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Gearbox: System fault! You can
continue driving in D until switch-
ing off the engine
●
Park the vehicle in a safe place. Seek special-
ist assistance.
Gearbox: too hot. Adapt your
driving accordingly
●
Continue driving at moderate speeds. When
the warning lamp switches off, you can con-
tinue driving in a normal manner.
Gearbox: press the brake and
engage a gear again
●
If the warning was caused by the temperature
of the gearbox, this driver message will be dis-
played when the gearbox has cooled again.
Back-up programme
If all the gear positions are shown over a light
background on the instrument cluster, there is
a system fault and the automatic gearbox will
operate with the backup programme. It is still
possible to drive the vehicle, however, at low
speeds and within a selected range of gears.
Driving in reverse gear may not be possible.
Parking lock manual release mechanism
If, in the event of a power failure (e.g. the
12-volt vehicle battery is drained), the vehicle
must be towed and the parking lock can be re-
leased manually. In this case, you should seek
professional assistance.
Steering
Driving
Driving on slopes
downhill assistant
Downhill speed control is activated when the
gear lever is in the D/S position and the brake
is applied. An appropriate lower gear is en-
gaged.
The assistant attempts to maintain the speed
at which the vehicle was travelling when the
brake was applied, within logical limits. It may
be necessary to correct the speed by pressing
the brake.
The assistant can only change down as far as
3rd gear. It is possible that on very steep slopes
you may have to switch to tiptronic mode and
thus manually change down to 2nd or 1st gear
to take advantage of engine braking and take
the load off the brake system.
Downhill speed control is deactivated as soon
as the road levels out again or you press the
accelerator pedal.
On vehicles with a cruise control system
›››
page 178, downhill speed control is activa-
ted when you set a cruising speed.
WARNING
The downhill speed control cannot defy the
laws of physics. Therefore, speed cannot be
maintained constant in all situations. Always
be prepared to use the brakes!
Steering
Information relating to different
vehicle processes.
To make the vehicle more difficult to steal, al-
ways lock the steering before leaving the it.
Steering
On vehicles with electromechanical steering,
the power steering automatically adjusts ac-
cording to the driving speed, the steering
wheel torque and the orientation of the
wheels. The power steering only works when
the engine is running.
If the power steering does not work properly or
does not work at all, you will have to use much
more strength than usual to turn the steering
wheel.
Progressive steering
Depending on the vehicle's features, it may or
may not incorporate a progressive steering sys-
tem.
In city traffic you do not need to turn so much
on parking, manoeuvring or in very tight turns.
On roads or motorway, progressive steering
transmits, for example, in bends, a sportier,
more direct and noticeably more dynamic driv-
ing sensation.
165
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