134Driving and operatingDrive systems
All-wheel drive All-wheel drive is an active-on-
demand system that engages
automatically, with no action required
by the driver. Depending on the
driving environment, the vehicle
switches between two-wheel drive and four-wheel drive, to give the
vehicle more traction and stability
when necessary.
If the front wheels begin to slip, the
rear wheels will automatically begin to drive the vehicle as required. More
torque is transferred to the wheels
that have the most traction, so the
vehicle has optimum grip at all times. There may be a slight engagement
noise during hard use.
As well as enabling the vehicle to be
driven off-road, this system also
enables the vehicle to be driven on
normal roads without incurring
excessive tyre and drivetrain wear or
causing poor control.Ensure tyres (including the spare) are
inflated to the correct pressure
3 207 and are suitable for the
prevailing road conditions. For
optimum system performance, the
vehicle's tyres should not have
varying degrees of wear.
If control indicator B flashes in the
instrument cluster during driving, All- wheel drive is temporarily disabled. If B flashes continuously, there is a fault
in the system; seek the assistance of
a workshop.
All-wheel drive control indicator B
3 86.
On-road driving The increased traction of All-wheel
drive vehicles offers greater driving
control in adverse road conditions,
particularly heavy snow and ice.
However, All-wheel drive vehicles are
not "skid-proof" and do not decrease
stopping distances.
All-wheel drive vehicles have a higher
centre of gravity than conventional
vehicles. Always approach curves at
an appropriate driving speed. Do notattempt to go as fast through turns as
you might in a conventional vehicle.
Strong crosswinds can affect the normal steering of the vehicle. Drive
slower under strong crosswind
conditions.
Off-road driving ■ Avoid protruding objects (such as rocks or tree stumps) that maydamage the underbody and tyres of
your vehicle.
■ Test the brakes after operating in mud, to clear excess mud from the
braking surfaces.
■ Grip the steering wheel when travelling over rough terrain.
Terrain conditions can cause rapid
and unexpected movement in the
steering.
The ground clearance, ramp angle,
angle of approach and departure and wading depth need to be considered,
especially in hilly conditions and
when wading, to prevent the vehicle
becoming stuck and possibly
damaged.
Vehicle dimensions 3 204.
176Vehicle care
V=up to 240 km/hW=up to 270 km/h
Tyre pressureCheck the pressure of cold tyres at
least every 14 days and before any
long journey. Do not forget the spare
wheel. This also applies to vehicles
with tyre pressure monitoring system.
Use the valve cap key to make
unscrewing the valve caps easier.
The valve cap key is located on the
inside of the tank flap.
Tyre pressure 3 207.
The tyre pressure data refers to cold
tyres. It applies to summer and winter tyres.
Always inflate the spare tyre to the
pressure specified for full load.
The ECO tyre pressure serves to
achieve the smallest amount of fuel
consumption possible.
Incorrect tyre pressures will impair
safety, vehicle handling, comfort and
fuel economy and will increase tyre
wear.
The tyre pressure tables show all
possible tyre combinations 3 207.
For the tyres approved for your
vehicle, refer to the EEC Certificate of
Conformity provided with your vehicle or other national registration
documents.
The driver is responsible for correct
adjustment of tyre pressure.9 Warning
If the pressure is too low, this can
result in considerable tyre warm-
up and internal damage, leading to tread separation and even to tyre
blow-out at high speeds.
If the tyre pressure shall be reduced
or increased on a vehicle with tyre
pressure monitoring system, switch
off ignition.
Tyre pressure monitoring
system The tyre pressure monitoring system
checks the pressure of all four wheels
once per 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. If
wheels without sensors are mounted,
the tyre pressure monitoring system
is not operational. Retrofitting of
sensors is possible.
Note
In countries where the tyre pressure monitoring system is legally
required, the use of wheels without
pressure sensors will invalidate the
vehicle type approval.
