Description
Control Unit For Sliding Rear Doors For Citroën C8 And Peugeot 807. Tested.
This sliding rear door control unit is a direct-fit electronic module designed for Citroën C8 and Peugeot 807 models. It manages the opening and closing sequences, motor control, safety sensors and interlocks for the sliding door system, ensuring smooth, coordinated operation and integrated fault monitoring. Ideal for professional workshops and experienced DIYers, this unit is commonly searched by its part numbers (e.g. 1400500180, 1488780080, 9138H4) when replacing a faulty module.
Technicians will appreciate that the module uses the vehicle’s existing harness connectors and typically installs behind interior trim panels near the sliding door track. After replacement the unit may require initialization or coding to restore full functionality with the vehicle’s comfort and locking systems.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C8; Peugeot 807
- Product Codes: 1400500180, 1488780080, 9138H4
- Other Numbers: NFP
Installation Recommendations
- Disconnect The Battery Before Starting Work To Prevent Short Circuits And Protect The Module.
- Remove The Interior Trim Panels Around The Sliding Door And Locate The Control Unit Mounted Near The Door Track Or B-Pillar.
- Unplug The Multi-Pin Connector Carefully, Release Any Securing Clips And Remove The Fasteners Holding The Module In Place.
- Install The Replacement Unit In Reverse Order, Ensuring Connectors Are Fully Seated And Locking Tabs Engaged.
- After Mechanical Installation, Perform Any Required Initialization, Adaptation Or Coding Using Manufacturer Diagnostic Tools (DiagBox/Lexia/PP2000) If Necessary.
Installation And Coding – Important
- Unit Is Used And Is “Paired” With The Original Vehicle (VIN/PIN/Keys).
- Activation Options:
- Cloning Data From The Old Unit (EEPROM/Flash) – After Cloning The Unit Is Plug And Play.
- Virginization And Subsequent Initialization/Telecoding Via DiagBox (Or Online) + Key Adaptation.
- Recommended To Be Performed By A Specialist With PSA Service Equipment (DiagBox/Lexia/PP2000).
- Always Disconnect The Battery Before Removal/Installation And Follow Manufacturer Procedures To Avoid Damaging The Unit.
How Replacement Is Performed
Access The Module By Removing The Interior Trim Near The Sliding Door Track. After Disconnecting The Battery, Release The Connector Locks And Remove The Fixing Screws Or Clips. Fit The New Unit In Place, Secure It Mechanically And Reconnect The Harness. Depending On The Unit’s State (Used/Cloned Or Virgin), Perform Cloning Or Coding Steps To Match The Vehicle’s Comfort System.
Why This Part Fails Most Often
- Water Ingress Or Moisture Causing Corrosion On Connectors Or Circuit Board Tracks.
- Connector Damage Or Wiring Harness Wear From Repeated Door Movement.
- Electrical Surges, Short Circuits Or Motor Overloads That Stress The Module.
- Internal Component Aging (Electrolytic Capacitors, Solder Joints) In Units With High Mileage.
- Mechanical Impact Or Crash Damage Affecting Door Sensors Or The Control Unit Housing.
Replacement Of The Sliding Door Control Unit Restores Reliable Door Operation And Safety Interlocks When The Cause Is Electronic Failure. Always Verify Mechanical Door Components (Rails, Rollers, Motors, And Sensors) To Prevent Repeating Failures After Module Replacement.
