Description
Passenger seat airbag for Citroën C4 II and DS4
High-quality passenger seat airbag designed for Citroën C4 II (B7) and DS4 models. This seat airbag module (OE references 9687158280 / 8217F8) restores occupant protection after a deployment or when the original module develops a fault. Built to meet the strict safety requirements of Stellantis vehicles, the unit is suitable for professional workshops and experienced DIY mechanics who follow proper safety procedures. Keywords: Citroën C4 II passenger seat airbag, DS4 seat airbag, 9687158280, 8217F8, seat airbag module.
Technical Information
- Manufacturer: Citroën (Stellantis)
- Model: Citroën C4 II (B7), DS4
- Product Codes: 9687158280, 8217F8
- Other Numbers: 8217F8, 9687158280
Function
The passenger seat airbag is a pyrotechnic restraint component mounted inside the front passenger seat. In the event of a qualifying frontal or offset impact, the inflator rapidly deploys the airbag cushion to reduce the risk of injury to the occupant by absorbing energy and limiting forward movement. The module works together with seatbelt pretensioners and the vehicle’s SRS control logic to provide coordinated occupant protection.
Replacement Procedure
Replacing a seat airbag requires care and adherence to safety rules. Typical replacement steps used by professionals:
- Park the vehicle on a level surface, engage the parking brake and remove the ignition key.
- Disconnect the negative battery terminal and wait at least 10 minutes to allow residual charge to dissipate.
- Move the seat to access mounting points; remove seat trim panels and upholstery as needed to expose the airbag module.
- Unplug the airbag electrical connector(s) and any seat harnesses, taking care not to damage locking tabs or wiring.
- Remove the retaining bolts securing the airbag module to the seat structure and fit the replacement unit.
- Refit connectors and trims, torque fasteners to manufacturer specifications and ensure all clips are seated correctly.
- Reconnect the battery and use an appropriate diagnostic tool to perform an SRS system check and clear any fault codes. Verify that the airbag warning lamp on the dash extinguishes after the check.
Installation Recommendations
- Always disconnect the battery before starting work and follow the vehicle manufacturer’s service procedures to avoid accidental deployment or damage.
- Handle the airbag module by its housing; do not apply pressure to the cushion or inflator element and keep the trim away from the deployment face.
- Do Not Use Power To Probe Airbag Connectors; use correct connectors and avoid short circuits.
- Ensure electrical connectors are clean and fully engaged; contaminated or loose connections can trigger SRS faults.
- Tighten mounting fasteners to the torque values specified by the manufacturer. If torque values are unknown, consult a workshop manual or service data resource.
- After fitment, perform a full SRS diagnostic cycle with a compatible tool to confirm system integrity and clear error codes.
- If you are not experienced with SRS components, have the replacement carried out or verified by a qualified technician to ensure occupant safety.
Most Common Failure Causes
- Previous Deployment: Airbag modules are single-use after activation and must be replaced following a crash.
- Connector Corrosion Or Damage: Moisture, spills, or physical damage to seat connectors can cause loss of communication and trigger SRS faults.
- Wiring Wear: Repeated seat movement, aftermarket seat heaters or modifications can chafe wires leading to intermittent faults or open circuits.
- Incorrect Repairs Or Improper Handling: Mishandling during repairs or using incompatible connectors can damage the inflator or trigger error codes.
- Electrical Faults In SRS System: Faults elsewhere in the restraint system (sensors, clock spring, control unit) may present as a seat airbag issue; proper diagnostics are required to identify the root cause.
Service Life And Notes
Seat airbag modules do not have a routine replacement interval; they must be replaced if deployed or when diagnostics indicate a fault. Always use parts that match the original OE numbers (9687158280 / 8217F8) for correct fit and function. Do not attempt to repair a deployed or damaged airbag module — replacement is the safe and approved course of action.
