my Ford F-150 13th Generation (2015-2020) has windshield wipers that won't stop

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

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

526 words

Problem Statement

Learn how to diagnose and fix windshield wipers that won't stop on a 2015 Ford F-150. 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 avoid shocks or shorts.
•Allow the vehicle to cool down before working near any engine components.

Symptoms

•Windshield wipers operate continuously regardless of the switch position
•Wiper control stalk does not respond to adjustments
•Possible water leakage from the wiper motor area
•Intermittent wiper function may not work
•Check engine light illuminated (if related electrical issue is present)

Diagnostic Steps

1
Check the wiper control switch for proper operation using a multimeter.
2
Inspect the wiper motor relay for faults or damage.
3
Scan the vehicle with an OBD-II scanner to check for any fault codes related to the wiper system.
4
Examine the wiring harness connected to the wiper motor for signs of shorts or frays.
5
Test the wiper motor directly to rule out a malfunctioning motor.
6
Inspect the body control module (BCM) for issues, as it controls wiper operation.

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

•Multimeter
•Screwdriver set
•Relay tester
•Socket set

Parts Required

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

Related Faults

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Diagnostic Steps

1
Check the wiper control switch for proper operation using a multimeter.
2
Inspect the wiper motor relay for faults or damage.
3
Scan the vehicle with an OBD-II scanner to check for any fault codes related to the wiper system.
4
Examine the wiring harness connected to the wiper motor for signs of shorts or frays.
5
Test the wiper motor directly to rule out a malfunctioning motor.
6
Inspect the body control module (BCM) for issues, as it controls wiper operation.

Solution

1. Preparation

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

2. Inspect and Replace the Wiper Control Switch

Tools Required: Multimeter, screwdriver set
Steps:
1. Remove the steering column cover using a screwdriver.
2. Locate the wiper control switch and disconnect the electrical connector.
3. Test the switch with a multimeter for continuity in all positions.
4. If faulty, replace the switch with a new unit.
5. Reconnect the electrical connector and reassemble the steering column cover.

3. Inspect and Replace the Wiper Motor Relay

Tools Required: Relay tester, socket set
Steps:
1. Locate the fuse box (usually under the dashboard or hood).
2. Identify the wiper motor relay using the fuse box diagram.
3. Remove the relay and test it using a relay tester.
4. If found defective, replace with a new relay.
5. Reinsert the relay into the fuse box.

4. Test the Wiper Motor

Tools Required: Multimeter, wiring diagram
Steps:
1. Disconnect the wiper motor from its electrical connector.
2. Use a multimeter to check for voltage at the connector while the wiper switch is activated.
3. If voltage is present and the motor does not operate, replace the wiper motor.
4. If no voltage is detected, trace back the wiring to identify the source of the issue.