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

Volkswagen Tiguan Second Generation (2018-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

591 words

Problem Statement

Learn how to diagnose and fix the rear window wiper not working on your Volkswagen Tiguan. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to prevent shorts.
•Allow the vehicle to cool down before inspecting components near the engine.

Symptoms

•Rear wiper does not operate when activated
•No noise or movement when rear wiper switch is engaged
•Front wipers may still function normally
•Possible intermittent operation before complete failure
•Wiper fluid not spraying on the rear window

Diagnostic Steps

1
Check the rear wiper fuse for continuity using a multimeter.
2
Inspect the rear wiper motor for any signs of damage or corrosion.
3
Test the rear wiper switch for proper operation using a multimeter.
4
Examine the wiring harness leading to the rear wiper motor for any signs of wear or disconnection.
5
Verify the rear wiper linkage for any obstructions or mechanical binding.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•Socket set
•Multimeter
•Screwdrivers
•Trim removal tool

Parts Required

•Rear wiper motor (if faulty)
•Rear wiper arm (if damaged)
•Rear wiper switch (if defective)
•Rear wiper fuse (if blown)

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Diagnostic Steps

1
Check the rear wiper fuse for continuity using a multimeter.
2
Inspect the rear wiper motor for any signs of damage or corrosion.
3
Test the rear wiper switch for proper operation using a multimeter.
4
Examine the wiring harness leading to the rear wiper motor for any signs of wear or disconnection.
5
Verify the rear wiper linkage for any obstructions or mechanical binding.

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.