how to fix the door ajar light staying on in my Toyota Camry Eighth Generation (2018-present)

Toyota Camry Eighth Generation (2018-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

538 words

Problem Statement

Learn how to fix the door ajar light issue in your Toyota Camry (2018-present). Step-by-step guide with 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 systems to prevent shorts or shocks.

Symptoms

•Door ajar warning light illuminated on the dashboard
•Interior lights remain on when doors are closed
•Difficulty locking doors with the remote or key fob
•Possible battery drain due to lights staying on
•No audible chime when doors are opened or closed

Diagnostic Steps

1
Inspect all doors to ensure they are fully closed.
2
Use an OBD-II scanner to check for any related error codes.
3
Visually inspect door switches for damage or obstructions.
4
Test the door switches using a multimeter to check for continuity.
5
Examine the wiring harness connected to the door switches for any signs of wear or damage.
6
Check the Body Control Module (BCM) for faults related to door sensors.

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
•Multimeter
•Socket set
•Screwdriver set

Parts Required

•Replacement door switch (if faulty)
•Electrical contact cleaner (if needed)

Related Faults

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Diagnostic Steps

1
Inspect all doors to ensure they are fully closed.
2
Use an OBD-II scanner to check for any related error codes.
3
Visually inspect door switches for damage or obstructions.
4
Test the door switches using a multimeter to check for continuity.
5
Examine the wiring harness connected to the door switches for any signs of wear or damage.
6
Check the Body Control Module (BCM) for faults related to door sensors.

Solution

1. Preparation

Tools Required: OBD-II scanner, multimeter, socket set, screwdriver set
Disconnect the negative battery terminal to ensure safety while working on electrical components.

2. Inspect Door Switches

Sub-steps:
1. Remove the door panel for the affected door by unscrewing and unclipping it.
2. Locate the door switch, usually mounted near the door latch.
3. Examine the switch for physical damage or corrosion.
4. Clean the switch terminals with electrical contact cleaner if needed.

3. Test and Replace Door Switch

Sub-steps:
1. Use a multimeter to check continuity across the door switch terminals when the door is both open and closed.
2. If continuity is not present when the door is closed, replace the door switch.
3. To replace, disconnect the wiring harness from the old switch and install the new switch in reverse order.

4. Check Wiring and Connectors

Sub-steps:
1. Inspect the wiring harness connected to the door switch for any breaks or frayed wires.
2. Repair any damaged wiring with solder and heat shrink tubing or replace the harness if necessary.
3. Reconnect the wiring harness securely to the door switch.

5. Reassemble and Test

Sub-steps:
1. Reattach the door panel and ensure all clips and screws are secured.
2. Reconnect the negative battery terminal.
3. Verify the door ajar light is functioning correctly by opening and closing the doors.