Description
Electric Driver’s Seat Control for Peugeot 407
Replacement electric seat control unit designed for the driver’s seat of the Peugeot 407. This unit restores full power adjustment functions including fore/aft, height, backrest angle and lumbar adjustment where fitted. Frequently searched under part numbers 9647058177, 8914ES or 8899PP, the module is ideal for mechanics and experienced DIYers looking to repair non-responsive or intermittently working electric seat systems quickly and cost-effectively.
Technical Information
- Manufacturer: Stellantis / Peugeot / Citroën
- Model: Peugeot 407
- Product Codes: 9647058177, 8914ES
- Other Numbers: 8899PP
Compatibility
Compatible with Peugeot 407 models equipped with an electric driver’s seat (typical production years 2004–2011). Compatibility depends on the vehicle’s equipment level and the exact seat variant; searching the part number (9647058177, 8914ES, 8899PP) is a common and efficient way to find matching vehicles and applications.
Function
The control unit receives inputs from the seat switches and controls the seat motors to adjust fore/aft position, seat height, seat tilt, backrest angle and, when present, lumbar support. It also interprets position memory commands if the vehicle is equipped with memory seats. Proper operation ensures smooth, accurate seat movement and prevents motor overrun or shorts.
Common Failure Causes
- Connector corrosion or poor contact from moisture or spilled liquids leading to intermittent or complete loss of function.
- Wear of internal electronic components due to age, heat or electrical spikes.
- Mechanical overload from blocked or damaged seat mechanisms that stress the control unit and motors.
- Damaged wiring harnesses or crushed/shorted cables under the seat due to seat travel and movement.
How Often It Fails
There is no fixed service interval for seat control units. Failures commonly appear on higher-mileage vehicles or after prolonged exposure to moisture or mechanical damage. Typical onset of faults is often after several years of use, depending on environment and maintenance.
Replacement Guide
High-level steps for replacement (only for experienced technicians or skilled DIYers):
- Disconnect the vehicle battery and wait at least 1–2 minutes to remove residual system voltage.
- Move the seat to the most accessible position to reach fasteners and connectors.
- Remove seat trim and covers carefully to access the control module and wiring harness.
- Document connector locations and switch positions before unplugging. Unplug the electrical connectors and remove mounting screws.
- Install the replacement unit, secure fasteners to original torque where specified, reconnect all connectors and re-fit trim.
- Reconnect the battery, test all seat functions and memory positions. Verify smooth operation and listen for abnormal motor noise.
Installation Recommendations
- Always disconnect the battery before starting work to avoid short circuits and airbag system triggers.
- Handle connectors by their housings; avoid pulling on wires. Clean and inspect connector pins for corrosion and ensure good contact.
- Check seat rails and mechanical components for binding before refitting the control unit—mechanical resistance can overload the new module.
- If seat has memory functions or fault codes persist after replacement, use a suitable diagnostic tool to clear faults and confirm correct operation.
- When in doubt or if coding/adaptation is required, have the unit installed by a qualified technician with appropriate tools and knowledge of Peugeot electrical systems.
Why This Part Is Worth Buying
Replacing a faulty seat control unit restores comfort, safety and vehicle usability at a fraction of the cost of a complete seat assembly. For garages and DIYers, matching the part number (9647058177 / 8914ES / 8899PP) ensures you get the correct unit for the Peugeot 407 driver’s seat.
Order now to get the correct replacement part and bring the power seat back to reliable operation.
