Description
Airbag Control Unit for PEUGEOT 308 T7. Fully functional.
Product Overview
This airbag control unit (SRS ECU) is designed for the Peugeot 308 (T7). It manages deployment of airbags and pretensioners, processes sensor inputs during an impact event and stores related fault and crash data. Ideal for professional workshops and experienced DIYers who search by part number: key references appear in the technical data below.
Function and Compatibility
The SRS (Supplemental Restraint System) control unit continuously monitors crash sensors, seat belt buckle sensors and airbag readiness. In the event of a collision it evaluates sensor signals and issues deployment commands to the appropriate restraint devices. This unit is intended for Peugeot 308 T7 applications; compatibility is commonly referenced by part numbers 619763800, 9674291480, 6546AP and related cross‑reference numbers listed below.
How To Replace
Replacing an airbag control unit is a safety‑critical operation. Recommended general steps:
- Park the vehicle on a level surface and isolate electrical power.
- Disconnect the negative battery terminal and wait at least 10–15 minutes to allow system capacitors to discharge.
- Remove interior trim panels and fasteners to access the SRS unit (usually located under the center console, under a seat or behind a trim panel depending on vehicle specification).
- Unplug connectors carefully, noting retention tabs; unbolt the unit and remove it.
- Install replacement unit, secure to original mounting points and reconnect connectors with correct engagement.
- Reconnect battery and use a compatible diagnostic tool (for Peugeot/PSA vehicles, DiagBox/Lexia or a capable SRS scanner) to read/clear fault codes and confirm SRS system status.
If the original unit was deployed in a collision it may contain crash data and logged faults; a replacement or proper initialization is required before the system will return to normal operation.
Technical Information
- Manufacturer: Peugeot (Stellantis)
- Model: Peugeot 308 (T7)
- Product Codes: 619763800, 9674291480, 6546AP
- Additional Numbers: 9803946780
Installation Recommendations
Work Methodically: Always follow the vehicle manufacturer’s repair procedures and torque values for fasteners. Before starting, isolate the battery and wait the recommended time to reduce the risk of accidental deployment. Protect connectors from contamination and ensure pins are undamaged. After fitting, perform a full SRS system scan and clear any stored faults with a suitable diagnostic tool. Inspect seat belt pretensioners, airbags and impact sensors for damage or corrosion while the system is open.
Most Common Failure Reasons
Airbag control units typically remain serviceable for the life of the vehicle unless affected by one of the following:
- Collision Impact: Deployment or internal damage after an accident is the most frequent cause of replacement.
- Water Ingress/Corrosion: Moisture or flooding can corrode connectors or internal circuits, causing faults or loss of communication.
- Electrical Damage: Short circuits, improper jump‑starting or voltage spikes can damage internal electronics.
- Connector/Socket Damage: Mechanical damage or poor contacts create intermittent faults and warning lights.
Typical Symptoms: SRS warning lamp illuminated, stored crash or communication fault codes, or failure of the diagnostic tool to communicate with the module.
Notes For Professionals
This unit is presented as fully functional. For safe and correct commissioning after installation use a suitable PSA diagnostic solution to verify system integrity and clear faults. When in doubt, follow factory repair manuals and safety guidance for handling and disposal of airbag‑system components.
