
conditions e.g. heavy rain, snow,
direct sunlight or shadows.
Page 144 of 191
142Vehicle careNo.Circuit1Tailgate2Transmission output speed
sensor3Heated rear window4Heated exterior mirror5Sunroof6Transmission control module7Engine control module8–9ABS10Body control module, voltage11Rear view camera12–13–14Engine control module/Trans‐
mission control module15Injection system/Starter16Fuel pumpNo.Circuit17Engine control module118Engine control module219Injection system/Ignition20Air conditioning system21Battery sensor22Electric steering column lock23Cooling fan low24–25Exterior mirror switch26Engine control module27Fuel system28–29Seat occupancy recognition30Headlight range adjustment31Horn32Front fog light33High beam leftNo.Circuit34High beam right35–36Rear wiper37Cornering light left38Washer system39Cornering light right40–41–42Starter 243Instrument panel44DC-DC converter45Starter 146ABS47Cooling fan high48Front wiper49Body control module/Retained
power off
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Vehicle care143After having changed defective fuses
close the fuse box cover and press
until it engages.
If the fuse box cover is not closed
correctly, malfunction may occur.
Instrument panel fuse box
The fuse box is located on the driver's
side behind a cover in the instrument
panel.
To open the compartment, compress
the locking tabs, fold cover down and
remove.
No.Circuit1Onstar2Air conditioning system3Instrument cluster4Transmission control module5Infotainment6–7Rear parking assist8Data link connection9Electric steering column lock10Sensing and Diagnostic module11DC transformer12–13–14Linear power module15Central locking system/Ignition
system16Ignition system
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144Vehicle careNo.Circuit17–18Instrument cluster19–20Headlight range adjustment21Power windows, front22Power windows, rear23–24–25Auxiliary power outlet26Sunroof27Central gateway module28Body control module 829Body control module 730Body control module 631Body control module 532Body control module 433Body control module 3No.Circuit34Body control module 235Body control module 136–37Steering wheel control LED38–39Logistic/DC transformer40Power window, driver41Blower42Seat heating, front43Air conditioning module44Heated steering wheel45–Vehicle tools
Tools
Vehicles without spare
The vehicle tools are in the
compartment under the floor cover in
the load compartment.