how to fix intermittent wipers on Tesla Model S Original (2012-2020)

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

539 words

Problem Statement

Learn how to diagnose and fix intermittent wipers on 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 the battery before working on electrical systems to prevent shorts.
•Allow the vehicle to cool before working on any components near the engine bay.

Symptoms

•Wipers do not activate when set to intermittent mode
•Wipers operate continuously instead of intermittently
•Wipers activate unexpectedly or at incorrect intervals
•Dashboard warning message related to wiper system
•Wiper control stalk feels loose or unresponsive

Diagnostic Steps

1
Inspect the wiper control stalk for physical damage or looseness.
2
Scan the vehicle's computer for any error codes related to the wiper system using an OBD-II scanner.
3
Check the wiper motor operation by manually activating the wipers through the vehicle's interface.
4
Inspect wiper relay and fuses for any faults by visually checking or using a multimeter.
5
Verify the wiring harness connections to the wiper motor and control stalk for corrosion or damage.

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
•Screwdriver set
•Trim removal tool
•Fuse puller
•Torque wrench

Parts Required

•Wiper control stalk
•Wiper motor (if needed)
•Wiper relay (if needed)
•Fuses (if blown)

Related Faults

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Diagnostic Steps

1
Inspect the wiper control stalk for physical damage or looseness.
2
Scan the vehicle's computer for any error codes related to the wiper system using an OBD-II scanner.
3
Check the wiper motor operation by manually activating the wipers through the vehicle's interface.
4
Inspect wiper relay and fuses for any faults by visually checking or using a multimeter.
5
Verify the wiring harness connections to the wiper motor and control stalk for corrosion or damage.

Solution

1. Preparation

Ensure the vehicle is parked on a flat surface with the ignition off.
Disconnect the 12V battery to prevent electrical shorts.
Gather necessary tools and replacement parts.

2. Inspect and Replace Wiper Control Stalk

Tools Required: Screwdriver set, trim removal tool, new wiper control stalk.
Remove the steering column cover using a screwdriver.
Disconnect the wiring harness from the old wiper control stalk.
Replace with the new wiper control stalk by connecting the wiring harness and securing it back.
Reassemble the steering column cover.

3. Check and Replace Wiper Relay/Fuses

Tools Required: Multimeter, fuse puller.
Locate the fuse box in the front trunk (frunk) area.
Check the wiper fuse for continuity using a multimeter; replace if blown.
Locate the wiper relay and check for proper functioning; replace if faulty.

4. Inspect Wiper Motor

Tools Required: Socket set, torque wrench.
Remove the wiper arms using a socket set and pull them off carefully.
Detach the wiper motor from its mounting points.
Inspect the motor for any signs of damage or corrosion.
If necessary, replace the wiper motor with a new one, securing it to the mounting points with the correct torque specifications.

5. Reconnect Battery and Test

Reconnect the 12V battery.
Test the wipers in all modes (intermittent, low, high) to ensure proper operation.