how to fix the automatic door locks on my Toyota Corolla E170 (2013-2019)

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

604 words

Problem Statement

Learn how to diagnose and fix automatic door locks on Toyota Corolla E170 (2013-2019). 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 any electrical components to avoid shock or short circuits.

Symptoms

•Doors do not lock or unlock automatically when the vehicle is in motion.
•Key fob does not activate door locks.
•Door locks operate manually but fail to respond to electrical signals.
•Check for any warning lights on the dashboard related to the locking system.
•Unusual clicking or grinding noises from the locking mechanism.

Diagnostic Steps

1
Inspect the key fob battery for proper charge and replacement if necessary.
2
Use an OBD-II scanner to check for any trouble codes related to the door locking system.
3
Verify the operation of the door lock actuators by testing each door manually.
4
Check the wiring harness and connectors for any signs of damage or corrosion.
5
Test the door lock relay by swapping it with a similar relay in the fuse box.
6
Inspect the fuse related to the power door locks for continuity and replace if blown.

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
•Flathead screwdriver
•Panel removal tool

Parts Required

•Key fob battery (CR2032)
•Door lock actuator (if replacement is necessary)
•Fuses or relays (if faulty)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Symptoms

•Doors do not lock or unlock automatically when the vehicle is in motion.

•Key fob does not activate door locks.

•Door locks operate manually but fail to respond to electrical signals.

•Check for any warning lights on the dashboard related to the locking system.

•Unusual clicking or grinding noises from the locking mechanism.

Diagnostic Steps

1
Inspect the key fob battery for proper charge and replacement if necessary.
2
Use an OBD-II scanner to check for any trouble codes related to the door locking system.
3
Verify the operation of the door lock actuators by testing each door manually.
4
Check the wiring harness and connectors for any signs of damage or corrosion.
5
Test the door lock relay by swapping it with a similar relay in the fuse box.
6
Inspect the fuse related to the power door locks for continuity and replace if blown.

Solution

1. Preparation

Gather tools: OBD-II scanner, multimeter, socket set, flathead screwdriver, and replacement parts (if necessary).
Disconnect the vehicle battery to ensure safety while working on electrical components.

2. Replace Key Fob Battery

Open the key fob using a flathead screwdriver.
Remove the old battery and replace it with a new CR2032 battery, ensuring correct polarity.
Reassemble the key fob and test its functionality.

3. Repair or Replace Door Lock Actuators

Remove the door panel by:
1. Unscrewing all visible screws.
2. Carefully prying off the panel using a flathead screwdriver or panel removal tool.
3. Disconnecting any electrical connectors attached to the door panel.
Access the door lock actuator and test its functionality using a multimeter.
If defective, replace the actuator by:
1. Disconnecting the old actuator from the linkage.
2. Removing the mounting screws.
3. Installing the new actuator in reverse order.

4. Check and Repair Wiring

Inspect the wiring harness for any breaks or corrosion:
1. Look for frayed wires or exposed connectors.
2. Repair any damaged wiring with electrical tape or replace the harness if necessary.
Ensure all connections are secure.

5. Replace Fuse or Relay

Locate the fuse box and remove the cover.
Identify the fuse for the power door locks and inspect it for damage.
If blown, replace it with a fuse of the same amperage.
If the relay is suspected to be faulty, swap it with a similar one from the fuse box to test operation.