Description
Product Overview
This Parking Assist ECU (Electronic Control Unit) is intended for PSA Group vehicles under the Citroen and Peugeot brands. The unit manages the vehicle’s ultrasonic parking sensors, interprets distance measurements and generates driver alerts (audible and visual). It is a common spare part often searched by its part numbers for quick fitment identification.
Key Functions
- Processes signals from ultrasonic parking sensors and calculates obstacle distance.
- Generates audible beeps and can feed information to instrument cluster displays or reverse assist systems.
- Communicates with the vehicle network (CAN) to coordinate warnings and system status.
- Designed for use in low-speed parking maneuvers and obstacle detection around the vehicle.
Installation & Replacement
Replacement is typically performed by a trained mechanic. General steps: disconnect the vehicle battery, access the control unit location (usually behind interior trim or near the rear bumper/boot area depending on model), disconnect wiring connectors, remove mounting fasteners and install the new unit. After mechanical fitment, reconnect the battery and perform a diagnostic check. In many cases the new ECU will require configuration or coding with a PSA diagnostic tool (for example DiagBox or equivalent) to match vehicle equipment and sensor calibration.
Common Faults And Causes
- Water ingress or corrosion on connectors and PCB tracks can cause intermittent failures.
- Impact damage to rear bumper area affecting sensors or ECU mounts.
- Electrical surges, short circuits or damaged wiring harnesses leading to ECU malfunction.
- Sensor failures or wiring faults that propagate errors to the ECU and disable the parking assist function.
Practical Tips
- When diagnosing, check sensor condition and wiring before replacing the ECU to avoid repeated replacements.
- Protect connectors from moisture and ensure secure mounting to prevent vibration-related faults.
- Have a dealer or specialist tool available for coding and clearing fault codes after replacement.
Technical Information
- Manufacturer: PSA (Citroen/Peugeot)
- Model: Various Citroen and Peugeot vehicles equipped with parking assist systems
- Product Codes: 9629825480, 659078, 601746
- Additional Numbers: NFP
Searchable by part numbers 9629825480 and 659078 for fast cross-referencing. If you are unsure about compatibility, compare the product codes with your vehicle’s original control unit label or consult a professional technician.
