Acceleration Slip Control (ASR)
Caution!
Driving the vehicle with varied size
tires will cause the wheels to rotate at
different speeds, therefore the
acceleration slip control will activate
(yellow ASR function indicator lamp in
instrument cluster comes on). For this
reason, all wheels, including the spare
wheel, must have the same tire size.
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.
If the vehicle is towed with the front
axle raised (see Towing the vehicle in
Index), the key must not be in steering
lock position 2. Otherwise, the
acceleration slip control will
immediately be engaged will apply the
rear wheel brakes.
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.
When testing the parking brake on a
brake test dynamometer, the key must
not be in steering lock position 2.
Otherwise, the acceleration slip control
will immediately be engaged and will
apply the rear wheel brakes.
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 with the engine running.
In winter operation, the maximum
effectiveness of the acceleration slip
control can only be achieved with M +
S radial-ply tires recommended by
Mercedes-Benz.
As traction on the road surface
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 partial engine output is
available.
increases, the allowable engine torque
also increases again and the brake is no
longer applied to drive wheels.
On vehicles equipped with acceleration
slip control, the brake pad wear
warning lamp indicates brake pad wear
for the front as well as the rear brakes.
Have the acceleration slip control
checked at your authorized Mercedes-
Benz dealer as soon as possible.
85
| Categories | Mercedes-Benz Manuals, Mercedes-Benz S-Class Manuals |
|---|---|
| Document Type | Free PDF Auto Owner's Manual Download. |
| Tags | Mercedes-Benz 600SEL, Mercedes-Benz W140 |
| Model Year | 1993 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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