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Driver assistance systems
Electronic differential lock (XDS)*
When taking a curve, the driveshaft differen-
tial mec
hanism allows the outer wheel to turn
at a higher speed than the inner wheel. In
this way, the wheel that is turning faster (out-
er wheel) receives less drive torque than the
inner wheel. This may mean that in certain
situations the torque delivered to the inner
wheel is too high, causing the wheels to
spin. On the other hand, the outer wheel is
receiving a lower drive torque than it could
transmit. This causes an overall loss of lateral
grip on the front axle, resulting in understeer
or “lengthening” of the trajectory.
The XDS system can detect and correct this
effect via the sensors and signals of the ESC.
Via the ESC, the XDS will brake the inside
wheel and counter the excess driving torque
of that wheel. This means that the driver's
desired trajectory is much more precise.
The XDS system works in combination with
the ESC and is always active, even when ASR
traction control is disconnected or the ESC is
in Sport mode.
Brake servo
The brake servo increases the pressure you
ap
p
ly
to the brake pedal. It works only when
the engine is running.
If the brake servo is not functioning, e.g. due
to a malfunction, or if the vehicle is being
towed, you will have to press the brake pedal
considerably harder to make up for the lack
of servo assistance.
WARNING
The braking distance can also be affected by
extern
al factors.
●
Never let the vehicle coast with the engine
switched off. Failure to follow this instruction
could result in an accident. The braking dis-
tance is increased considerably when the
brake servo is not active.
●
If the brake servo is not working, for exam-
ple when the vehicle is being towed, you will
have to press the brake pedal considerably
harder than normal.
Start-Stop System*
D
e
s
cription and operation
The Start-Stop function stops the engine
when the
v
ehic
le is stopped and starts it au-
tomatically when required.
Vehicles with a manual gearbox
–
When the vehicle is stopped, put it into
neutral and release the clutch pedal. The
engine will switch off. The warning lamp
will appear on the instrument panel dis-
play.
–
When the clutch pedal is pressed the en-
gine will start up again. The warning lamp
will switch off.
Vehicles with an automatic gearbox
–
Use the foot brake to bring the vehicle to a
stop and keep the brake pedal pressed
down with your foot. The engine will switch
off. The warning lamp will appear in the
display.
–
When you take your foot off the brake pedal
the engine will start up again. The warning
lamp will switch off.
Start-Stop function conditions
●
The driver seat belt must be buckled.
●
The bonnet must be closed.
●
The engine must be at operating tempera-
ture.
●
The steering wheel must be straight.
●
The vehicle must be on flat ground.
●
The vehicle must not be in reverse.
●
A trailer must not be connected.
●
The temperature of the interior must be
within the comfort limits (
A/C
button should
be sel
ect
ed).
●
The w
indscreen de-mist function must be
off.
»
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Technical dataAdviceOperationEmergenciesSafety
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