Description
High-quality used side impact sensor for Citroën and Peugeot vehicles. The side impact sensor is a critical element of the Supplemental Restraint System (SRS); it detects lateral impacts and triggers side airbags and pretensioners to protect occupants. Compatible with Citroën Berlingo, C5, Xsara, Xsara Picasso and Peugeot 206 and Partner, this unit is a common replacement part for PSA vehicles.
Installation
Always disconnect the vehicle battery and wait at least 10 minutes before starting work on the SRS circuit. Access varies by model but typically requires removal of interior trim panels on the B-pillar or under the seat. Unplug the sensor connector, remove mounting fasteners, replace the sensor, reconnect the harness and refit trims. After installation, reconnect the battery and perform an SRS diagnostic scan to clear fault codes and confirm system readiness.
Common Failure Modes
- Damage after a side collision — sensor can be physically impaired or shifted out of specification.
- Corrosion or water ingress causing intermittent or permanent electrical faults.
- Connector damage, wiring harness faults or poor grounding resulting in SRS warning lamps and stored fault codes.
Why It Matters
A faulty side impact sensor may prevent correct deployment of side airbags during an accident, compromising occupant protection. Replacing a defective sensor is essential to restore full SRS functionality and vehicle safety.
Technical Information
- Manufacturer: PSA (Peugeot Citroën)
- Model: Citroën Berlingo; Citroën C5; Citroën Xsara; Citroën Xsara Picasso; Peugeot 206; Peugeot Partner
- Product Codes: 9636982680, 8216H3
- Additional Numbers: 550903000 NFP
This is a used replacement part supplied as a direct-fit sensor. It has been inspected and is supplied ready for installation. Recommended for professional workshops and experienced DIY mechanics; after fitting, perform a diagnostic check to confirm the airbag system reports no faults.
