Description
Left seat airbag – Driver’s seat for Citroën Xantia and Peugeot 406 vehicles.
This left seat (driver’s) side airbag is designed for Citroën Xantia and Peugeot 406 models and is commonly searched by OEM part numbers. It provides lateral occupant protection in side-impact events and is intended to work together with the vehicle’s SRS (Supplemental Restraint System). The part is suitable for professional workshops and experienced DIY mechanics who understand airbag safety procedures and vehicle electronics.
Key Features & Benefits
– Direct replacement for original equipment part numbers, improving the chance of a correct fit and immediate recognition in parts searches.
– Designed to restore side-impact protection for the driver seat area when installed correctly.
– Useful for restoring airbag functionality after deployment or when the original module shows SRS faults related to the seat airbag circuit.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën Xantia; Peugeot 406
- Product Codes: 9647806880; 9450631280; 8216T8
- Additional Numbers: 8216T8; NFP (reference listed on supplier data)
Function
The seat side airbag inflates in the event of a qualifying side impact to reduce lateral forces on the occupant’s thorax and pelvis. It works together with other SRS components (sensors, crash data module, seat belt pretensioners) to improve occupant protection. Proper electrical connection to the seat wiring harness and correct pairing with the vehicle’s SRS system are required for full functionality.
Common Causes Of Failure
- Previous Deployment: Once deployed in a collision the airbag module must be replaced.
- Connector Or Wiring Damage: Corrosion, broken wires under the seat (from seat movement), or damaged airbag connectors can cause open circuits or short circuits, triggering SRS faults.
- Water Or Moisture Ingress: Spills or moisture reaching the seat electronics can corrode contacts and cause malfunction.
- Faulty Seat Occupancy/Detection Modules Or Seat Electronics: Electrical faults upstream can prevent correct airbag arming or signal processing.
Replacement And Installation
Replacing a seat airbag requires care and respect for SRS safety rules. Typical replacement steps are:
- Park vehicle on a flat surface, set parking brake and disable all power sources.
- Disconnect the negative battery terminal and wait at least 10 minutes to allow SRS capacitors to discharge.
- Move the seat to access fixings and connectors — many connectors are located under the seat or beneath trim covers.
- Remove the seat trim/bolts as required to access the airbag module; avoid folding or cutting the airbag cover.
- Unplug the airbag connector using the correct release tool; replace the module and reconnect securely, ensuring connectors clip fully home.
- Reinstall the seat and trims to the manufacturer torque settings, reconnect the battery and clear SRS fault codes with a suitable diagnostic tool if necessary.
Installation Recommendation
Installation Should Be Performed By A Qualified Technician Or An Experienced DIYer Familiar With SRS Systems. Always Disconnect The Battery And Wait A Minimum Of 10 Minutes Before Working On The Airbag Circuit. Use Approved Tools And Follow Manufacturer Procedure To Avoid Accidental Deployment Or Damage. After Installation, Verify Proper System Operation And Clear Any SRS Fault Codes Using An SRS-Capable Diagnostic Tool.
Why This Part Is Searched By Part Number
Seat airbags are frequently referenced by OEM part numbers when sourcing replacements because fitment and connector compatibility are critical. The numbers included in this listing (9647806880, 9450631280, 8216T8) help technicians and parts buyers quickly confirm compatibility with Citroën Xantia and Peugeot 406 vehicles.
Lifespan & Notes
Airbags Do Not Have A Fixed Service Interval; They Should Be Replaced After Deployment Or If Physically Damaged Or Electrically Faulty. Exposure To Moisture Or Repeated Seat Movement Can Accelerate Connector Wear. Always Inspect Wiring And Connectors When Replacing A Seat Airbag.
Compatibility / Fitment
Designed For Use In Citroën Xantia And Peugeot 406 Models Indicated By The OEM Part Numbers Listed Above. Verify Fitment By Matching The Part Number To Your Vehicle’s Original Part Number Before Installation.
