Airbag control unit with part number 0008767V003

What is the function of the airbag control unit 0008767V003?

The airbag control unit 0008767V003, also known as the SRS control unit, is the central control module for the occupant protection system in the Smart Roadster C452. It processes data from the acceleration sensors in real time and determines, in the event of a crash, which restraint systems—such as airbags and seatbelt pretensioners—should be activated.

As a critical component, it coordinates the entire safety chain, from collision detection to activation of protective mechanisms. Therefore, flawless operation is essential for passenger safety.

The control unit continuously communicates with the sensors and performs self-tests to ensure the system’s operational readiness.

Why does the airbag control unit 0008767V003 fail?

The most common causes of failure for the control unit 0008767V003 are stored crash data following an accident, which can lock the device, as well as electronic malfunctions on the circuit board. External factors such as moisture ingress leading to water damage can also result in complete electronic failure.

After a collision, accident data is permanently stored in the control unit’s memory. These “crash data” prevent further operation of the unit, even if no visible damage is present.

Electronic malfunctions represent another frequent source of failure. Individual components on the circuit board may fail, causing internal errors or a complete loss of communication.

Water damage leads to corrosion on sensitive traces and components, often resulting in unpredictable malfunctions or short circuits within the control unit.

This control unit is also known by the alternative part number Q0008767V003, which is technically identical and shares the same failure causes.

How do you recognize a defect in the control unit 0008767V003?

A defect in the control unit 0008767V003 typically manifests as a permanently illuminated airbag warning light on the instrument cluster. Often, communication with the control unit via the diagnostic interface becomes impossible, or specific error codes such as “Internal Error” or “Crash Data Stored” are read out.

The most noticeable sign is the active SRS warning light that fails to turn off after the engine starts, indicating a critical fault in the restraint system.

Another clear symptom occurs when the workshop can no longer access the control unit using a diagnostic tool. The unit does not respond to requests, preventing accurate fault analysis.

In some cases, communication remains possible, but the fault memory displays an unerasable entry such as “Control Unit Defective” or “Internal Error,” suggesting hardware damage or a data‑related lockout.

In which Smart models is the control unit 0008767V003 installed?

The airbag control unit with part number 0008767V003 is specifically designed for various variants of the Smart Roadster from the C452 series. At Airbag24, this control unit is professionally repaired for all compatible models to restore full functionality of the safety system.

At Airbag24, we repair both the part number 0008767V003 and its mechanically identical counterpart Q0008767V003 for the following vehicles:

Smart: Roadster C452 (model years 2003–2005), Roadster Base, Roadster Brabus, Roadster Coupé.

How is the control unit 0008767V003 professionally repaired?

The repair of the control unit 0008767V003 at Airbag24 involves a detailed analysis of stored faults and crash data. Subsequently, electronic sources of error on the circuit board are eliminated, and accident data is securely erased. A final functional test ensures that the unit operates like new again.

Upon submission to Airbag24, the control unit is analyzed by technicians with up to 20 years of experience. They examine the stored data directly on the circuit board to pinpoint the exact cause of the fault—whether it’s an internal malfunction or a lock caused by crash data.

In the next step, the accident data is removed from the control unit’s memory, even if communication via the OBD2 interface has already been lost. At the same time, defective electronic components are identified and expertly replaced.

After eliminating all sources of error, the repaired control unit undergoes a comprehensive functional test on a test bench. This ensures that all functions have been restored and that the unit complies with the manufacturer’s specifications. Each repair comes with 2 years' statutory liability for defects.