Description
Left Seat Airbag – Driver’s Seat for Citroën Xantia and Peugeot 406
This left seat (driver’s) airbag is designed for original fitment in Citroën Xantia and Peugeot 406 vehicles. Ideal for professional workshops and experienced DIY mechanics, the unit restores occupant protection after deployment or damage. Commonly searched by part numbers 9450631280, 9647806880 and 8216T8, this module fits the factory seat assembly and integrates with the vehicle SRS circuits.
Overview and Function
The seat-mounted airbag is a passive restraint component integrated into the left (driver’s) seat. Its purpose is to reduce injury to the pelvis, abdomen and chest in certain side-impact scenarios by deploying between the occupant and the vehicle structure. The assembly includes the airbag cushion, inflator (gas generator) and electrical squib connectors that link to the vehicle’s Supplemental Restraint System (SRS).
Who Should Fit This Part
Recommended for professional auto technicians and competent DIYers familiar with SRS systems. Installation requires safe handling of pyrotechnic components and post‑installation SRS diagnostics to clear fault codes and verify system status.
Installation Recommendations
- Disconnect the negative battery terminal and wait at least 10 minutes to allow capacitors in the SRS to discharge before starting work.
- Follow manufacturer procedures when removing seat trim and seat from the vehicle to avoid damaging seat covers, wiring harnesses and occupancy sensors.
- Handle the airbag module with care: keep the front (inflator) facing away from you and store it with the cover upward until fitting.
- Ensure connectors are clean, free of corrosion and fully engaged; use only OEM‑spec connectors or approved replacements.
- Tighten seat and airbag fasteners to the original torque values specified by the vehicle manufacturer.
- After installation, perform an SRS system scan with a diagnostic tool to confirm no fault codes remain and that the airbag circuit is intact; clear codes only after the system checks OK.
Most Common Failure Causes
Seat airbags typically fail or become unavailable due to: deployment in a collision, physical damage to the seat or module (e.g., from impact or improper removal), corrosion or breakage of wiring and connectors under the seat, water ingress from leaks, and damage during non‑professional repairs. Faulty occupant detection sensors integrated into seat assemblies can also trigger SRS faults that appear related to the airbag.
How Replacement Is Performed
Typical replacement steps: safely isolate the battery, remove seat upholstery or covers as required, unbolt and remove the seat if necessary, disconnect the airbag electrical connector(s), remove the defective airbag module from the seat frame and install the replacement in the correct orientation. Reconnect connectors, refit the seat and trim, reconnect the battery, then run a full SRS diagnostic and reset procedure. If an SRS warning lamp remains lit, further diagnosis is required to locate wiring or sensor faults.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën Xantia; Peugeot 406
- Product Codes: 9450631280, 9647806880
- Other Numbers: 8216T8
Why Choose This Unit
Fitting the correct seat airbag restores the original protection level designed for these models. Using the right part number ensures proper physical fitment and electrical compatibility with the vehicle’s SRS wiring and crash logic. For workshops that frequently service Citroën and Peugeot vehicles, stocking commonly used part numbers (9450631280, 9647806880, 8216T8) speeds repairs and reduces vehicle downtime.
Please follow safety best practices when working with SRS components. Incorrect handling or installation can prevent proper airbag deployment in a crash and compromise occupant safety.
