Intelligent technology 223
Controls Safety Driving tips General maintenance Self-help Technical data
Note
• To ensure that the ASR works properly, all four wheels must be
fitted with identical tyres. Any differences in the rolling radius of the
tyres can cause the system to reduce engine power when this is not
desired.
• Should a malfunction occur in the ABS or EDL, both the ABS
warning lamp and the ESP warning lamp ⇒ page 19 will light
up.
• In the event of a malfunction in the ESP system, the warning
lamp ⇒ page 17 will light up.
• If a malfunction should occur in the ABS, the ESP, EDL and ASR
will also be out of action.
• The systems can make noises when they intervene.
Switching on and off
The ESP is switched on automatically when the engine is
started.
Switching off the traction control system (ASR)
In particular circumstances, it may be advisable to switch off the
traction control system (ASR) to allow a certain amount of wheel
slip. For example:
• Rocking the car backwards and forwards to free it
• Driving in deep snow or on loose surfaces
• Driving with snow chains
Press the button briefly ⇒ fig. 232 or ⇒ fig. 233. The
warning lamp will light up and the message ASR off will appear
in the driver information system display.
The traction control system (ASR) can only be switched off at speeds
below 50 km/h on vehicles with front-wheel drive. At 70 km/h it will
switch on again automatically. The ASR can be deactivated at any
speed on vehicles with four-wheel drive.
Switching off the ESP
Press the button for longer than 3 seconds. The ESP
warning lamp will light up and the message ESP switched off will
appear in the display. The ASR is also deactivated when the ESP is
switched off.
Switching on
Press the button again. The message ESP/ASR on will
appear briefly on the display.
Fig. 232 Version A:
Centre console
(bottom), ESP OFF
button
Fig. 233 Version B:
Centre console (top),
ESP OFF button
ESP OFF
ESP OFF
ESP OFF
document_0900452a81b1b9de.book Seite 223 Donnerstag, 26. Juli 2007 9:16 09
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