Driving and operating 145ABS starts to regulate brake pressureas soon as a wheel shows a tendencyto lock. The vehicle remainssteerable, even during hard braking.ABS control is made apparentthrough a pulse in the brake pedaland the noise of the regulationprocess.For optimum braking, keep the brakepedal fully depressed throughout thebraking process, despite the fact thatthe pedal is pulsating. Do not reducethe pressure on the pedal.After starting off the system performsa self-test which may be audible.Control indicator u 3 90.Adaptive brake lightDuring full braking, all three brakelights flash for the duration of ABScontrol.Fault9 WarningIf there is a fault in the ABS, thewheels may be liable to lock dueto braking that is heavier thannormal. The advantages of ABSare no longer available. Duringhard braking, the vehicle can nolonger be steered and mayswerve.Have the cause of the fault remediedby a workshop.Parking brakeManual parking brakeAlways apply parking brake firmlywithout operating the release button,and apply as firmly as possible on adownhill or uphill slope.To release the parking brake, pull thelever up slightly, press the releasebutton and fully lower the lever.To reduce the operating forces of theparking brake, depress the foot brakeat the same time.Control indicator R 3 89.
