my Tesla Model S Plaid/Refresh (2021-present) wipers won't turn off, how to fix

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

510 words

Problem Statement

Learn how to diagnose and fix wipers that won't turn off in Tesla Model S Plaid. 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 the negative battery terminal before working on electrical components to prevent shorts.

Symptoms

•Wipers continuously running regardless of the switch position
•Wiper control icon on the dashboard may be illuminated
•Possible erratic wiper operation (intermittent or constant)
•Wipers may operate even when the vehicle is off
•Water spray function may not activate

Diagnostic Steps

1
Inspect Wiper Control Settings: Check the wiper control settings on the touchscreen to ensure they are set correctly.
2
Perform Software Check: Verify if the vehicle's software is up-to-date and if there are any known issues reported in the system.
3
Scan for Diagnostic Trouble Codes (DTCs): Use an OBD-II scanner to check for any fault codes related to the wiper system.
4
Inspect Wiper Relay and Fuse: Locate and check the wiper relay and fuse in the vehicle's fuse box for any signs of damage or failure.
5
Check Wiring and Connectors: Visually inspect the wiring and connectors associated with the wiper motor for any signs of corrosion or disconnection.

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
•Basic socket set

Parts Required

•Wiper relay
•Wiper motor (if necessary)

Related Faults

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Diagnostic Steps

1
Inspect Wiper Control Settings: Check the wiper control settings on the touchscreen to ensure they are set correctly.
2
Perform Software Check: Verify if the vehicle's software is up-to-date and if there are any known issues reported in the system.
3
Scan for Diagnostic Trouble Codes (DTCs): Use an OBD-II scanner to check for any fault codes related to the wiper system.
4
Inspect Wiper Relay and Fuse: Locate and check the wiper relay and fuse in the vehicle's fuse box for any signs of damage or failure.
5
Check Wiring and Connectors: Visually inspect the wiring and connectors associated with the wiper motor for any signs of corrosion or disconnection.

Solution

1. Preparation

Tools Required: OBD-II scanner, multimeter, basic socket set
Ensure the vehicle is parked on a level surface and the ignition is turned off.

2. Update Software

Sub-steps:
1. Access the vehicle's main touchscreen.
2. Navigate to "Software" settings.
3. Check for updates and follow prompts to install any available updates.

3. Replace Wiper Relay

Sub-steps:
1. Locate the fuse box (refer to the owner’s manual for exact location).
2. Remove the cover of the fuse box.
3. Locate the wiper relay using the diagram on the cover.
4. Use a socket set to remove the faulty relay and install the new one.

4. Replace Wiper Motor (if necessary)

Sub-steps:
1. Disconnect the negative battery terminal to prevent electrical shorts.
2. Remove the wiper arms by unscrewing the retaining nuts using a socket set.
3. Unscrew and remove the cowling panel to access the wiper motor.
4. Disconnect the electrical connector from the wiper motor.
5. Unscrew the wiper motor from its mounting location and replace it with a new motor.
6. Reconnect the electrical connector and reassemble the cowling and wiper arms.