Mercedes-Benz S 320 1999, Руководство пользователя

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Acceleration Slip Regulation
(ASR)
The acceleration slip regulation will
engage at all vehicle speeds, if one
or both drive wheels begin to lose
traction and spin in acceleration.
While engaged, the yellow warning
lamp in the speedometer flashes.
With the acceleration slip regula­
tion engaged, the brake is applied
to the spinning drive wheel until
slip is brought under control. If both
drive wheels spin, the brake is
applied to both drive wheels and
simultaneously, engine torque is
limited, to improve the vehicle’s
driving stability.
As traction on the road surface
increases, thus allowing accelera­
tion without slip, the allowable
engine torque also increases again
and the brake is no longer applied
to drive wheels.
Important!
If the ASR warning lamp flashes,
adapt your speed and driving to the
prevailing road conditions.
Caution!
If the vehicle is towed with the front
axle raised (see Towing the vehicle
in Index), the engine must be shut
off (key in steering lock position 0
or 1). Otherwise, the acceleration
slip regulation will immediately be
engaged and will apply the rear
wheel brakes.
Notes:
The indicator lamp for the ASR is
combined with that of the BAS.
With the key in steering lock posi­
tion 2, the yellow malfunction
indicator lamp in the instrument
cluster and the yellow ASR
warning lamp in the speedometer
dial come on. They must go out
when the engine is running.
If the BAS/ASR malfunction
indicator lamp comes on with the
engine running, a malfunction has
been detected in either system.
Pressing the accelerator pedal will
require greater effort. Only partial
engine output will be available.
If the BAS malfunctions, the brake
system functions in the usual
manner, but without BAS.
Have the BAS or ASR checked at
your authorized Mercedes-Benz
dealer as soon as possible.
With the ABS malfunctioning, the
ASR is also switched off.
Driving the vehicle with varied size
tires will cause the wheels to rotate
at different speeds, therefore the
acceleration slip regulation may
activate (yellow ASR warning lamp
in instrument cluster comes on).
For this reason, all wheels, includ­
ing the spare wheel, must have the
same tire size.
When testing the parking brake on
a brake test dynamometer, the en­
gine must be shut off. Otherwise,
the acceleration slip regulation will
immediately be engaged and will
apply the rear wheel brakes.
In winter operation, the maximum
effectiveness of the acceleration
slip regulation is only achieved with
Mercedes-Benz recommended
M+S rated radial-ply tires and/or
snow chains.