74
Safety
Driving safety systems
2
If the road surface is not capable of pro-
viding sufficient traction, bearing in
mind the tires, load and gradient, it is
not be possible to pull away smoothly
even with ASR.
Vehicles without steering wheel but-
tons:
There is a malfunction if the
k indi-
cator lamp is permanently lit while the
engine is running (
page 73).
If ASR malfunctions, engine power out-
put may be reduced.
Activating/deactivating ASR
ASR is automatically activated as soon
as the engine is switched on.
It may be best to deactivate ASR in the
following situations:
if snow chains are being used
in deep snow
on sand or gravel
If you deactivate ASR:
the engine’s torque is then no longer
limited and the drive wheels could
spin; the spinning wheels produce a
cutting effect for better traction
traction control still intervenes by
braking if one drive wheel reaches its
grip limit, for example if the surface
under one side of the vehicle is slip-
pery. The wheel is then braked to in-
crease traction in this situation.
ESP
®
still intervenes to stabilize the
vehicle
nf_BA.book Page 74 Friday, January 25, 2008 3:53 PM
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