Instruments and warning/indicator lamps 19
Controls Safety Driving tips General maintenance Self-help Technical data
sideways. Drive carefully to the nearest qualified workshop and
have the fault rectified.
Anti-lock brake system (ABS)
The warning lamp monitors the ABS and the electronic
differential lock (EDL).
The warning lamp lights up for a few seconds when the ignition
is switched on and while the engine is being started. The lamp goes
out again once the system has run through an automatic test
sequence.
There is a fault in the ABS if:
• the warning lamp does not light up when the ignition is
switched on,
• the warning lamp does not go out again after a few seconds,
• the warning lamp lights up when the vehicle is moving.
The vehicle can still be braked in the normal way (except that the
ABS control function is out of action). Please take the vehicle to a
qualified workshop as soon as possible. For further information on
the ABS ⇒ page 132.
If a fault occurs in the ABS, the ESP warning lamp will also light up.
Fault in the main brake system
If the ABS warning lamp lights up together with the brake
warning lamp ⇒ page 35, this indicates a fault in the ABS func-
tion, and possibly a malfunction in the main brake system as well
⇒ .
If there is a malfunction in the brake system the symbol will light
up in the instrument cluster. Please refer to ⇒ page 18.
Fault on the electronic differential lock (EDL)
The EDL works in conjunction with the ABS. If a malfunction should
occur in the EDL, this is indicated by the ABS warning lamp .
Please take the vehicle to a qualified workshop as soon as possible.
For further information on the EDL ⇒ page 132.
WARNING
• If the brake warning lamp lights up together with the ABS
warning lamp , the brake fluid level in the reservoir is too low
and this may cause an accident. Stop the vehicle and do not drive
on. You should obtain professional assistance.
• If the brake fluid level is OK, the fault in the brake system may
have been caused by a failure of the ABS control function. As a
result the rear wheels can lock relatively easily when braking. This
could cause the tail of the vehicle to skid sideways. Drive carefully
to the nearest qualified workshop and have the fault rectified.
WARNING (continued)
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