Description
Electric central locking actuator for the right rear door of the Peugeot 307 (Passenger Side Door).
This Electric Central Locking Actuator (Right Rear Door) is a practical direct-replacement part for Peugeot 307 owners and professional workshops. Supplied under part code 9138A4, it restores reliable locking, unlocking and latch operation on the passenger-side rear door. The unit is suitable for mechanics and competent DIYers who need a fast, correct-fit repair to eliminate intermittent locking, noisy or non-functioning door latches and failures of the central locking system.
Technical Information
- Manufacturer: Stellantis / Citroën / Peugeot
- Model: Peugeot 307
- Product Codes: 9138A4
- Other Numbers: NFP
Fitment
Designed For The Right Rear (Passenger Side) Door Of The Peugeot 307. Check Door Position And Part Number 9138A4 When Selecting The Replacement.
Function And Symptoms
The Door Lock Actuator Controls The Latch Mechanism And Central Locking Movement For The Rear Right Door. Common Symptoms Of A Faulty Unit Include Intermittent Locking/Unlocking, A Clicking Or Grinding Noise Inside The Door, The Door Staying Locked Or Unlocked, And A Non-Responsive Central Locking System For The Affected Door.
Typical Causes Of Failure
- Water Ingress And Corrosion Affecting The Motor Or Switches Inside The Actuator.
- Worn Or Broken Plastic Gears Inside The Actuator Mechanism.
- Electrical Faults Such As Damaged Wiring Harness Or Connector Contacts.
- Mechanical Wear From Long-Term Use Or Force Applied To The Door Latch.
Installation Recommendations
- Disconnect The Battery Before Starting Work To Avoid Short Circuits And To Protect The Vehicle Electrical System.
- Carefully Remove The Inner Door Trim And Moisture Barrier To Access The Lock Assembly. Keep Clips And Fasteners Organized.
- Disconnect The Electrical Connector To The Actuator And Unscrew Mounting Bolts. Note The Position Of Linkages And Cables For Correct Reassembly.
- Transfer Any Required Linkages Or Rods From The Old Unit To The New Unit If They Are Not Supplied Attached.
- Fit The Replacement Actuator, Reconnect The Electrical Connector And Check Movement Before Refitting The Moisture Barrier And Door Trim.
- Test Central Locking Operation And Manual Latch Function Several Times With The Door Open And Closed To Confirm Correct Installation.
- Use Correct Tools And Avoid Excessive Force On Plastic Components. Apply Suitable Lubricant To The Latch If Necessary.
Why This Part Most Often Breaks
Road Salt, Moisture And Dirt Entering The Door Cavity Lead To Corrosion Of Internal Components And Failure Of The Small Electric Motor Or Microswitches. In Addition, Plastic Gear Teeth May Become Brittle Over Time, Causing Slippage Or Complete Loss Of Drive. Repeated Heavy Use And Mechanical Stress From Misalignment Or Worn Hinges Accelerate Wear.
For Professional Fitment, Use Proper Workshop Equipment And Follow Manufacturer Procedures When Removing And Installing Door Components. After Replacement, Verify Central Locking Integration And Smooth Latch Operation On The Road.
