how to fix the rear window wiper not working on my Volkswagen Tiguan?

Solution

1. Preparation

• Gather necessary tools: socket set, multimeter, screwdrivers, and possibly a trim removal tool.
• Ensure the vehicle is parked on a level surface and the ignition is off.

2. Inspect and Test the Fuse

• Locate the fuse box (usually under the dashboard or in the engine bay).
• Remove the cover and find the fuse for the rear wiper (refer to the owner’s manual for the exact location).
• Use a multimeter to check for continuity. If the fuse is blown, replace it with one of the same amperage.

3. Remove the Rear Wiper Arm

• Use a socket wrench to loosen the nut securing the wiper arm to the motor shaft.
• Carefully pry off the wiper arm from the shaft; it may require a wiper arm puller if stuck.

4. Inspect the Rear Wiper Motor

• Disconnect the wiring harness from the rear wiper motor.
• Remove the motor from its mounting by unscrewing any retaining bolts.
• Test the motor by connecting it directly to a power source (ensure it’s grounded). If it does not operate, replace the motor.

5. Check the Wiring and Switch

• Inspect the wiring harness for any frayed or broken wires.
• If the wiring is intact, use a multimeter to check the rear wiper switch for continuity when activated.
• Replace the switch if it does not operate correctly.

6. Reassemble Components

• Reinstall the rear wiper motor and secure it with bolts.
• Reattach the wiring harness to the motor.
• Place the wiper arm back onto the motor shaft and tighten the securing nut.
• Test the wiper operation before replacing any covers or trim.