1. Check the door lock mechanism:
* Open the door from the outside.
* Locate the door lock mechanism, which is usually near the door handle.
* Inspect the mechanism for any visible damage, dirt, or obstructions.
* If the door has child lock activated, turn off the child lock.
2. Test the car key:
* Insert the car key into the door lock and turn it clockwise and anticlockwise to ensure it's functioning correctly and the key is not damaged or worn out.
3. Check the interior handle:
* Open the door from outside and try to pull up or push down the interior handle. If it has slack, try to tighten the bolts that hold the interior handle in place.
4. Remove and inspect the door panel:
* If the above steps don't work, you can follow the vehicle manual to open the door panel and inspect the inner mechanism.
* Check the linkage between the interior handle and the door lock mechanism for any damage or disconnected parts.
5. Replace faulty components:
* If you find any damaged or broken parts, replace them as per your vehicle's manual.
6. Reassemble the door:
* Once you've replaced the faulty parts, reassemble the door by following steps in the reverse order.
7. Check the door operation:
* After reassembling, try to open the door from the inside to check if the issue is resolved.
If the problem persists even after following these steps, it's recommended to consult with a professional mechanic or technician specialized in your Peugeot model for further assistance and a more precise diagnosis.
