how to fix the rear windshield wiper not working on Tesla Model 3 Original (2017-2023)?

Tesla Model 3 Highland (2024-present)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

518 words

Problem Statement

Learn how to diagnose and fix the rear windshield wiper not working on Tesla Model 3 (2017-2023). Step-by-step guide with tools and parts needed.

Affected Component

Electrical

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the negative battery terminal before working on electrical systems.

Symptoms

•Rear windshield wiper does not operate when activated
•No sound or movement from the wiper motor
•Wiper fluid does not spray onto the rear windshield
•Check for any associated warning lights on the dashboard
•Previous intermittent operation before complete failure

Diagnostic Steps

1
Inspect the rear wiper blade for physical damage or obstructions.
2
Check the rear wiper fuse in the fuse box for continuity.
3
Use an OBD-II scanner to check for error codes related to wiper systems.
4
Test the rear wiper switch for proper function using a multimeter.
5
Verify the power supply to the rear wiper motor by checking voltage at the motor connector.

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
•OBD-II scanner
•Flathead screwdriver
•Torx screwdriver

Parts Required

•Replacement rear wiper motor (if faulty)
•Replacement fuse (if required)

Related Faults

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Diagnostic Steps

1
Inspect the rear wiper blade for physical damage or obstructions.
2
Check the rear wiper fuse in the fuse box for continuity.
3
Use an OBD-II scanner to check for error codes related to wiper systems.
4
Test the rear wiper switch for proper function using a multimeter.
5
Verify the power supply to the rear wiper motor by checking voltage at the motor connector.

Solution

1. Preparation

Gather tools and materials:
- Tools: Socket set, multimeter, OBD-II scanner, flathead screwdriver, Torx screwdriver.
- Parts: Replacement wiper motor (if faulty), replacement fuse (if blown).
Ensure the vehicle is parked safely with the ignition off.

2. Inspect and Replace the Fuse

Locate the fuse box, typically located under the dashboard or in the trunk.
Remove the cover and locate the rear wiper fuse.
Use a fuse puller or flathead screwdriver to extract the fuse.
Inspect the fuse for continuity; replace it if it's blown (use the same amperage rating).

3. Test and Replace the Rear Wiper Motor

If the fuse is functional, disconnect the negative battery terminal to ensure safety.
Access the rear wiper motor by removing any necessary interior trim or covers in the hatch area.
Disconnect the electrical connector from the rear wiper motor.
Use a multimeter to check for power at the motor connector when the wiper switch is activated. If no power is present, further diagnose the wiring or switch.
If power is present, remove the motor by unscrewing the mounting bolts and disconnecting the wiper arm.
Install the new rear wiper motor by reversing the removal steps, ensuring all connections are secure.

4. Reassemble and Test

Reinstall any trim or covers that were removed.
Reconnect the negative battery terminal.
Test the rear wiper function by activating it from the control stalk.