how to fix power door locks not working in Toyota Corolla E170 (2013-2019)

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

592 words

Problem Statement

Learn how to diagnose and fix power door locks not working in Toyota Corolla E170 (2013-2019). Step-by-step guide with tools and parts required.

Affected Component

Electrical

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the vehicle to cool down before handling components.

Symptoms

•Power door locks do not respond when using the key fob or interior switch.
•No sound or movement from the door lock actuators.
•Key fob may not unlock or lock the doors.
•Indicator lights on the dashboard may not illuminate when attempting to lock/unlock.
•Potentially blown fuse related to the power door lock system.

Diagnostic Steps

1
Check the vehicle’s fuse box for any blown fuses related to the power door locks.
2
Use an OBD-II scanner to check for any trouble codes that might indicate electrical issues.
3
Inspect the key fob battery and test its functionality.
4
Test the door lock switches on the driver’s side and passenger side for proper operation.
5
Visually inspect wiring and connectors at the door lock actuators for damage or corrosion.
6
Check the operation of the door lock actuators by applying direct power to them.

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
•Socket set
•Needle-nose pliers
•Fuse puller
•Flathead screwdriver
•Multimeter

Parts Required

•Replacement fuse (if blown)
•Key fob battery
•Door lock actuator (if defective)

Related Faults

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Symptoms

•Power door locks do not respond when using the key fob or interior switch.

•No sound or movement from the door lock actuators.

•Key fob may not unlock or lock the doors.

•Indicator lights on the dashboard may not illuminate when attempting to lock/unlock.

•Potentially blown fuse related to the power door lock system.

Diagnostic Steps

1
Check the vehicle’s fuse box for any blown fuses related to the power door locks.
2
Use an OBD-II scanner to check for any trouble codes that might indicate electrical issues.
3
Inspect the key fob battery and test its functionality.
4
Test the door lock switches on the driver’s side and passenger side for proper operation.
5
Visually inspect wiring and connectors at the door lock actuators for damage or corrosion.
6
Check the operation of the door lock actuators by applying direct power to them.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the negative battery terminal to avoid electrical shocks.
Ensure the vehicle is in a secure, flat area.

2. Check and Replace Fuse

Locate the fuse box (usually under the dashboard or in the engine compartment).
Remove the cover and identify the fuse for the power door locks using the diagram on the cover.
Use a fuse puller or needle-nose pliers to remove the fuse.
Inspect the fuse; if it is blown, replace it with one of the same amperage rating.

3. Test and Replace Key Fob Battery

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

4. Inspect and Repair Wiring/Connectors

Remove the door panel using a socket set to access the door lock actuator and wiring.
Inspect the connectors and wiring for any signs of damage.
Repair or replace any damaged wiring or connectors.

5. Test and Replace Door Lock Actuator

If the door lock actuators are not functioning properly, remove them by detaching the retaining clips.
Test the actuators by applying direct 12V power from a battery; if they do not operate, replace them.
Install new actuators by reversing the removal process and ensuring that they are securely connected.

6. Reassemble and Test

Reattach the door panel securely and reconnect the negative battery terminal.
Test all door locks using the key fob and interior switches to ensure proper operation.