how to reset the door ajar sensor on my Ford F-150 13th Generation (2015-2020)

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

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

442 words

Problem Statement

Learn how to reset the door ajar sensor on your Ford F-150 (2015-2020). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components to avoid shorts and shocks.

Symptoms

•Dashboard warning light indicating 'door ajar' is illuminated
•Interior lights remain on when the vehicle is off
•Chimes or alerts sounding intermittently
•Difficulty locking doors remotely
•Increased battery drain due to lights not turning off

Diagnostic Steps

1
Inspect all door latches and hinges for debris or damage that could affect sensor operation.
2
Check the wiring harness and connectors leading to the door ajar sensor for any visible damage or corrosion.
3
Use an OBD-II scanner to check for any related error codes that might indicate sensor or wiring issues.

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

•OBD-II scanner
•Screwdriver set
•Soft cloth
•Lubricant (optional)

Parts Required

•Door ajar sensor (if replacement is necessary)

Related Faults

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Diagnostic Steps

1
Inspect all door latches and hinges for debris or damage that could affect sensor operation.
2
Check the wiring harness and connectors leading to the door ajar sensor for any visible damage or corrosion.
3
Use an OBD-II scanner to check for any related error codes that might indicate sensor or wiring issues.

Solution

1. Preparation

Gather necessary tools and materials.
Ensure the vehicle is parked on a level surface and the ignition is off.
Disconnect the battery to prevent any electrical shorts.

2. Inspect Door Latches

Open each door fully and examine the door latches for any physical obstruction.
Clean any debris or dirt from the latch mechanism using a soft cloth and lubricant if necessary.

3. Check and Reset the Sensor

Locate the door ajar sensor, usually positioned within the door latch mechanism.
Disconnect the wiring harness from the door ajar sensor.
Reconnect the harness to reset the sensor.
If applicable, perform a manual reset by pressing and holding the door lock button on the key fob for a few seconds while in the vehicle.

4. Reconnect Battery and Test

Reconnect the battery terminals, ensuring a secure connection.
Start the vehicle and check if the warning light has turned off.
Close and open each door to verify the sensor is functioning properly.