Description
Bosch Control Unit – Parking Assist for Citroën and Peugeot Vehicles.
This Bosch parking assist control unit manages the ultrasonic sensors and parking alerts on compatible Citroën and Peugeot models. Designed for professional garages and experienced DIY mechanics, the unit replaces faulty electronics that interpret sensor signals, trigger audible/visual warnings and communicate with the vehicle’s convenience systems. Many customers search by part number, so check the product codes below before ordering to ensure a direct fit.
Key Functions And Benefits
- Central Processing Of Parking Sensors: Interprets inputs from ultrasonic sensors and outputs distance warnings to the driver.
- OEM Quality Electronics: Bosch design intended for reliable signal processing and integration with vehicle systems.
- Direct Replacement: Matches original mounting and connector locations on listed models—reduces installation time for workshops.
- Improves Safety And Convenience: Restores malfunctioning park assist to help avoid low‑speed impacts and ease parking maneuvers.
Compatibility
Fits Selected Citroën And Peugeot Models Including:
- Citroën C3
- Citroën C3 Picasso
- Citroën C4 Picasso
- Citroën C5
- Peugeot 207
- Peugeot 308
Technical Information
- Manufacturer: Bosch
- Model: Citroën / Peugeot Parking Assist Control Unit (selected C3, C3 Picasso, C4 Picasso, C5, 207, 308)
- Product Codes: 0263004204, 9663821680
- Other Numbers: 1606383380, 1606383480, 1606516180, 1606516380, 6590EV, 6590EW
Installation Recommendations
- Safety First: Always disconnect the vehicle battery before starting work to avoid short circuits and protect the unit.
- Access: The unit is typically located behind the rear bumper or inside a rear trim panel—remove the bumper or access cover as required to reach the connector and mounting points.
- Electrical Connection: Inspect connectors and wiring for corrosion or damage; clean contacts and repair any frayed wiring before installing the new unit.
- Mounting: Secure the unit using the original fasteners and ensure it is positioned to avoid direct water ingress or mechanical impact.
- Calibration And Coding: After replacement, sensors and the control unit may require initialization or coding for proper operation. Use appropriate PSA diagnostic equipment for calibration where required (DiagBox/compatible diagnostic tool recommended for full functionality).
Most Common Failure Reasons
- Water Ingress And Corrosion: Moisture entering the unit or connector leads to corrosion of contacts and electronic failures.
- Impact Damage: Rear collisions or bumps can damage sensors or the control unit housing and internals.
- Electrical Surges And Short Circuits: Faulty wiring, poor grounding or power surges may damage internal electronics.
- Sensor Faults: Failed or shorted sensors can overload or disrupt the control unit’s operation, giving the impression of a failed module.
Service Life And Practical Tips
Service life depends on vehicle use and environmental exposure. Units in vehicles frequently exposed to moisture, road salt or minor impacts tend to fail earlier. When replacing the unit, also check sensor condition and wiring harness integrity—repairing related faults reduces the chance of repeat failures.
Notes For Mechanics And DIY Installers
Because this part is often searched by product number, confirm the part codes listed in Technical Information before ordering. If you are not comfortable with vehicle coding or calibration, have a trained technician with PSA diagnostic equipment perform the final setup to ensure full functionality.
