Description
Autoliv Airbag Control Unit for Peugeot 407
This Autoliv airbag control unit is a direct-fit safety module designed for use in Peugeot 407 vehicles. It monitors crash sensors, decides when to deploy airbags and seatbelt pretensioners, and stores diagnostic fault codes that illuminate the SRS warning lamp. The unit is commonly referenced by part numbers 9655880880, 603554600, 6545HY and 6545HZ, so customers and workshops frequently search by these codes when sourcing a replacement.
Application And Compatibility
Compatible With: Peugeot 407 models. Check vehicle equipment level and connector layout when comparing part numbers. This module is intended as the airbag/SRS control unit for the Peugeot 407 family.
Technical Information
- Manufacturer: Autoliv
- Model: Peugeot 407
- Product Codes: 9655880880, 603554600
- Additional Numbers: 6545HY, 6545HZ
Function And Benefits
The airbag control unit continuously monitors inputs from accelerometers, impact sensors, belt buckle switches and other SRS components. On detecting a qualifying collision, it sends deployment signals to the relevant airbag and pretensioner circuits. A properly functioning module ensures timely and correct activation of restraint systems, contributes to passenger safety and provides fault data for diagnostics.
Typical Fault Symptoms
Common indicators that the control unit may be faulty include a persistent SRS/Airbag warning light on the dashboard, stored crash or communication fault codes, intermittent loss of communication with diagnostic tools, or airbags/pretensioners not deploying after a crash. After an impact where airbags have deployed, the module often records the event and normally requires replacement.
Installation Recommendations
Installation Should Be Performed By A Qualified Technician Or An Experienced DIY Mechanic Familiar With SRS Systems. Before Starting, Disconnect The Battery And Wait At Least 10–30 Minutes To Allow The SRS Capacitor To Discharge. Follow These Steps: carefully remove trim panels to access the module, disconnect connectors using retention clips (avoid pulling on wiring), install the replacement unit ensuring secure connector engagement and correct alignment, reassemble trims, reconnect the battery and perform a full SRS system scan with a diagnostic tool to clear any residual fault codes and verify proper operation. Use appropriate torque values for fasteners and observe electrostatic discharge precautions when handling the module.
Why This Part Fails Most Often
Failure Causes Include Water Ingress Or Corrosion Of Connectors, Electrical Surges Or Short Circuits (for example after incorrect jump-starting), Physical Damage From Previous Collisions, Or Internal Component Failure Due To Age Or Thermal Stress. In many cases the module is also replaced after airbag deployment, since deployed-event data is recorded and reset is not possible in-service.
Notes For Buyers
Customers Often Search Using Part Numbers 9655880880, 603554600, 6545HY And 6545HZ — Include These Codes When Comparing Listings To Ensure Correct Fitment. After replacement, always perform a diagnostic check to confirm the SRS lamp is extinguished and there are no stored errors.
