Description
Overview
This Parking Assist ECU is designed for PSA vehicles under the Citroën and Peugeot brands and is identified by part numbers such as 9629825180, 659078 and 601746. It manages the parking assistance system by processing signals from ultrasonic sensors and controlling audible and visual warnings. The unit is aimed at professional mechanics and experienced DIY enthusiasts who look up parts by product number.
Why This Part Matters
The parking assist ECU is the electronic heart of the parking aid system. When functioning correctly it interprets sensor inputs, triggers the dashboard indicators or displays, and activates the acoustic buzzer to help the driver judge distances while reversing. A faulty ECU can cause intermittent warnings, complete loss of parking assistance, or erroneous sensor messages.
Common Symptoms And Causes Of Failure
- Intermittent or no response from parking sensors despite sensors appearing intact.
- Constant or incorrect acoustic beeps and dashboard error messages.
- Electrical issues caused by water ingress, corrosion of connectors, wiring damage, short circuits or internal component failure.
- After body repairs or bumper replacement, the ECU may require inspection if sensors are reconnected or relocated.
Replacement And Installation Notes
Installation should be performed by an experienced technician or a competent DIYer comfortable with vehicle electrics. Typical replacement steps:
- Disconnect the vehicle battery before starting to avoid short circuits and fault codes.
- Locate and remove trim panels to access the ECU (position varies by model).
- Unplug the multi-pin connectors and any sensor harnesses attached to the module.
- Unbolt and remove the old ECU, then fit the replacement in the same orientation.
- Reconnect connectors, reassemble trim and reconnect the battery.
Note: Depending on the vehicle model and year, the replacement ECU may require coding, pairing or a software update to the vehicle’s body control module to restore full functionality; consult a workshop manual or diagnostic tool to confirm post-installation requirements.
Examples Of Compatible Models
Examples of PSA models that commonly use parking assist ECUs include Citroën C3, C4, C5 and Berlingo, and Peugeot 207, 308, 3008 and Partner. Always verify fitment by matching the vehicle VIN and the part number (9629825180 / 659078 / 601746) before purchase.
Technical Information
- Manufacturer: PSA (Citroën / Peugeot)
- Model: Various Citroën and Peugeot passenger models (verify by part number)
- Product Codes: 9629825180, 659078, 601746
- Other Numbers: 601.746 (alternate formatting), NFP (as supplied in source description)
Recommendations
Before replacing the ECU confirm sensor integrity and wiring continuity to avoid repeating the repair. For shops and DIYers: keep a diagnostic scanner ready to read fault codes and, if necessary, to perform any immobiliser or body module coding after fitment. If you are unsure about coding requirements, consult a qualified technician.
Order this Parking Assist ECU by its part number to ensure correct fitment and restore reliable parking assistance to the vehicle. Suitable for garages and self-repairers who search by product code and expect clear technical details.
