my Tesla Outback's windshield wipers won't turn off how to fix them

Subaru Outback 4th Generation (2010-2014)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

527 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 components.
•Ensure the vehicle is turned off and in park before inspection.

Symptoms

•Windshield wipers continuously running
•Wiper control stalk not responding
•Possible dashboard warning lights illuminated
•Increased battery drain due to wipers running continuously
•Wipers may operate erratically (e.g., changing speed unexpectedly)

Diagnostic Steps

1
Inspect the wiper control stalk for physical damage or obstruction.
2
Check for any blown fuses related to the windshield wiper system.
3
Scan the vehicle’s onboard diagnostics (OBD-II) for any error codes.
4
Test the wiper motor and its electrical connections for faults.
5
Verify the functionality of the wiper relay in the fuse box.

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

•Screwdriver set
•Torx bit set
•Fuse puller or needle-nose pliers
•Multimeter
•Socket set

Parts Required

•Wiper control stalk (if defective)
•Windshield wiper motor (if faulty)
•Wiper relay (if malfunctioning)
•Replacement fuses (if blown)

Related Faults

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Diagnostic Steps

1
Inspect the wiper control stalk for physical damage or obstruction.
2
Check for any blown fuses related to the windshield wiper system.
3
Scan the vehicle’s onboard diagnostics (OBD-II) for any error codes.
4
Test the wiper motor and its electrical connections for faults.
5
Verify the functionality of the wiper relay in the fuse box.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a flat surface and the ignition is off.
Disconnect the vehicle's battery to prevent electrical shock.

2. Inspect and Replace the Wiper Control Stalk

Tools Required: Screwdriver set, Torx bit set.
Remove the steering column cover using a screwdriver.
Unscrew and disconnect the wiper control stalk from the harness.
Replace with a new wiper control stalk if damage is found.
Reattach the steering column cover.

3. Check and Replace Fuses

Tools Required: Fuse puller or needle-nose pliers.
Locate the vehicle’s fuse box (refer to the owner’s manual).
Identify the fuse for the windshield wipers and check if it is blown.
If blown, replace it with a fuse of the same amperage rating.

4. Test the Wiper Motor

Tools Required: Multimeter, socket set.
Reconnect the battery.
Disconnect the wiper motor connector.
Use a multimeter to check for voltage at the connector when the wiper switch is activated.
If no voltage is present, the issue may lie in the relay or wiring; replace the wiper motor if voltage is present but the motor does not operate.

5. Replace the Wiper Relay

Tools Required: Socket set, screwdriver.
Locate the wiper relay in the fuse box.
Remove the relay and inspect for damage.
Replace with a new relay of the same specifications.