WARNING
■
A lack of fuel can cause irregular engine running or cause the engine to
shut down. This would lead the OFF ROAD mode to lose its effectiveness -
risk of accident!
■
The increased safety offered by the OFF ROAD mode must not tempt you
to take greater risks than otherwise - risk of an accident!
■
Adjust the speed and driving style to the current visibility, weather, road
and traffic conditions.
CAUTION
■
The OFF ROAD mode is not designed for the use on common roads.
■
All four wheels must be fitted with the same tyres approved by the manufac-
turer to ensure theOFF ROAD mode operates correctly.
Operation
Fig. 129
OFF ROAD button
Read and observe and on page 141 first.
We recommend that you activate the OFF ROAD mode for every trip on non-
paved roads.
Activating
›
Press the symbol button
» Fig. 129.
The symbol in the button comes on.
Deactivate
›
Press the symbol key
» Fig. 129 or turn the ignition off.
The symbol in the button is no longer illuminated.
So that an engagement of the OFF ROAD mode can take place, the following
conditions must be met.
The OFF ROAD mode is enabled.
The vehicle is moving at a speed of less than 30 km/h.
The warning light
illuminates in the instrument cluster.
The following functions are integrated in the OFF ROAD mode.
›
Downhill Drive Support » page 141.
›
TCS OFF ROAD » page 142.
›
EDL OFF ROAD » page 142.
›
ABS OFF ROAD » page 142.
›
Start-Off Assistant » page 142.
Note
If the engine stalls while driving and is started again within 30 seconds, then
OFF ROAD mode will be automatically activated.
Hill Descent Assistant
Read and observe and on page 141 first.
The hill descent assistant (hereinafter referred to as assistant), with its auto-
matic braking action on all wheels, ensures a constant speed on a steep slope
when driving forwards and reversing.
The assistant is automatically engaged under the following conditions.
The vehicle engine is running and is in either the 1st, 2nd, 3rd gear, reverse
gear or no gear is engaged and the selector lever is in position R, N, D, S or
Tiptronic.
The downhill gradient is at least 10 % (when driving over sleepers, the lim-
it can briefly drop to 8 %).
Neither the accelerator nor the brake pedal is operated.
During an intervention of the Assistants, the warning light
flashes in the in-
strument cluster.
The assistant holds the vehicle speed at which the vehicle was travelling when
it entered the slope.
By pressing the accelerator or brake pedal, the speed can be increased or re-
duced. This is true even if the shift lever is in the neutral position and the se-
lector lever in the N position. The engagement of the assistant is resumed af-
ter the pedal is released.
141
Assist systems