Description
Driver Seat Control Unit for C8 and 807
This Driver Seat Control Unit is designed for Citroën C8 and Peugeot 807 models and is identified by part numbers 1491352080 and 6554H4. It replaces the original seat electronics that manage electric seat adjustment and related comfort features. Ideal for professional garages and competent DIY mechanics, this unit helps restore full seat functionality when motors, switches or electronics stop responding. Including known product codes in the description increases discoverability for searches by part number, model or symptom.
Technical Information
- Manufacturer: Bitron
- Model: Citroën C8, Peugeot 807
- Product Codes: 1491352080, 6554H4
- Other Numbers: NFP (as listed)
Function
The unit controls the electric adjustment functions of the driver’s seat: fore/aft movement, seatback angle, height adjustment and, where fitted, memory positions. It interprets inputs from switches, powers the seat motors through internal relays/transistors and communicates with vehicle networks if required. A properly working control unit ensures smooth, accurate movement and protects motors from overload.
Common Failure Modes
- Connector Corrosion Or Poor Contact: Moisture or dirty connectors cause intermittent or permanent loss of function.
- Electrical Overload Or Short Circuit: Jammed or seized motors can blow components inside the module.
- Wear And Ageing: Solder joints, relays or electronic components degrade over time, especially in high-mileage vehicles.
- Physical Damage: Impact or pressure to the seat base can damage the unit or its mounting and wiring.
Replacement And Installation
Replacement requires moderate electrical and mechanical skill. Typical procedure:
- Disconnect Battery: Always disconnect the negative battery terminal before starting to avoid short circuits and to protect electronics.
- Move Seat To Accessible Position: If possible, adjust the seat to reach mounting points and connectors.
- Remove Trim And Covers: Carefully remove seat trims to expose the control unit and wiring harness.
- Unplug Connectors And Unscrew Unit: Note connector locations and retainers; release locking tabs before pulling harnesses.
- Install Replacement Unit: Fit the unit in the original position, secure mounting screws and reconnect harnesses ensuring solid connection.
- Reconnect Battery And Test: Check all seat movements, limit switches and any memory functions. Cycle through full travel to confirm proper operation.
Installation Recommendations
- Observe Safety Precautions: Disconnect the battery and follow manufacturer procedures when working near airbags and seatbelt pretensioners.
- Inspect Wiring And Motors: Replace or repair damaged connectors, frayed wires or noisy/seized motors before fitting a new module.
- Secure Connectors Properly: Use dielectric grease on exposed connectors to reduce future corrosion in moist environments.
- Perform Functional Tests: Verify all axes of adjustment and any memory recall functions after installation.
- Professional Tools: Use appropriate trim tools to avoid damaging interior panels and a torque wrench for any seat fasteners.
Why This Part Fails Most Often
Seat control units commonly fail due to moisture ingress and connector corrosion, strain on wiring caused by repeated seat movement, and component fatigue after many years of use. Electrical faults often follow motor stalls or foreign objects trapped in seat tracks, which increase current draw and stress the module’s output stages.
Who Should Install
Installation is recommended for experienced mechanics or competent DIY enthusiasts familiar with vehicle electrical systems and interior trim removal. If diagnostics indicate wiring faults or motor problems, professional diagnosis can prevent premature failure of a replacement unit.
If the part numbers listed above match the unit you need to replace, ordering this control unit will restore seat adjustment functions and driver comfort in Citroën C8 and Peugeot 807 models.
