|
|
|
166 Driving and operating Brakes The brake system comprises two independent brake circuits. still be braked using the other brake circuit. However, braking effect is achieved only when the brake pedal is depressed firmly. Considerably more force is needed for this. The braking distance is extended. Seek the assistance of a workshop before continuing your journey. support of the brake servo unit disappears once the brake pedal has been depressed once or twice. Braking effect is not reduced, but braking requires significantly greater force. It is especially important to bear this in mind when being towed. Antilock brake system Antilock brake system (ABS) prevents the wheels from locking. ABS starts to regulate brake pressure as soon as a wheel shows a tendency to lock. The vehicle remains steerable, even during hard braking. through a pulse in the brake pedal and the noise of the regulation process. pedal fully depressed throughout the braking process, despite the fact that the pedal is pulsating. Do not reduce the pressure on the pedal. a self-test which may be audible. Control indicator u 3 113. Adaptive brake light During full braking, all three brake lights flash for the duration of ABS control. Fault 9 Warning If there is a fault in the ABS, the wheels may be liable to lock due to braking that is heavier than normal. The advantages of ABS are no longer available. During hard braking, the vehicle can no longer be steered and may swerve. Have the cause of the fault remedied by a workshop. Parking brake 9 Warning Before leaving the vehicle, check parking brake status. Control indicator R (instruction parking brake) or m (electrical parking brake) must illuminate constantly. |