how to fix the Tesla Model S Original (2012-2020) windshield wipers not working

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-3 hours

Time

medium

Difficulty

high

Severity

3 min read

543 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix windshield wipers not working on Tesla Model S (2012-2020). 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 battery before working on electrical systems.
•Allow the vehicle to cool before working on any components.

Symptoms

•Windshield wipers do not activate when the switch is engaged
•Wiper fluid does not spray when the washer button is pressed
•No noise or movement from the wiper motors
•Dashboard warning lights may illuminate
•Previous wiper performance was intermittent or slow

Diagnostic Steps

1
Check the windshield wiper fuse for continuity using a multimeter.
2
Scan the vehicle’s onboard computer for error codes related to the wiper system.
3
Inspect the wiper relay operation by swapping it with a similar relay from another circuit.
4
Verify the wiper switch function by testing for power and ground at the switch connector.
5
Inspect the wiring harness for any visible damage or corrosion.
6
Test wiper motors directly for function by applying power directly to the motor connectors.

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
•Fuse puller
•Socket set
•Screwdriver set
•OBD-II scanner

Parts Required

•Wiper fuse (if blown)
•Wiper relay (if faulty)
•Wiper motor (if defective)

Related Faults

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Diagnostic Steps

1
Check the windshield wiper fuse for continuity using a multimeter.
2
Scan the vehicle’s onboard computer for error codes related to the wiper system.
3
Inspect the wiper relay operation by swapping it with a similar relay from another circuit.
4
Verify the wiper switch function by testing for power and ground at the switch connector.
5
Inspect the wiring harness for any visible damage or corrosion.
6
Test wiper motors directly for function by applying power directly to the motor connectors.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the vehicle battery to avoid electrical shock.
Ensure the vehicle is on a flat surface and the wipers are in the parked position.

2. Check and Replace the Fuse

Locate the fuse box (usually found under the dashboard or in the frunk).
Identify the windshield wiper fuse using the fuse diagram.
Remove the fuse using a fuse puller and check for continuity; replace if blown.
Reinstall the fuse and reconnect the battery.

3. Inspect and Replace the Wiper Relay

Remove the cover of the fuse box to access the relay.
Locate the windshield wiper relay; consult the owner's manual for exact location.
Swap it with a similar relay from a non-critical function to test operation.
If wipers work, replace the faulty relay with a new one.

4. Test and Replace the Wiper Motor

If the wiper motor did not respond during testing, access the motor by removing the wiper arms and the motor cover.
Disconnect the motor connector and apply power directly to the motor terminals.
If the motor does not run, replace it with a new motor.
Reassemble all components carefully.

5. Reassemble and Test

Reattach any panels or covers that were removed.
Reconnect the battery.
Test the wipers in all settings to ensure full functionality.