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TCS Off-road page 165,
ABS Off-road page 167.
Switch on Off-road
The Off-road mode is switched on by pressing the button
warning light in the button lights up. The warning light lights up in the instrument
cluster if the system is switched on
Switch off Off-road
The Off-road mode is switched off by repeated pressing of the button. The warning
light in the button goes out. When switching off the ignition, the Off-road mode is also
switched off and can be switched on again, if necessary, after switching on the ignition.
If the engine is switched off by accident and restarted within 30 seconds, the Off-road
mode remains switched on.
All four wheels must be fitted with the same tyres in order to achieve proper operation
of the Off-road mode. Differing rolling circumferences of the tyres can lead to an unde-
sirable reduction in the engine output.
WARNING
Always adjust your speed to suit weather, road and traffic conditions. The
increased safety must not tempt you to take a greater safety risk than otherwise
- risk of accident!
The Off-road equipment can also not overcome the physical limits of your
vehicle.
The effect of the Off-road equipment depends as well on the tyres.
The Off-road equipment is not designed for the use on common roads.
Start-Off Assist*
The Start-Off Assist enhances the driving comfort and can be used when starting off, in
particular on a slope. When the vehicle is stationary, the Start-Off Assist is activated
after switching it on using the button for the Off-road mode
Using the system
Safety
page 170, fig.
page 37.
page 170, fig.
Driving Tips
Operating principle
When depressing the accelerator pedal fully, the engine speed required for the start-
up procedure of the stationary vehicle is restricted. The overspeed trip unit is automat-
ically deactivated after terminating the start-up procedure. As part of the Assist System,
150. The
the accelerator pedal is adapted in its characteristics for an easier start-off on slippery
and loose soil.
Downhill Drive Support*
Operating principle
The Downhill Drive Support maintains a constant speed on a steep downhill section
when driving forwards and backwards by automatically intervening in the brake
system of all wheels. It prevents the wheels locking because the ABS remains active.
The warning light
in the information display of the instrument cluster indicates that
the Downhill Drive Support is available page 37.
The vehicle speed, which is maintained by the Assist System, is selected by the driver
while driving on a downhill section as of the moment the first intervention of the Assist
System is performed or else, while driving on a downhill section, the driver must
control the vehicle speed until the Assist System intervenes for the first time. When the
Assist System actively intervenes, this is indicated by the warning light flashing or by a
pulsating movement of the brake pedal, similar to the intervention of the ABS.
You can increase or reduce the speed, even when no gear is engaged, by operating the
accelerator or brake pedal. Thus the function is always interrupted and is reactivated
afterwards.
The Downhill Drive Support is activated automatically if the following conditions are
met:
the Off-road mode is switched on and the warning light
ment cluster,
the engine of the vehicle is running and either the 1st, 2nd, 3rd gear, the reverse
gear or no gear is engaged,
the engine of the vehicle is running, the selector lever of the automatic gearbox is
150.
in the position R, N, D, S or Tiptronic,
the speed is less than 30 km/h,
General Maintenance
Intelligent Technology
lights up in the instru-
Breakdown assistance
Technical Data
171
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