Airbag control unit with part number 9675878080

What is the function of the airbag control unit 9675878080?

The control unit with part number 9675878080 is a central airbag control unit that serves as an OEM reference in Citroën and Peugeot vehicles. It acts as the brain of the passive safety system, continuously monitoring crash sensors and ensuring precise activation of airbags and seatbelt pretensioners in the event of an accident.

This component, also known as the BSM control unit (Boîtier de Servitude Moteur), collects and processes data from acceleration and pressure sensors throughout the vehicle. Based on this information, the unit decides within milliseconds whether and which restraint systems need to be activated to provide optimal protection for occupants.

In addition to its deployment function, the control unit logs system-relevant faults and permanently stores so‑called crash data after an accident. These data are crucial for fault analysis and vehicle safety.

Why does the control unit 9675878080 fail?

The most common cause of failure for the control unit 9675878080 is stored crash data following an accident. This data permanently locks the unit, causing the airbag warning light to remain illuminated. Other defects arise from internal electronic issues such as faulty SMD components, broken solder joints, or moisture damage.

After a collision—even minor ones—a data record is written to the control unit’s internal memory (EEPROM). This lock is intentionally designed by the manufacturer and cannot be cleared using conventional diagnostic tools. The system thus signals that a check of the safety components is required.

Besides crash‑data locking, hardware‑related defects are also a frequent source of failure. Aging can lead to cold solder joints or defective capacitors. External factors like voltage surges or ingress of moisture can likewise damage circuit traces or sensitive microcontrollers, disabling the control unit.

How do you recognize a defect in the control unit 9675878080?

A defect in the control unit 9675878080 primarily manifests as the SRS or airbag warning light remaining constantly illuminated on the instrument cluster. Often, the control unit can no longer be accessed via workshop diagnostic software, complicating fault analysis and indicating an internal issue.

The clearest symptom is the active airbag indicator light that fails to turn off after starting the engine. This is a clear signal from the vehicle that the passive safety system is not operational and may not deploy in the event of an accident.

Another critical sign is the lack of communication. When a workshop attempts to read the fault memory, the diagnostic tool receives no response from the airbag control unit. This communication breakdown often confirms a severe internal fault or a lock caused by crash data.

In which vehicles is the control unit 9675878080 installed?

The airbag control unit with part number 9675878080 is used specifically in models from Citroën and Peugeot. At Airbag24, we specialize in repairing this part number, particularly for the third‑generation Citroën Berlingo (K9), where this component is widely employed.

At Airbag24, we offer professional repair services for part number 9675878080 for the following model:

Citroën Berlingo III (K9), model years 2018–2024

The removal location for this model is often in the center console area, for example beneath the handbrake. A thorough verification of the part number on the removed unit is essential before shipping it for repair to ensure compatibility.

How is the repair of the control unit 9675878080 carried out?

At Airbag24, repairs begin with a comprehensive diagnosis, during which fault codes and crash data are read. This is followed by hardware restoration of defective components and secure deletion of crash data. A final communication test ensures full functionality. We provide a 12‑month warranty on every repair.

Upon receipt of the control unit at Airbag24, a detailed analysis is performed. Our technicians read the internal fault memory and any stored crash data to identify the exact cause of the malfunction. This step is critical for a lasting repair.

Subsequently, professional electronic refurbishment takes place. Defective SMD components such as capacitors or processors are replaced, broken circuit traces are repaired, and corrosion damage is addressed. Deletion of crash data is conducted in compliance with all technical and legal regulations and only with customer approval.

Finally, the repaired control unit undergoes an intensive functional test. We verify flawless communication with diagnostic tools and ensure that all internal fault codes have been cleared. You will receive a tested, fully functional component in return.

What shipping options are available?

You can send your defective control unit to Airbag24 free of charge or drop it off in person. Alternatively, we offer convenient UPS pickup from your preferred location. For the return shipment, you can choose between free UPS Standard shipping, faster UPS Express, or cash-on-delivery.

For sending your unit to us, you have several options. Ship the securely packaged control unit yourself, or use our UPS pickup service. Personal delivery to our facility is also possible.

After successful repair, the returned shipment will be handled according to your preferences. By default, we ship free of charge via UPS Standard. If you need faster delivery, UPS Express is available. Both options can also be combined with cash-on-delivery. Of course, you may also pick up the repaired unit in person at our premises.