why do my Ford F-150's mirrors not adjust when using the controls

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

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

482 words

Problem Statement

Learn how to diagnose and fix mirror adjustment issues in Ford F-150. 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 avoid shocks or short circuits.

Symptoms

•Mirror adjustment controls are unresponsive
•No audible clicks or sounds when attempting to adjust the mirrors
•Mirrors remain fixed in their current position
•Possible simultaneous failure of other electrical components (e.g., power windows, locks)
•Check engine light may be illuminated (if related to electrical system issues)

Diagnostic Steps

1
Inspect the mirror control switch for physical damage or wear.
2
Use an OBD-II scanner to check for any related error codes in the vehicle’s electronic control unit (ECU).
3
Test the mirror adjustment switch for continuity using a multimeter.
4
Check the wiring harness and connectors for any signs of corrosion or disconnection.
5
Verify that the power supply to the mirror adjustment circuit is functioning by checking fuses related to the mirrors.
6
If applicable, examine the mirror motors by removing the door panel and testing them directly.

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

•Screwdrivers (flathead and Phillips)
•Trim removal tool
•Multimeter
•Electrical contact cleaner

Parts Required

•Mirror control switch (if faulty)
•Mirror motors (if faulty)

Related Faults

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Symptoms

•Mirror adjustment controls are unresponsive

•No audible clicks or sounds when attempting to adjust the mirrors

•Mirrors remain fixed in their current position

•Possible simultaneous failure of other electrical components (e.g., power windows, locks)

•Check engine light may be illuminated (if related to electrical system issues)

Diagnostic Steps

1
Inspect the mirror control switch for physical damage or wear.
2
Use an OBD-II scanner to check for any related error codes in the vehicle’s electronic control unit (ECU).
3
Test the mirror adjustment switch for continuity using a multimeter.
4
Check the wiring harness and connectors for any signs of corrosion or disconnection.
5
Verify that the power supply to the mirror adjustment circuit is functioning by checking fuses related to the mirrors.
6
If applicable, examine the mirror motors by removing the door panel and testing them directly.

Solution

1. Preparation

Gather all necessary tools and parts.
Disconnect the negative battery terminal to prevent electrical shorts.
Ensure that you have a clean and well-lit workspace.

2. Remove Door Panel

Sub-steps:
1. Use a screwdriver to remove any visible screws securing the door panel.
2. Carefully pry off plastic clips using a trim removal tool.
3. Disconnect any electrical connectors for power windows or locks if applicable.
4. Lift the panel upwards to remove it from the door frame.

3. Inspect and Test Mirror Control Switch

Sub-steps:
1. Remove the mirror control switch from the door panel.
2. Test the switch for continuity with a multimeter to confirm it is functioning.
3. If faulty, replace the mirror control switch with a new part.

4. Check Wiring and Connectors

Sub-steps:
1. Inspect the wiring harness for any visible damage or frayed wires.
2. Clean any corroded connectors with electrical contact cleaner.
3. Reconnect any loose connections securely.

5. Test Mirror Motors

Sub-steps:
1. Access the mirror motors by removing the mirror housing if necessary.
2. Connect the mirror motor directly to a power source to confirm it operates.
3. If the mirror motors do not respond, replace them with new parts.

6. Reassemble Door Panel

Sub-steps:
1. Reconnect all electrical connectors and ensure they are secure.
2. Align the door panel and press it back into place, ensuring all clips are seated.
3. Reinsert screws and tighten them to secure the panel.

Tools Required:

Screwdrivers (flathead and Phillips)
Trim removal tool
Multimeter
Electrical contact cleaner

Parts Required:

Mirror control switch (if faulty)
Mirror motors (if faulty)

Estimated Repair Time: 2-4 hours

Safety Warnings:

Disconnect the battery before working on electrical systems to avoid shocks or short circuits.