Description
Electric control for the right rear sliding door for Citroën C8 and Peugeot 807
Product Overview
This electric control unit is designed to operate the right rear sliding door on Citroën C8 and Peugeot 807 models. It combines the motor/actuator and control mechanism that open, close and lock the sliding door smoothly and safely. Ideal for workshops and DIY mechanics who need a reliable replacement part with the correct fitment for the Stellantis MPV platform.
Key Benefits
- Direct Fit For Citroën C8 And Peugeot 807 — Designed To Match Factory Mounting Points And Connectors.
- Restores Full Power Sliding Door Functionality — Opens, Closes And Locks With Factory Behaviour.
- Durable Motor And Gearset — Built To Withstand Repeated Use In Passenger Vehicles.
- Commonly Searched By Part Number 9138Q5 — Improves Findability For Mechanics And DIYers.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C8, Peugeot 807
- Product Codes: 9138Q5
- Other Numbers: 9138 Q5
Function And Application
The unit controls the right-side rear sliding door movement and locking. It receives commands from the vehicle’s body control system and converts electrical input into mechanical motion via an integrated motor and gearbox. The assembly also includes limit switches or sensors to stop travel at the end positions and prevent motor overload.
Typical Failure Modes And Service Life
Failures Are Most Often Caused By:
- Water Ingress And Corrosion — Moisture Enters Seals Or Connectors, Causing Electrical Faults Or Gear Corrosion.
- Wear Of Gears Or Plastic Components — Repeated Use Can Wear The Gear Teeth And Sliding Mechanism.
- Motor Burnout Or Overcurrent — Heavy Use Or Jammed Door Can Overload The Motor.
- Damaged Wiring Or Connectors — Chafing, Rodent Damage Or Connector Corrosion Leading To Intermittent Operation.
The Actual Service Life Depends On Use, Environment And Maintenance. Parts On Older Or High-Mileage Vehicles Are More Likely To Require Replacement.
Installation Recommendations
Intended For Experienced Mechanics And Competent DIYers. Typical Replacement Steps:
- Disconnect The Vehicle Battery Before Starting Work To Avoid Short Circuits And To Protect Vehicle Electronics.
- Remove Interior Door Trim Panels Carefully To Access The Sliding Door Mechanism And Control Unit. Retain Fasteners And Clips For Reassembly.
- Unplug Electrical Connectors And Detach Any Linkages Or Mounting Bolts Holding The Old Unit.
- Install The Replacement Unit In The Correct Orientation, Secure All Mounting Points, Reconnect Linkages And Electrical Plugs.
- Reconnect Battery And Test Door Operation Several Times Through Full Travel To Check For Smooth Movement, Proper Locking, And Absence Of Error Messages.
- Adjust End Stops Or Cable Tension If Required According To Manufacturer Procedure.
Always Follow Manufacturer Safety Guidelines And Use Appropriate Tools. Avoid Forcing The Door Mechanism; If The Door Is Jammed, Diagnose The Cause Before Replacing The Control Unit.
Why This Part Fails Most Often
Sliding Door Control Units Are Exposed To Water, Road Debris And Constant Mechanical Stress. Corrosion Of Electrical Contacts, Gradual Wear Of Internal Gears, And Motor Overload From Obstructions Are The Primary Causes. Regular Inspection Of Door Seals, Drains And Wiring Can Extend Service Life.
Compatibility And Fitment Notes
Designed For Fitment On Citroën C8 And Peugeot 807 MPVs Sharing The Same Sliding Door Architecture. Confirm Correct Part Number 9138Q5 When Ordering To Ensure Direct Replacement. The Unit Uses The Original-Style Connectors And Mounting Points, Allowing Straightforward Swap-Over In Most Cases.
Recommended Tools And Workshop Tips
- Trim Removal Tools, Ratchet Set, Torx/Special Fasteners As Required.
- Multimeter To Verify Power And Ground At The Connector If Door Does Not Respond.
- Inspect Door Tracks And Rollers For Wear — Replace Worn Rollers To Prevent Premature Failure Of The New Unit.
Spare Parts And Additional Advice
When Replacing The Control Unit, Consider Inspecting Or Replacing Adjacent Mechanical Components Such As Rollers, Tracks And Cable Guides. Ensuring The Sliding Mechanism Is Free-Moving Reduces Load On The New Motor And Improves Longevity.
