Description
Seat Memory Settings Controller For Citroën C8, Peugeot 807 And Other Models.
This Seat Memory Controller (part number 6554H3) is a direct-fit electrical component used on Citroën C8 and Peugeot 807 vehicles to store and recall driver seat positions. It controls the memory function that saves preferred seat positions and communicates with the seat adjustment motors and the vehicle’s comfort electronics. The part is commonly referenced by its code 6554H3 and is sought after by professional workshops and DIY mechanics for reliable restoration of memory seat functionality.
Technical Information
Manufacturer: Citroën / Peugeot (Stellantis)
Model: Citroën C8; Peugeot 807
Product Codes: 6554H3
Additional Numbers: NFP
Function And Application
The controller stores multiple seat position presets and sends position commands to the seat motors when a preset is selected. It is mounted on or near the seat (side panel or under-seat area depending on model) and connects to the seat’s wiring harness. When functioning correctly, it enables quick recall of lumbar, backrest, and fore/aft positions for different drivers.
Common Symptoms And Failure Modes
- Loss Of Memory Function: Presets Are Not Saved Or Recalled.
- Intermittent Operation: Memory Works Sporadically, Often In Wet Or Corroded Conditions.
- Complete Failure: No Response From Memory Buttons While Manual Seat Adjustment Still Works.
Typical causes include connector corrosion, broken solder joints on the PCB, moisture ingress, wear from long service life, or damage from impact and seat movement. Electrical issues in the seat wiring (shorts/opens) or blown fuses can mimic controller faults.
Replacement And Installation
General Replacement Steps (Overview For Experienced Mechanics):
- Disconnect The Battery Before Any Work To Prevent Short Circuits And Protect Sensitive Electronics.
- Move The Seat To A Position That Gives Access To The Side Panel Or Under-Seat Trim.
- Remove Relevant Trim Panels And Unscrew The Controller Fasteners.
- Carefully Unplug The Multi-Pin Connector(s) From The Controller.
- Install The Replacement Controller, Reconnect Connectors And Secure Fasteners.
- Reconnect The Battery And Verify Memory Functionality By Programming And Recalling Presets.
Follow The Manufacturer’s Assembly Sequence Where Available And Avoid Pulling On Wiring. If The Connector Shows Corrosion, Clean Or Replace The Connector Before Final Installation.
Installation Recommendations
Always Work With The Battery Disconnected When Servicing Seat Electronics. Use Proper Trim Tools To Avoid Breaking Clips And Ensure Connectors Are Fully Seated. After Installation, Check All Seat Adjustment Functions And Program Memory Positions Per Vehicle Procedure. If The Memory Function Still Fails After Fitting A Known-Good Controller, Inspect The Seat Wiring, Fuses, And Related Comfort Modules.
Why This Part Commonly Fails
Seat Memory Controllers Are Regularly Exposed To Vibration, Moisture From Clothing Or Spills, And Mechanical Stress From Seat Movement. Over Time Solder Joints Can Crack, Connectors Can Corrode, And Internal Components Can Wear Out. High Mileage Vehicles And Cars That Have Experienced Water Ingress Or Interior Spills Are At Higher Risk Of Controller Failure.
Suitable For
Professionals And Competent DIY Mechanics Working On Citroën C8 And Peugeot 807 Models Seeking A Replacement For A Faulty Seat Memory Controller. Frequently Searched Using Part Number 6554H3.
