Wiper Motor Blocking Protection The wiper park signal is also used by the BCU for blocking protection of the front wiper motor. This feature protects the motor in the event of the wiper operation being obstructed. If the BCU does not receive the wiper park signal fora period of 16 seconds, when the wiper motor is active, the BCU removes the power supply to the motor. The motor is disabled fora period of 3 minutes or until the ignition is switched off and on again. Even after the 3 minute period has elapsed, the BCU will not automatically switch the motor onto prevent the risk of injury. The wiper switch must be moved off and then onto reactivate the wiper motor. The blocking protection is active in all wiper switch positions and can only be reset by turning the ignition off. Rear Wipers The rear wiper has the following functionality: l Intermittent operation l Adjustable intermittent wipe period l Continuous reverse wipe function. Wiper Operation The rear wiper is operated by the wiper column control switch. Pushing the switch forward to the first latching position switches on the rear wiper. Moving the switch forward again to the non-latching position operates the rear wash/wipe function. When the rear wiper is selected on, the wiper is operated in an intermittent mode, performing one complete wipe cycle at regular intervals. When reverse gear is engaged the rear wiper control module receives a reverse signal from the LCM. If the rear wiper is on, the control module operates the rear wiper continuously. The continuous wipe will continue until, reverse gear is disengaged or the rear wiper is switched off. When rear wash/wipe is selected, the control module powers the washer pump for as long as the switch is held. When the switch is released, the control module initiates five complete wipe cycles. The first three wipe cycles are each accompanied by a 0.5 second operation of the rear washer pump. The final two cycles are to clear the tail door window and do not have a washer pump operation. If intermittent remains selected, the rear wiper continues in intermittent mode.