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Driving and operating133Ignition switch positions0=Ignition off1=Steering wheel lock released,ignition off2=Ignition on, for diesel engine:
preheating3=StartingStarting the engine
Starting engine with ignition
switch
Operate clutch and brake, automatic
transmission in P or N, do not
accelerate; for diesel engines, turn
the key to position 2 for preheating
until control indicator ! goes out;
turn key briefly to position 3 and
release key when engine is running.
Before restarting or to switch off the
engine, turn key back to position 0.
Starting engine with the
Start/Stop button
The electronic key must be inside the
vehicle. Operate clutch and brake,
automatic transmission in P or N, do
not accelerate, for diesel engines,
press the button briefly to start
preheating, move the steering wheel
slightly to release the steering wheel
lock, wait until control indicator !
goes out and then press button for
1 second and release when the
engine is running.
Page 141 of 245

Driving and operating139
No automatic shifting to a higher geartakes place at a high engine speed.
For reasons of safety, kickdown is
also available in manual mode.
Electronic driving
programmes ■ Following a cold start, the operating
temperature programme increases
engine speed to quickly bring the
catalytic converter to the required
temperature.
■ The automatic neutral shift function
automatically shifts to idling when
the vehicle is stopped with a
forward gear engaged.
■ The adaptive programme tailors gearshifting to the driving
conditions, e.g. greater load or
gradients.
■ When Sport mode is engaged, the vehicle shifts at higher engine
speeds (unless cruise control is
on). Sport mode 3 148.Winter programme T
Activate the Winter programme to
assist starting off on a slippery road surface.
Activation on vehicles without manual
mode
Press the T button with P, R , N , D or
3 engaged. The vehicle starts off in
3rd gear.
Activation on vehicles with manual mode
In automatic mode, press the T
button. Depending on road
conditions, the vehicles starts off in 2nd or 3rd gear.
Deactivation
The Winter programme is switched off by:
■ pressing the T button again
■ manually selecting 2 or 1
■ changing to manual mode
■ turning off the ignition
■ or if the transmission oil temperature is too high
Page 149 of 245

Driving and operating147
Fault9Warning
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 Always apply parking brake firmly
without operating the release button,
and apply as firmly as possible on a
downhill or uphill slope.
To release the parking brake, pull the lever up slightly, press the release
button and fully lower the lever.
To reduce the operating forces of the
parking brake, depress the foot brake
at the same time.
Control indicator R 3 98.
Brake assist
If the brake pedal is depressed quickly and forcefully, maximum
brake force is automatically applied
(full braking).
Maintain steady pressure on the brake pedal for as long as full braking
is required. Maximum brake force is
automatically reduced when the
brake pedal is released.
Hill start assist The system helps prevent unintendedmovement when driving away on
inclines.
When releasing the foot brake after
stopping on an incline, the brakes
remain on for a further two seconds.
The brakes release automatically as
soon as the vehicle begins to
accelerate.Ride control systems
Electronic stability
program
Electronic stability program
(ESP® Plus
) improves driving stability
when necessary, regardless of the
type of road surface or tyre grip. It also prevents the drive wheels from
spinning.
As soon as the vehicle starts to
swerve (understeer/oversteer),
engine output is reduced and the
wheels are braked individually. This
considerably improves the driving
stability of the vehicle on slippery road
surfaces.
ESP® Plus
is operational as soon as
control indicator v extinguishes.
When ESP® Plus
comes into action v
flashes.