167
Driving
Driving SteeringIntroduction The power steering is not hydraulic but electromechanical. The advantage
of thi
s
steering system is that it disposes of hydraulic tubes, hydraulic oil,
the pump, filter and other components. The electromechanical system
saves fuel. While a hydraulic system requires oil pressure to be maintained,
electromechanical steering only requires energy when the steering wheel is
turned.
With the power steering system, the assisted steering function automatical-
ly adjusts according to the vehicle speed, the steering torque and the wheel
turning angle. The power steering only works when the engine is running.
Additional information and warnings:
● Start and stop the engine ⇒ page 170
● V
ehicle battery ⇒ page 288
● T
ow-starting and towing away ⇒ page 340WARNING
If the power steering is not working then the steering wheel is much
more diffic u
lt to turn and the vehicle more difficult to control.
● The power steering only works when the engine is running.
● Never allow the vehicle to move when the engine is switched off.
● Never remove the key from the ignition if the vehicle is in motion. The
steerin
g may lock and it will not be possible to turn the steering wheel. Control and warning lamps lights up Possible cause Solution
(red) Power steering faulty. The steering system should be
chec
k
ed by a Technical Service
as soon as possible.
(yel-
lo w) Power steering operation re-
duced. The steering system should be
chec
k
ed by a Technical Service
as soon as possible.
If, after restarting the engine
and driving for a short distance,
the yellow warning light no lon-
ger comes on, it will not be nec-
essary to take the vehicle to a
specialised workshop. The vehicle battery was dis-
connect
ed and h
as been re-
connected. Drive for a short distance at 15 –
20 km/h.
Safety First Operating instructions Practical tips Technical Data
266
Checking and refilling levels WARNING
Driving with insufficient fuel reserve could result in the vehicle breaking
down in tr affic
and a serious accident.
● If the fuel level is too low then the fuel supply to the engine can be-
come irre
gular especially on slopes.
● If the engine “is choked” or stalls due to lack of or irregularity of the
fuel s
upply, the power steering as well as all of the driver assistance sys-
tems including braking assistance will stop working.
● Always refuel when there is only one quarter of the fuel tank left to
avoid runnin
g out of fuel. CAUTION
● Always pay attention to any lit lamps and to the corresponding descrip-
tion s
and instructions to avoid damage to the vehicle.
● Never run the tank completely dry. An irregular fuel supply may lead to
ignition faults
and unburnt fuel could enter the exhaust system. This could
damage the catalytic converter filter or the diesel particulate filter! Note
The arrow next to the fuel pump symbol on the instrument panel ⇒ fig. 162
indic
ates the side of the vehicle on which the tank flap is located. Filling the tank with petrol or diesel Fig. 163 Open tank flap
with t
ank
cap attached to
the holder.
Before refuelling, always turn off the engine, the ignition, mobile tele- phones, aux
iliary heating and keep them off during refuelling.
Unscrewing the tank cap
● The tank flap is at the rear of the vehicle on the right.
● Press the rear of the tank flap to open it.
● Unscrew the tank cap anti-clockwise and insert it in the hole in the tank
flap hing
e ⇒ fig. 163.
Refilling
The correct petrol type for the vehicle is located on a sticker inside the fuel
tank flap ⇒ page 267.
● If the automatic filler nozzle is operated correctly, it will switch itself off
as soon a
s the tank is full ⇒ .
● Do not continue to refuel if it is turned off! Otherwise, this will fill the ex-
pan s
ion chamber and fuel may leak out if the ambient conditions are warm.
