my Ford F-150 wipers won’t turn off, how do I fix this

Ford F-150 13th Generation (2015-2020)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

544 words

Problem Statement

Learn how to diagnose and fix the issue of windshield wipers not turning off in Ford F-150. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to avoid shock or shorts.
•Allow the vehicle to cool down before starting any work if it has been recently driven.

Symptoms

•Windshield wipers operate continuously regardless of switch position
•Wiper control stalk feels loose or unresponsive
•Possible buzzing or clicking noise from the wiper motor
•Wiper blades may not return to the home position
•Potential battery drain if wipers are left on for an extended period

Diagnostic Steps

1
Inspect the wiper switch for any visible damage or wear.
2
Use an OBD-II scanner to check for any related error codes.
3
Test the wiper relay by swapping it with a similar relay in the fuse box.
4
Check the wiring harness for any signs of shorts or corrosion.
5
Examine the wiper motor for any signs of malfunction or physical damage.
6
Verify the operation of the wiper control module if equipped.

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
•Multimeter
•Socket set
•Torque wrench

Parts Required

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

Related Faults

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Symptoms

•Windshield wipers operate continuously regardless of switch position

•Wiper control stalk feels loose or unresponsive

•Possible buzzing or clicking noise from the wiper motor

•Wiper blades may not return to the home position

•Potential battery drain if wipers are left on for an extended period

Diagnostic Steps

1
Inspect the wiper switch for any visible damage or wear.
2
Use an OBD-II scanner to check for any related error codes.
3
Test the wiper relay by swapping it with a similar relay in the fuse box.
4
Check the wiring harness for any signs of shorts or corrosion.
5
Examine the wiper motor for any signs of malfunction or physical damage.
6
Verify the operation of the wiper control module if equipped.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect Wiper Switch

Remove the steering column cover using a screwdriver.
Disconnect the electrical connector from the wiper switch.
Test the switch with a multimeter for continuity in different positions.
Replace the wiper switch if it fails the continuity test.

3. Check Wiper Relay

Locate the wiper relay in the fuse box (refer to the owner’s manual for exact location).
Remove the relay and inspect for damage.
Swap it with a similar relay (e.g., horn relay) to test functionality.
Replace the relay if it is defective.

4. Inspect Wiper Motor

Remove the wiper arms by loosening the nut and pulling them off the splines.
Disconnect the wiper motor electrical connector.
Remove the motor assembly from its mounting by unscrewing the bolts.
Test the motor with a multimeter to check for proper voltage and functionality.
Replace the wiper motor if it is not functioning correctly.

5. Reassemble Components

Reinstall the wiper motor and secure it with the mounting bolts.
Reconnect the wiper arm securely to the motor.
Reattach the steering column cover and reconnect the negative battery terminal.