Description
Airbag control unit for Citroën C8 and Peugeot 807. Fully functional.
This airbag control unit (SRS control module) is designed for Citroën C8 and Peugeot 807 vehicles and is a direct-replacement electronic unit often sought under original product numbers. The module monitors crash sensors, manages airbag deployment and seatbelt pretensioners, stores fault codes and communicates with the vehicle safety systems to ensure occupant protection in the event of a collision. Ideal for professional workshops and experienced DIY mechanics who maintain or repair Stellantis MPV models.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C8, Peugeot 807
- Product Codes: 1400612380, 6546H0
- Additional Numbers: 6546H1
Function And Compatibility
The unit functions as the vehicle’s SRS (Supplemental Restraint System) brain. It continuously evaluates inputs from crash sensors and seatbelt sensors and triggers airbags and pretensioners when required. This part is commonly searched and ordered by its product codes, so include these numbers when looking up compatibility for Citroën C8 and Peugeot 807 models.
How Replacement Is Performed
Replacement should be executed methodically: disconnect the vehicle battery and wait at least 10 minutes to allow system capacitors to discharge; remove the necessary interior trim to access the SRS module; unbolt the unit and carefully disconnect the wiring connectors; fit the replacement unit, secure it with original mounting hardware and reconnect the wiring. After installation, use an SRS diagnostic tool to read and clear stored fault codes and confirm that the airbag warning lamp behaves correctly.
Installation Recommendations
- Always disconnect the negative battery terminal and wait a minimum of 10 minutes before handling SRS components.
- Use proper SRS-safe tools and avoid static discharge; handle connectors carefully to prevent bent pins or corrosion damage.
- Check connector pins and wiring for corrosion or damage and clean with appropriate contact cleaner if required.
- After fitting, perform a full SRS system scan with a dedicated diagnostic tool to ensure no active faults remain and to confirm readiness of the restraint system.
- Be aware that some modules may require coding or initialization with dealer-level or advanced diagnostic equipment—plan accordingly.
Most Common Failure Causes
Airbag control units typically fail due to events that affect electronics or compromise connectors: a prior collision that has triggered or damaged the module, water ingress and resulting corrosion, electrical surges during jump-starting or faulty battery connections, damaged or corroded wiring connectors, and occasional internal electronic faults. Visible signs of trouble include a persistent airbag warning light, storage of crash-related fault codes, or intermittent communication errors on an SRS scan.
When ordering or replacing this unit, reference the product numbers 1400612380, 6546H0 and 6546H1 to increase the chance of finding the correct part. This unit is suited for professional garages and competent DIY technicians experienced with SRS systems.
