Airbag control unit with part number 9673578380

What is the function of the airbag control unit 9673578380?

The airbag control unit with part number 9673578380, an OEM component from Peugeot/Valeo, serves as the central control unit for the passive safety system in the Peugeot 308 CC. It processes data from crash sensors and determines, in the event of a collision, whether and which restraint systems—such as airbags and seatbelt pretensioners—should be deployed.

As the “brain” of the restraint system, this control unit continuously monitors and evaluates signals from acceleration and pressure sensors distributed throughout the vehicle. If it detects a collision exceeding predefined thresholds, it sends ignition pulses to the relevant components within milliseconds.

This includes not only front and side airbags but also specialized systems like the knee airbag or the passenger-side airbag. At the same time, it activates seatbelt pretensioners to position occupants optimally in their seats, thereby minimizing the risk of injury. Proper functionality is therefore essential for vehicle safety.

Why does the control unit 9673578380 fail?

The most common failures of the control unit 9673578380 stem from stored crash data after an accident, which can prevent further operation. Other causes include internal component defects due to aging or moisture ingress. Often, individual components such as sensors or capacitors on the circuit board are affected, leading to failure.

After an airbag deployment, the unit permanently stores the crash event data. This internal lock is intentionally designed by the manufacturer to prevent reuse until the data has been professionally reset. Simply clearing the fault memory using a diagnostic tool is not sufficient in such cases.

In addition to accidents, everyday stresses—such as vibrations or thermal cycling over time—can lead to material fatigue on the circuit board. Moisture, for example from a leak in the vehicle, may also cause short circuits or corrosion on sensitive electronic components.

The equivalent part numbers 624926000 and 9652712380 typically exhibit the same failure patterns and technical weaknesses.

How do you recognize a defect in the 9673578380?

A defective 9673578380 airbag control unit usually manifests as a permanently illuminated airbag warning light on the instrument cluster. Additionally, access to the control unit via a diagnostic tool often becomes impossible (no communication). After a crash, the warning light remains active because the stored crash data cannot be erased.

The most noticeable sign is the airbag warning lamp, which illuminates immediately upon turning on the ignition and does not turn off. This indicates a serious system error that requires immediate inspection.

Another clear symptom is the lack of communication capability. When a workshop attempts to read the fault memory, the diagnostic tool receives no response from the control unit, making it appear as if the unit were not installed in the vehicle at all.

In workshop diagnostics, internal error codes (e.g., 65535 or CAN bus errors) may also be displayed, directly pointing to an irreparable internal defect in the control unit itself and necessitating replacement or repair.

In which vehicles is the control unit 9673578380 installed?

The airbag control unit 9673578380, along with its equivalent numbers 624926000 and 9652712380, is primarily installed in the first-generation Peugeot 308 CC. At Airbag24, we repair this control unit for all variants of this model series, covering both pre-facelift and facelift versions.

Specifically, this component can be found in the following models:

Peugeot: 308 CC I (model years 2007–2011) as well as the facelift model (model years 2011–2015)

What are the benefits of repair?

Repairing the airbag control unit 9673578380 is an economically and technically sensible alternative to costly new purchases. Compared to a brand-new unit, repairs significantly reduce expenses. Moreover, there’s no need for time-consuming re-coding of the vehicle, since the original, repaired control unit can simply be reinstalled.

A new unit often comes with high costs, whereas a repair can save up to 70%. As the original device is refurbished, all vehicle-specific coding and data remain intact. After repair, the control unit can be directly reinstalled (plug-and-play), eliminating the need for expensive reprogramming at an authorized service center.

Additionally, repair offers a sustainable solution that helps avoid electronic waste. Each completed repair is backed by a 12-month warranty, underscoring the quality and durability of the restoration process.

How is control unit 9673578380 professionally repaired?

The professional repair of control unit 9673578380 at Airbag24 includes precise diagnostics, clearing of persistent crash data, and replacement of defective electronic components. Following restoration, the unit undergoes a comprehensive functional test to ensure proper communication and operation.

After being sent to Airbag24, the control unit follows a standardized process. First, an incoming inspection is performed, during which the fault memory is read out and the nature of the fault is verified. This ensures that the defect lies unequivocally within the control unit itself.

This is followed by the actual repair. Technicians erase the stored crash data and replace all defective or worn-out electronic components on the circuit board with new, high-quality parts, employing specialized soldering and measurement techniques.

Finally, the repaired control unit is tested on a simulation test bench. This test replicates vehicle operating conditions and confirms that all functions—including CAN-bus communication—are fully restored. You receive a 12-month warranty on the repair.

What shipping options are available at Airbag24?

For repairing your control unit, Airbag24 offers flexible shipping options. You can either send the package yourself free of charge or arrange a convenient UPS pickup at your preferred location. For return shipping, you have access to free UPS standard delivery as well as faster express and cash-on-delivery options.

For outbound shipping, you can choose between free self‑delivery or a convenient UPS pickup directly at your home or workshop.

Once the repair is complete, the control unit is securely packaged and returned to you. By default, we use free UPS standard shipping. If you prefer faster delivery or payment upon receipt, you can optionally select UPS express shipping or the corresponding cash-on-delivery services. Personal collection on-site is also available.