my Tesla Outback's windshield wipers won't turn off what should I do

Subaru Outback 5th Generation (2015-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

458 words

Problem Statement

Learn how to diagnose and fix windshield wipers that won't turn off in Tesla Outback. 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 shocks or shorts.

Symptoms

•Windshield wipers continuously running
•Wiper control stalk unresponsive
•Possible warning lights on the dashboard
•Water spray system may remain activated
•Increased battery drain due to continuous operation

Diagnostic Steps

1
Inspect the wiper control stalk for physical damage or obstruction.
2
Check the vehicle's settings for wiper operation mode via the infotainment system.
3
Scan the vehicle’s onboard computer using a diagnostic tool for any error codes related to the wiper system.
4
Verify the functionality of the wiper relay by listening for clicking sounds when the wipers are commanded to operate.
5
Inspect the fuse for the wiper system to ensure it is intact and functioning properly.
6
Check the wiring harness connected to the wiper motor for any signs of damage or corrosion.

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
•Screwdriver set
•Diagnostic tool (OBD-II scanner)

Parts Required

•Wiper relay
•Wiper control stalk (if needed)

Related Faults

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Diagnostic Steps

1
Inspect the wiper control stalk for physical damage or obstruction.
2
Check the vehicle's settings for wiper operation mode via the infotainment system.
3
Scan the vehicle’s onboard computer using a diagnostic tool for any error codes related to the wiper system.
4
Verify the functionality of the wiper relay by listening for clicking sounds when the wipers are commanded to operate.
5
Inspect the fuse for the wiper system to ensure it is intact and functioning properly.
6
Check the wiring harness connected to the wiper motor for any signs of damage or corrosion.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the 12V battery to prevent electrical shorts while working on the wiper system.

2. Inspect and Replace the Wiper Relay

Locate the wiper relay in the fuse box (refer to the owner’s manual for exact location).
Remove the relay using a socket set or pliers.
Replace with a new relay of the same specifications.
Reconnect the battery.

3. Replace the Wiper Control Stalk

Remove the steering wheel cover using a screwdriver.
Disconnect the wiring harness from the back of the control stalk.
Remove the control stalk by unscrewing any securing screws.
Install the new control stalk by reversing the removal steps.
Reconnect the battery and test the functionality.

4. Verify Wiring and Connections

Inspect the wiring harness leading to the wiper motor for frays or breaks.
Repair or replace any damaged wiring.
Ensure all connectors are secure and free from corrosion.