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

Volkswagen Tiguan Second Generation (2018-present)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

570 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

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to prevent shocks or shorts.
•Ensure the vehicle is in park with the ignition off when working on electrical components.

Symptoms

•Rear window wiper does not move
•Rear wiper motor makes no noise when activated
•Wiper blade does not sweep across the rear window
•Rear wiper does not respond to intermittent or continuous settings
•Washer fluid does not spray from the rear nozzle

Diagnostic Steps

1
Inspect the rear wiper fuse for continuity and replace if blown.
2
Test the rear wiper switch for proper function using a multimeter.
3
Check the wiring and connectors leading to the rear wiper motor for damage or corrosion.
4
Verify the operation of the rear wiper motor by applying direct power to the motor.
5
Inspect the wiper arm for damage or loss of tension that might prevent proper operation.

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

•Screwdriver set
•Multimeter
•Fuse puller or needle-nose pliers
•Jumper wires

Parts Required

•Rear wiper motor (if needed)
•Rear wiper fuse (if blown)
•Rear wiper switch (if faulty)

Related Faults

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Diagnostic Steps

1
Inspect the rear wiper fuse for continuity and replace if blown.
2
Test the rear wiper switch for proper function using a multimeter.
3
Check the wiring and connectors leading to the rear wiper motor for damage or corrosion.
4
Verify the operation of the rear wiper motor by applying direct power to the motor.
5
Inspect the wiper arm for damage or loss of tension that might prevent proper operation.

Solution

1. Preparation

Gather all necessary tools and parts.
Disconnect the battery to prevent any electrical shorts during repair.

2. Replace the Fuse

Locate the fuse box (usually found under the dashboard or in the engine compartment).
Remove the cover and locate the rear wiper fuse (refer to the diagram on the fuse box cover).
Use a fuse puller or needle-nose pliers to remove the fuse.
Inspect the fuse for a break in the filament; replace with a new fuse of the same amperage if necessary.

3. Test and Replace the Rear Wiper Switch (if needed)

Remove the steering column cover using a screwdriver.
Disconnect the switch connector from the rear wiper control.
Use a multimeter to test for continuity when the switch is activated.
If the switch is faulty, replace it with a new one and reconnect the connector.

4. Inspect and Repair Wiring

Visually inspect the wiring harness connected to the rear wiper motor for any signs of wear or damage.
Disconnect the harness and check for corrosion on the terminals; clean if necessary.
Repair or replace damaged wiring as needed.

5. Test the Rear Wiper Motor

Disconnect the motor from the linkage and remove it from the mounting bracket.
Using jumper wires, connect the motor directly to the battery to verify operation.
If the motor does not run, replace it with a new unit.

6. Reassemble and Test

Reattach the rear wiper motor and linkage.
Reconnect the battery.
Test the rear wiper operation to ensure it functions properly.