Description
Airbag unit for Citroën C8 and Peugeot 807
Fully functional
This airbag control unit (SRS/Restraint Control Module) is suitable for Citroën C8 and Peugeot 807 models and is listed under part numbers 1400987180, 6546H0 and 6546H1. Engineered for professional workshops and experienced DIY mechanics, this unit replaces a faulty SRS brain to restore proper airbag system operation, clear crash flags and allow secure deployment in the event of an accident. Clear product codes in the description make it easy to find on search engines and in parts catalogs.
Technical Information
- Manufacturer: Stellantis
- Model: Citroën C8; Peugeot 807
- Product Codes: 1400987180, 6546H0, 6546H1
- Additional Numbers: 6546H0 / 6546H1 (cross-references)
Function And Role
The airbag control unit continuously monitors crash sensors, seatbelt pretensioners and passenger occupancy signals. In a collision, it evaluates sensor inputs and issues the deployment command to the airbags and pretensioners. It Also Stores Crash Data And Diagnostic Trouble Codes That Are Readable With A Diagnostic Tool, Which Helps Determine System Status After An Event.
Common Failure Causes
- Impact Or Previous Collision That Triggered Deployment Or Set Crash Flags.
- Electrical Issues: Short Circuits, Connector Corrosion Or Damaged Wiring Harnesses.
- Moisture Ingress Or Water Damage Leading To Internal Corrosion Or Electronic Faults.
- Aging Electronics: Faulty Components Or Loss Of Calibration Over Time.
- Improper Repairs Or Aftermarket Interference That Affect Signal Integrity.
Installation Recommendations
- Safety First: Disconnect The Negative Battery Terminal Before Any Work And Wait At Least 10 Minutes To Allow SRS Capacitors To Discharge.
- Handle With Care: Avoid Dropping The Unit Or Exposing It To Moisture. Do Not Open Or Attempt To Repair The Module Internally.
- Removal: Remove Required Trim Panels To Access The Unit, Unplug Electrical Connectors Using Proper Release Tools, Then Unbolt The Module From Its Mounting Points.
- Fitment: Install The Replacement Unit In The Correct Orientation, Secure Bolts To Original Positions And Reconnect All Plugs Ensuring Firm Contact.
- Diagnostics And Reset: After Installation Use A Qualified Diagnostic Tool To Read And Clear Fault Codes, Confirm Airbag System Integrity And Perform Any Required Calibration Or Relearning Procedures.
- Verification: Confirm That The Airbag Warning Light Behaves Normally (Illuminates On Key-On Self-Test Then Switches Off) Before Returning The Vehicle To Service.
This listing is optimized for technicians and car owners who search by part number (1400987180, 6546H0, 6546H1) or by model (Citroën C8, Peugeot 807). Replacing the airbag control unit with the correct code helps restore safety system functionality and ensures the restraint system operates as designed.
