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Acceleration Slip Control (ASR)
The acceleration slip control will engage
at all vehicle speeds, if one or both drive
wheels begin to lose traction and spin.
While engaged, the yellow function
indicator in the speedometer lights up.
With the acceleration slip control engaged,
the brake is applied to the spinning drive
wheel until it regains sufficient traction.
If both drive wheels lose traction and spin,
the brake is applied to both drive wheels
and simultaneously, engine torque is
limited.
As traction on the road surface increases,
the allowable engine torque also increases
again and the brake is no longer applied to
drive wheels.
Snow chain switch
Driving with Snow Chains
When driving with snow chains,
press the upper half of the snow chain
switch, located on the instrument
panel (the indicator lamp in the
switch comes on).
This mode is effective at speeds up to
25 mph (40 km/h). It remains stored
in memory up to 37 mph (60 km/h)
and automatically engages again
when the vehicle speed drops below
25 mph (40 km/).
The mode is canceled in memory
above 37 mph (60 km/h) and the
indicator lamp in the switch goes out,
To switch off: press lower half of
switch (the indicator lamp in the switch
goes out).
Notes:
With the key in steering lock position
2, the yellow function indicator lamp
and the yellow ASR warning lamp in
the instrument cluster come on. They
must go out when the engine is
running.
If the ASR warning lamp comes on
with the engine running, a malfunction
has been detected. Pressing the
accelerator pedal will require greater
effort. Only
2
/
3
of engine output is
available.
Have the acceleration slip control
checked at your authorized Mercedes-
Benz dealer as soon as possible.