Description
Side Impact Sensor for Citroën and Peugeot Vehicles
This genuine-style side impact sensor is designed for Citroën and Peugeot vehicles and is commonly searched by its reference numbers 9665103780, 610797600 and 8216VL. Ideal for professional workshops and skilled DIY mechanics, the sensor monitors lateral impacts and provides a rapid signal to the airbag control system and seatbelt pretensioners to ensure timely deployment in a side collision. If you are searching by part number, this listing helps you quickly find the correct replacement for affected Stellantis models such as the Citroën C4 Picasso and other compatible Citroën/Peugeot vehicles.
Technical Information
- Manufacturer: Stellantis / Citroën / Peugeot
- Model: Citroën C4 Picasso (and various Citroën & Peugeot models)
- Product Codes: 9665103780, 610797600, 8216VL
- Additional Numbers: NFP
Function
The side impact sensor detects lateral acceleration produced during a side collision and sends an immediate electrical signal to the airbag control unit. The control unit evaluates the input from side sensors and initiates deployment of side airbags and activation of seatbelt pretensioners when thresholds are exceeded. Proper operation is critical for occupant protection in side-impact events.
Typical Location
Depending on the specific vehicle model, side impact sensors are typically mounted in the B-pillar, door frame, or under the seat base. Exact mounting location varies by model and year, so identify the original sensor position before removal.
Replacement Procedure
- Always disconnect the battery before beginning work to prevent accidental airbag deployment.
- Remove interior trim panels to access the sensor (B-pillar trim, door sill covers or seat covers as applicable).
- Unplug the electrical connector and unfasten the sensor mounting bolts.
- Fit the new sensor in the correct orientation, secure the fasteners, and reconnect the electrical connector.
- Reconnect the battery and use a suitable diagnostic tool to read and clear SRS/airbag fault codes and verify system status.
Recommended Installation
Due to the safety-critical nature of airbag systems, installation by a qualified technician is recommended. Use OEM fasteners and follow manufacturer torque and routing specifications where available. After replacement, verify system readiness with an appropriate diagnostic scanner and ensure no residual fault codes remain.
Why The Part Most Often Fails
- Direct damage from collisions—sensors can be physically deformed or electrically damaged during an impact.
- Moisture ingress and corrosion at the connector or sensor housing, especially in older vehicles or where trim seals are compromised.
- Wiring harness damage from previous repairs, rodents or wear leading to intermittent or open circuits.
- Connector contamination or poor contact causing erroneous signals or loss of signal to the airbag control unit.
- Age-related electrical failures—while sensors can remain functional for many years, environmental exposure can degrade performance over time.
Replace the sensor immediately after a deployment or if diagnostic trouble codes indicate a malfunction. Using the correct reference number (9665103780 / 610797600 / 8216VL) ensures compatibility with the intended airbag control strategy and proper system response.
Buy now to restore correct side-impact detection and maintain the safety integrity of your Citroën or Peugeot vehicle.
