my Tesla Model S Original (2012-2020) wipers won't turn off how do I fix this

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

515 words

Problem Statement

Learn how to diagnose and fix windshield wipers that won't turn off in Tesla Model S (2012-2020). Step-by-step guide with tools and safety tips.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the vehicle's battery before working on electrical components to avoid shock.

Symptoms

•Windshield wipers continuously operate despite being turned off
•Intermittent wiper function may not respond to settings
•Wiper control stalk may feel unresponsive
•Possible warning messages on the dashboard related to wipers
•Malfunctioning washer fluid spray system

Diagnostic Steps

1
Inspect the wiper control stalk for any physical damage or signs of wear.
2
Check for any software updates available for the vehicle using the Tesla app or onboard settings.
3
Scan for error codes using a compatible OBD-II scanner to identify any electronic issues.
4
Perform a visual inspection of the wiper motor and wiring for any signs of corrosion or damage.
5
Test the wiper relay by swapping it with a similar relay in the fuse box to see if the problem persists.

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
•Socket set
•Multimeter
•Torque wrench
•Flathead screwdriver

Parts Required

•Wiper relay (if faulty)

Related Faults

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Diagnostic Steps

1
Inspect the wiper control stalk for any physical damage or signs of wear.
2
Check for any software updates available for the vehicle using the Tesla app or onboard settings.
3
Scan for error codes using a compatible OBD-II scanner to identify any electronic issues.
4
Perform a visual inspection of the wiper motor and wiring for any signs of corrosion or damage.
5
Test the wiper relay by swapping it with a similar relay in the fuse box to see if the problem persists.

Solution

1. Preparation

Gather required tools and parts.
Ensure the vehicle is parked on a level surface and the ignition is off.
Disconnect the vehicle's 12V battery to prevent electrical shock.

Tools Required:

OBD-II scanner
Socket set
Multimeter
Torque wrench
Flathead screwdriver

2. Inspect and Replace Wiper Relay

Locate the fuse box under the dashboard on the driver's side.
Remove the cover of the fuse box using a flathead screwdriver.
Identify the wiper relay (refer to the fuse box diagram) and remove it by pulling it out gently.
Test the relay using a multimeter for continuity. If faulty, proceed to replace it with a new relay.
Reinstall the new relay back into the fuse box and secure the cover.

3. Reset Wiper Motor

Reconnect the 12V battery once the relay is replaced.
Turn the ignition to the "On" position without starting the vehicle.
Move the wiper control stalk through all positions (off, low, high, and intermittent) to reset the motor functions.
Test the wiper operation to ensure they respond correctly.

4. Software Reset (if applicable)

If wipers still malfunction, perform a soft reboot of the vehicle’s software by holding down both scroll wheels on the steering wheel until the screen resets.
After reboot, check if the wipers operate properly.