why are my Toyota Corolla E170 (2013-2019) power locks not responding

Toyota Corolla E170 (2013-2019)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

525 words

Problem Statement

Learn how to diagnose and fix non-responsive power locks in Toyota Corolla E170 (2013-2019). Step-by-step guide with tools and parts required.

Affected Component

Electrical

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to prevent short circuits

Symptoms

•Power lock buttons do not function when pressed
•Key fob fails to lock or unlock the doors
•Lock indicator lights on the dashboard do not illuminate
•Sound of locking mechanism (clicking noise) is absent
•Manual lock operation works but electronic controls do not

Diagnostic Steps

1
Check the battery voltage of the key fob to ensure it is functioning properly
2
Inspect the fuses related to the power locks for any blown fuses
3
Use an OBD-II scanner to check for any stored error codes that might indicate an electrical issue
4
Test the door lock actuators by applying direct power to determine if they are operational
5
Examine the wiring harnesses and connectors for any damage or corrosion

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
•Screwdrivers (flathead and Phillips)
•Socket set
•Fuse puller
•Multimeter

Parts Required

•Key fob battery (CR2032)
•Replacement fuse (if blown)
•Door lock actuator (if faulty)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Check the battery voltage of the key fob to ensure it is functioning properly
2
Inspect the fuses related to the power locks for any blown fuses
3
Use an OBD-II scanner to check for any stored error codes that might indicate an electrical issue
4
Test the door lock actuators by applying direct power to determine if they are operational
5
Examine the wiring harnesses and connectors for any damage or corrosion

Solution

1. Preparation

Gather all necessary tools and parts.
Disconnect the vehicle battery to ensure safety while working on electrical components.

2. Check and Replace the Key Fob Battery

Remove the key fob cover using a flathead screwdriver.
Replace the old battery with a new one of the same type (typically CR2032).
Reassemble the key fob and test the locking function.

3. Inspect and Replace Fuses

Locate the fuse box (usually under the dashboard or in the engine compartment).
Use a fuse puller or needle-nose pliers to remove the power lock fuse (check the owner’s manual for the exact fuse location).
Inspect the fuse for continuity; replace it if it is blown with a new fuse of the same amperage.

4. Test and Replace Door Lock Actuators

Remove the door panel to access the door lock actuator.
- Use a socket set to remove screws and clips.
- Carefully pry off the panel to avoid damage.
Disconnect the actuator's wiring harness and apply 12V directly to the actuator terminals to test if it operates.
If the actuator does not respond, replace it with a new actuator, ensuring proper alignment during installation.

5. Reassemble and Reconnect

Reattach the door panel, ensuring all clips and screws are secured.
Reconnect the vehicle battery.
Test the power locks again using both the switch and key fob.