Acceleration Slip Regulation
Caution!
If the BAS malfunctions, the brake
system functions in the usual manner,
but without BAS.
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.
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.
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.
With the acceleration slip regulation
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.
Notes:
Driving the vehicle with varied size
tires will cause the wheels to rotate at
different speeds, therefore the
The indicator lamp for the ASR is
combined with that of the BAS.
acceleration slip regulation may
With the key in steering lock position
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.
activate (yellow ASR warning lamp in
instrument cluster comes on). For this
reason, all wheels, including the spare
wheel, must have the same tire size.
As traction on the road surface
increases, thus allowing acceleration
without slip, the allowable engine
torque also increases again and the
brake is no longer applied to drive
wheels.
When testing the parking brake on a
brake test dynamometer, the engine
must be shut off. Otherwise, the
acceleration slip regulation will
immediately be engaged and will apply
the rear wheel brakes.
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.
Important!
If the ASR warning lamp flashes, adapt
your speed and driving to the prevailing
road conditions.
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.
97
| Categories | Mercedes-Benz Manuals, Mercedes-Benz S-Class Manuals |
|---|---|
| Document Type | Free Auto PDF Vehicle Owner's Manual Download |
| Tags | Mercedes-Benz S320, Mercedes-Benz S420, Mercedes-Benz S500, Mercedes-Benz W140 |
| Model Year | 1998 |
| Download File |
|
| Document File Type | |
| Publisher | bayhas.com |
| Wikipedia's Page | Mercedes-Benz S-Class |
| Copyright | Attribution Non-commercial |
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