my Tesla Model 3's windshield wipers won't turn off, what could be wrong?

Tesla Model 3 Highland (2024-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

453 words

Problem Statement

Learn how to diagnose and fix windshield wipers that won't turn off on your Tesla Model 3. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

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

Symptoms

•Windshield wipers continuously running
•Wiper control stalk unresponsive
•Intermittent wiper function not activating
•Wiper Service Required message displayed on the dashboard
•Battery drain due to wiper operation

Diagnostic Steps

1
Check the wiper control settings in the vehicle’s touchscreen interface.
2
Inspect the wiper control stalk for physical damage or obstruction.
3
Scan the vehicle’s systems using a Tesla diagnostic tool to check for error codes related to the wiper system.
4
Verify the wiper motor and relay functionality by testing their electrical connections.
5
Reset the vehicle’s software by performing a soft reboot of the touchscreen.

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
•Tesla diagnostic tool

Parts Required

•Wiper motor (if faulty)
•Wiper relay (if faulty)

Related Faults

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Diagnostic Steps

1
Check the wiper control settings in the vehicle’s touchscreen interface.
2
Inspect the wiper control stalk for physical damage or obstruction.
3
Scan the vehicle’s systems using a Tesla diagnostic tool to check for error codes related to the wiper system.
4
Verify the wiper motor and relay functionality by testing their electrical connections.
5
Reset the vehicle’s software by performing a soft reboot of the touchscreen.

Solution

1. Preparation

Ensure the vehicle is parked and the ignition is off.
Disconnect the negative terminal of the battery to prevent electrical shorts.
Gather necessary tools: socket set, multimeter, and Tesla diagnostic tool.

2. Inspect and Clean the Wiper Control Stalk

Remove the steering column cover using a socket set.
Inspect the wiper control stalk for debris or damage.
Clean any dirt or obstructions from the stalk mechanism.
Reassemble the steering column cover.

3. Test the Wiper Motor and Relay

Locate the wiper motor and relay in the vehicle's fuse box.
Use a multimeter to check the voltage at the wiper motor connector while the wipers are activated.
If there is no voltage, test the relay for continuity and replace if faulty.
If the motor is receiving power but not functioning, replace the wiper motor.

4. Software Reset

Reconnect the negative battery terminal.
Perform a soft reboot of the touchscreen by holding down the two scroll wheels on the steering wheel until the screen turns off and then back on.
Check the wiper settings in the touchscreen interface and test the wipers again.