Wiper Arm: Service and Repair

Wiper arms, removing and installing


Some early models are equipped with a driver's side wiper pressure control system (called ADV). This system electronically regulates the wiper contact force on the windshield. Wiper arm removal varies slightly on cars with ADV.






Schematic of wiper arm on cars with ADV. After installing arm, tighten clamping screw (A), then tighten adjusting screw (C) until screw contacts ADV pin (B).


1. Swing hinged plastic cover upwards from base of wiper arm.






2. On cars without ADV, remove wiper arm retaining nut and remove the wiper arm.

NOTE: Marking the position of the wiper arm on the shaft will aid installation

3. On cars with ADV wiper arm, remove the wiper arm clamping screw and remove the wiper arm.

NOTE: If necessary use a screwdriver to spread clamping gap in wiper arm.

4. Installation is the reverse of removal. On cars with ADV press wiper arm on fully, then thread the adjusting screw down just until it contacts the ADV pin.
For torque specifications, refer to Specifications, Specifications

NOTE: Recheck wiper arm tightening torque atter waiting 15 minutes.