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

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

526 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

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to prevent shock or short-circuits.

Symptoms

•No movement of windshield wipers when activated
•Wipers stuck in a specific position
•Intermittent operation or failure to operate on certain settings
•Warning message on the display indicating wiper system failure
•No sound from the wiper motor when activated

Diagnostic Steps

1
Inspect the wiper switch for functionality by checking if it responds to different settings.
2
Use a multimeter to test for voltage at the wiper motor connector while the wipers are activated.
3
Scan the vehicle using an OBD-II scanner for any error codes related to the windshield wiper system.
4
Examine the wiper motor for any signs of damage or corrosion.
5
Check the fuse related to the windshield wiper system to ensure it is not blown.

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

•OBD-II scanner
•Multimeter
•Socket set

Parts Required

•Wiper motor (if replacement is needed)
•Fuses (if blown)

Related Faults

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Diagnostic Steps

1
Inspect the wiper switch for functionality by checking if it responds to different settings.
2
Use a multimeter to test for voltage at the wiper motor connector while the wipers are activated.
3
Scan the vehicle using an OBD-II scanner for any error codes related to the windshield wiper system.
4
Examine the wiper motor for any signs of damage or corrosion.
5
Check the fuse related to the windshield wiper system to ensure it is not blown.

Solution

1. Preparation

Tools Required: OBD-II scanner, multimeter, socket set, replacement fuses (if needed).
Disconnect the vehicle's 12V battery to ensure safety while working on electrical components.

2. Inspect and Test Components

Wiper Switch:
- Remove the steering column cover using a socket set.
- Disconnect the wiper switch connector and use a multimeter to check continuity when the switch is activated.
Wiper Motor:
- Locate the wiper motor beneath the windshield cowl.
- Unplug the motor connector and test for voltage while activating the wipers.
- If voltage is present but the motor does not operate, it may need replacement.

3. Replace Wiper Motor (if necessary)

Remove the wiper arms by loosening the nuts at the base (use a socket set).
Remove the cowl cover by unscrewing any screws and unclipping it.
Unscrew the wiper motor from its mounting bracket.
Install the new wiper motor by reversing the removal steps and securing it firmly.
Reattach the wiper arms and cowl cover, ensuring all clips and screws are properly secured.

4. Check and Replace Fuses (if necessary)

Locate the fuse box and identify the fuse for the windshield wiper system.
Remove the fuse and inspect it; replace it if blown with a fuse of the same amperage.

5. Reconnect Battery and Test

Reconnect the vehicle's 12V battery.
Activate the wipers to ensure they function correctly across all settings.