Airbag control unit with part number 619763800

What is the function of Airbag Control Unit 619763800?

The airbag control unit with part number 619763800 serves as the central control module for the passive safety system in various Peugeot 308 models. It processes signals from impact sensors to precisely deploy airbags and tighten seat belts in the event of a crash. Alternative OEM numbers for this control unit include 9674291480, 9665100080, and 9673383480.

As an Airbag ECU (Electronic Control Unit), it acts as the brain of the entire restraint system, continuously monitoring all connected components such as crash sensors, airbag modules, seat belt pretensioners, and seat occupancy mats.

Under normal operating conditions, the control unit communicates with other vehicle systems via the CAN bus and reports its status. However, in case of a malfunction or after an accident, this communication is often disrupted, compromising vehicle safety.

Why does Airbag Control Unit 619763800 fail?

The most common cause of failure for control unit 619763800 is an internal hardware defect that results in complete loss of communication with diagnostic tools. Another major reason is the permanent storage of crash data following an accident, which can lock the unit. External factors such as voltage surges, moisture, or high temperatures can also damage components.

A key issue is the loss of communication capability. Workshop testers can no longer access the control unit to read or clear fault codes, indicating a severe internal electronic failure rather than a simple software glitch.

After an accident—even one involving low impact energy—the unit permanently stores crash data in its memory. This lockout is a safety feature and can only be resolved through specialized repair, where the data is erased at the chip level.

Physical damage to internal components like microcontrollers or capacitors is also prevalent. Causes often include overvoltage in the vehicle’s electrical system, moisture ingress, or prolonged thermal stress. Previous improper repair attempts may also lead to secondary damage.

How do you recognize a fault in Control Unit 619763800?

A fault in Control Unit 619763800 primarily manifests as the airbag warning light constantly illuminated on the instrument cluster. Often, it becomes impossible to access the control unit using diagnostic equipment. Typical error codes such as 65535 (control unit defective) or internal CAN errors confirm the failure.

The most obvious sign is the airbag warning light, which either stays on continuously or flashes intermittently, indicating that the restraint system is non-functional and would not deploy in the event of a crash.

Another clear symptom is the control unit’s inability to respond to diagnostic requests. When a workshop attempts to read the fault memory, connection to the module is denied—this communication failure is a hallmark of hardware damage.

In some cases, other electronic systems may also be affected, such as a malfunctioning clock display or complete failure when the vehicle interior heats up. Stored error codes like 65535, 93F9, or general CAN-bus errors directly point to an internal fault within the control unit.

In which vehicles is Control Unit 619763800 installed?

The Airbag Control Unit 619763800, along with its compatible variants (including 9674291480, 9665100080, 610714900, 9673383480, and 619906500), is predominantly used in the Peugeot 308 series. Specifically, this includes the first- and third-generation Peugeot 308 SW models, as well as second-generation variants.

At Airbag24, we regularly repair this control unit for the following Peugeot models and series:

Peugeot 308 SW I (model years 2007–2011) and the facelifted version (2011–2015).

Peugeot 308 SW III (model years 2021–2025) and the upcoming facelift model (from 2025 onward).

According to technical specifications, compatibility also extends to the entire Peugeot 308 II series (2013–2021), including all body styles such as hatchback and station wagon (SW).

How is Control Unit 619763800 professionally repaired?

At Airbag24, Control Unit 619763800 undergoes professional component-level refurbishment. This process includes a detailed diagnosis, replacement of faulty electronic components, erasure of crash data to restore factory settings, and a final functional test to ensure full communication capability.

Upon receipt of the control unit, our technicians conduct a comprehensive analysis to pinpoint the exact cause of the fault, identifying defective parts such as capacitors or microcontrollers.

In the next step, the faulty components are replaced. If crash data is stored, it is erased at the chip level, restoring the control unit to full functionality and diagnostic readiness. This process returns the device to its original factory condition.

Finally, the repaired control unit is calibrated and tested on a test bench. This ensures that communication with the vehicle functions flawlessly again and that all restraint system functions are properly activated. We provide 2 years' statutory liability for defects on every repair.

Is Repairing 619763800 Worth It?

Repairing airbag control unit 619763800 is the most economical and sustainable solution. You save 80 to 90 percent compared to a new part, which often costs between 750 and 800 euros. The repaired unit performs just like a new one and is ready for immediate use.

The biggest advantage is the significant cost savings. Instead of purchasing an expensive new part from the manufacturer, you receive a fully functional unit at a fraction of the price through repair.

A repaired control unit retains its original vehicle coding. As a result, after installation it is operational right away, without requiring time-consuming reprogramming at the workshop.

Repairing also offers an environmentally friendly alternative, as valuable electronic components are reused. With 2 years' statutory liability for defects on the work performed, you take no risks.