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

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

538 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 wiper issues in Tesla Model S (2012-2020). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

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

Symptoms

•Wipers do not move when activated
•Wiper motor makes a clicking sound but does not operate
•Wipers stuck in a fixed position
•Warning message on the dashboard
•No fluid spray from the washer system

Diagnostic Steps

1
Inspect the windshield wiper switch for functionality by testing it in different positions.
2
Check for blown fuses related to the windshield wiper system in the fuse box.
3
Use an OBD-II scanner to check for any error codes related to the wiper system.
4
Examine the wiper motor and its connections for any visible damage or corrosion.
5
Test the wiper motor by applying direct power to see if it operates outside of the vehicle's control.
6
Inspect the wiring harness for any breaks or shorts that could affect power delivery to the motor.

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
•Safety glasses

Parts Required

•Wiper motor (if defective)
•Wiper blades (if worn)

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Diagnostic Steps

1
Inspect the windshield wiper switch for functionality by testing it in different positions.
2
Check for blown fuses related to the windshield wiper system in the fuse box.
3
Use an OBD-II scanner to check for any error codes related to the wiper system.
4
Examine the wiper motor and its connections for any visible damage or corrosion.
5
Test the wiper motor by applying direct power to see if it operates outside of the vehicle's control.
6
Inspect the wiring harness for any breaks or shorts that could affect power delivery to the motor.

Solution

1. Preparation

Gather tools: socket set, multimeter, OBD-II scanner, and safety glasses.
Disconnect the vehicle's battery to ensure safety while working on the electrical components.

2. Check and Replace Fuses

Locate the fuse box, typically found under the dashboard on the driver's side.
Refer to the owner's manual for the specific fuse related to the windshield wipers.
Remove the fuse and inspect it for continuity using a multimeter.
If the fuse is blown, replace it with a new fuse of the same amperage.

3. Inspect and Test the Wiper Motor

Locate the wiper motor, usually found beneath the cowl or near the windshield.
Disconnect the wiring harness from the motor.
Use a multimeter to test for voltage at the motor connection while activating the wiper switch.
- If voltage is present but the motor does not run, replace the wiper motor.
- If no voltage is present, check wiring and connections back to the switch.

4. Replace Wiper Motor (if necessary)

Remove any covers or trim panels to access the wiper motor.
Disconnect the motor from the wiper linkage.
Unbolt the motor from its mount and remove it.
Install the new wiper motor by reversing the removal steps.
Reattach any trim panels or covers.

5. Reconnect Battery and Test

Reconnect the battery.
Test the wipers by activating them through the switch to ensure proper operation.