Why Is Only One Door Lock Not Working in My Hyundai Tucson?

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Why Is Only One Door Lock Not Working in My Hyundai Tucson?

In my Hyundai Tucson, only the front passenger-side door lock isn’t responding to the key fob o r central locking. Could it be a motor actuator issue o r a wiring problem? How can I diagnose and fix this?

Gari Specialist asked on 14 Jun 2025 12:45:21 pm

1 Answer

8 views |

Gari Master - on 14 Jun 2025 12:48:14 pm

When only one door lock commonly the front passenger door stops working, the usual culprit is the door lock actuator motor inside the door that physically locks/unlocks. Other causes include:

Faulty wiring o r connector inside the door, damaged by moisture o r vibration.

Broken lock mechanism o r linkage.

A bad switch if the door has individual control buttons.

How to diagnose and fix:

Listen for a clicking sound when using the remote o r lock/unlock button no sound usually means actuator failure.

Remove the door panel to inspect and test the actuator motor.

Check wiring harness and connectors for corrosion o r damage.

Replace the actuator with a genuine o r high-quality aftermarket part.

Actuator replacements are common and affordable in Pakistan, available in major auto markets.