how to fix the rear wiper not working on my Volkswagen Tiguan Second Generation (2018-present)?

Volkswagen Tiguan 2nd Gen (2018-Present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

526 words

Problem Statement

Learn how to diagnose and fix the rear wiper not working on Volkswagen Tiguan (2018-present). Step-by-step guide with tools and parts needed.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components to avoid short circuits or electrical shock.

Symptoms

•Rear wiper does not activate when the switch is turned on
•No sound or movement from the wiper motor
•Rear wiper fluid does not spray
•Rear wiper arm is loose or has excessive play
•Warning lights on dashboard related to wiper system

Diagnostic Steps

1
Check the rear wiper fuse for continuity using a multimeter.
2
Inspect the rear wiper switch for proper operation by checking for voltage at the switch terminals.
3
Test the rear wiper motor by applying direct battery voltage to see if it operates.
4
Examine the wiring and connectors between the switch, motor, and fuse for damage or corrosion.
5
Inspect the rear wiper arm and linkage for mechanical issues or obstructions.

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

•Multimeter
•Socket set
•Screwdrivers
•Torque wrench

Parts Required

•Rear wiper fuse (if blown)
•Rear wiper motor (if defective)

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Diagnostic Steps

1
Check the rear wiper fuse for continuity using a multimeter.
2
Inspect the rear wiper switch for proper operation by checking for voltage at the switch terminals.
3
Test the rear wiper motor by applying direct battery voltage to see if it operates.
4
Examine the wiring and connectors between the switch, motor, and fuse for damage or corrosion.
5
Inspect the rear wiper arm and linkage for mechanical issues or obstructions.

Solution

1. Preparation

Gather tools: Multimeter, socket set, screwdrivers, and a torque wrench.
Disconnect the vehicle battery to ensure safety while working on the electrical system.

2. Check and Replace the Fuse

Locate the fuse box, typically under the dashboard or in the engine compartment.
Identify the rear wiper fuse (refer to the owner's manual for the exact location).
Remove the fuse using a fuse puller or pliers.
Inspect the fuse for continuity; replace it with a new fuse of the same amperage if blown.

3. Inspect and Test the Rear Wiper Motor

Remove the rear wiper arm by loosening the nut with a socket wrench.
Disconnect the wiring harness from the wiper motor.
Use a multimeter to check for voltage at the motor connector while activating the rear wiper switch.
If there is voltage, apply direct battery voltage to the motor to check if it operates. If it does not work, replace the motor.

4. Check and Repair Wiring

Inspect the wiring harness for frayed or damaged wires, particularly around the hinge area of the rear hatch.
Repair any damaged wiring using electrical tape or connectors, ensuring a solid connection.

5. Reassemble and Test

Reconnect the rear wiper motor and reattach the wiper arm, securing it with the nut.
Reconnect the vehicle battery.
Test the rear wiper operation to ensure it functions correctly.