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

Tesla Model 3 Highland (2024-present)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

500 words

Problem Statement

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

Affected Component

Electrical

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components to avoid shorts or shocks.

Symptoms

•Rear wiper does not activate when switched on
•No noise from the rear wiper motor
•Intermittent wiper function or delay when activated
•Check for any related alerts on the vehicle's display
•Water spray not functioning if equipped with washer fluid

Diagnostic Steps

1
Check the vehicle's touchscreen for any error messages related to wiper systems.
2
Inspect the rear wiper fuse in the fuse box to ensure it is not blown.
3
Use a multimeter to test the rear wiper motor for power when the wiper is activated.
4
Inspect the rear wiper linkage for any signs of disconnection or damage.
5
Check the washer fluid function to determine if it is related to the wiper issue.

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
•Screwdriver set
•Fuse puller or pliers

Parts Required

•Rear wiper motor (if faulty)
•Wiper fuse (if blown)
•Wiper linkage components (if damaged)

Related Faults

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Diagnostic Steps

1
Check the vehicle's touchscreen for any error messages related to wiper systems.
2
Inspect the rear wiper fuse in the fuse box to ensure it is not blown.
3
Use a multimeter to test the rear wiper motor for power when the wiper is activated.
4
Inspect the rear wiper linkage for any signs of disconnection or damage.
5
Check the washer fluid function to determine if it is related to the wiper issue.

Solution

1. Preparation

Gather all necessary tools and parts.
Disconnect the vehicle's 12V battery before beginning any electrical work for safety.

2. Inspect and Replace Fuse

Tools Required: Fuse puller or pliers
Instructions:
1. Locate the fuse box (typically under the dashboard or in the trunk).
2. Identify the rear wiper fuse using the diagram on the fuse box cover.
3. Remove the fuse and inspect for continuity. If blown, replace with a new fuse of the same amperage.

3. Test and Replace Wiper Motor

Tools Required: Socket set, multimeter, wiring harness connector
Instructions:
1. Reconnect the battery and activate the rear wiper while measuring voltage at the motor connector using a multimeter.
2. If there is power but the motor does not operate, disconnect the wiring harness and remove the motor.
3. Install the new wiper motor by reversing the removal steps and ensure it is securely fastened.

4. Inspect and Repair Linkage

Tools Required: Screwdriver set, socket set
Instructions:
1. Remove the rear wiper arm by loosening the retaining nut and pulling it off the shaft.
2. Remove any panel covering the wiper linkage assembly for access.
3. Inspect the linkage for bent or disconnected components, and repair or replace as necessary.