how to troubleshoot my Tesla Model S Original (2012-2020) windshield wipers not working?

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

525 words

Problem Statement

Learn how to troubleshoot and fix windshield wipers not working on Tesla Model S (2012-2020). Step-by-step guide with diagnostic and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the vehicle from charging before working on electrical components

Symptoms

•Windshield wipers fail to activate when switched on
•Wiper blades remain stationary while washer fluid is sprayed
•Intermittent wiper settings do not function
•Warning message displayed on the dashboard (if applicable)
•No noise or movement from the wiper motor

Diagnostic Steps

1
Check the wiper switch functionality by testing different settings (low, high, intermittent)
2
Inspect the windshield wiper fuse using the owner's manual for location and specifications
3
Scan for error codes using a Tesla-specific diagnostic tool to check for any related faults
4
Verify the wiper motor's electrical connections for corrosion or loose wires
5
Measure the voltage at the wiper motor connector to ensure proper power supply
6
Inspect the wiper relay (if applicable) for 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

•Multimeter
•Socket set
•Screwdriver
•Fuse puller tool

Parts Required

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

Related Faults

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Diagnostic Steps

1
Check the wiper switch functionality by testing different settings (low, high, intermittent)
2
Inspect the windshield wiper fuse using the owner's manual for location and specifications
3
Scan for error codes using a Tesla-specific diagnostic tool to check for any related faults
4
Verify the wiper motor's electrical connections for corrosion or loose wires
5
Measure the voltage at the wiper motor connector to ensure proper power supply
6
Inspect the wiper relay (if applicable) for proper operation

Solution

1. Preparation

Gather tools: multimeter, socket set, screwdriver, and possibly a replacement fuse or wiper motor.
Disconnect the vehicle from charging and ensure it is in park mode.

2. Replace the Wiper Fuse

Locate the fuse box: Refer to the owner's manual for the exact location of the fuse box.
Remove the fuse: Use the fuse puller tool to remove the wiper fuse.
Inspect the fuse: Check if the fuse is blown (the wire inside should be intact).
Install a new fuse: Replace with a fuse of the same amperage rating.

3. Test and Replace Wiper Motor (if necessary)

Remove wiper arms: Use a socket set to remove the nuts securing the wiper arms. Gently lift them off.
Access the wiper motor: Remove any panels or covers obstructing access to the wiper motor.
Disconnect the motor: Unplug the electrical connector from the wiper motor.
Test the motor: Use a multimeter to measure voltage at the connector while activating the wipers. If no voltage is detected, further electrical diagnosis is needed. If voltage is present but the motor does not operate, proceed to replace the motor.
Install the new motor: Connect the new wiper motor and secure it in place. Reattach any panels or covers removed earlier.

4. Reassemble Wipers

Reinstall wiper arms: Secure them back onto the motor shaft.
Adjust wiper positions: Ensure the wipers are in the correct resting position before tightening the nuts.