Airbag control unit with part number 000-446-11-44

What is the function of Airbag Control Unit 000-446-11-44?

The airbag control unit with part number 000-446-11-44 is the central control module for the passive safety system in the Mercedes-Benz G-Class W461. It processes signals from crash sensors and is responsible for precisely and reliably deploying airbags and seatbelt pretensioners in the event of a collision.

As the “brain” of the restraint system, this component continuously monitors all connected sensors and actuators. If a fault occurs in the system, the control unit illuminates the airbag warning light on the instrument cluster to alert the driver.

Why does Airbag Control Unit 000-446-11-44 fail?

The most common causes of failure are internal electronic malfunctions and the storage of crash data after an accident. This stored data locks the control unit, preventing it from functioning further—even if there is no visible damage. Communication issues with diagnostic tools are also typical signs of a defect.

A frequent reason for repair is the persistent storage of crash data. Following a collision, the control unit is locked for safety reasons. This lock can only be lifted through specialized reprogramming.

Internal control unit faults are another widespread cause. These involve defects in electronic components on the circuit board, which can lead to malfunctions or complete device failure.

How do you recognize a defect in Control Unit 000-446-11-44?

The primary indicator of a defect is the airbag warning light that remains illuminated permanently or intermittently on the dashboard. Additional symptoms include error memory entries that cannot be cleared, as well as complete communication failure of the control unit during workshop diagnostics.

The activated airbag warning light is the clearest warning sign, indicating that the entire restraint system may be non-functional and could fail to deploy in the event of a crash.

In the workshop, the defect often manifests as stubborn error memory entries such as “Internal Control Unit Fault,” which persist even after multiple attempts to reset them—signaling a deep-seated issue within the device itself.

Another clear symptom is the error message “No Communication with Airbag Control Unit” when a diagnostic tool is connected, meaning the control unit is no longer accessible to external systems.

Additionally, specific failures—such as reported malfunctions of the passenger-side or seat-mounted airbags—may also stem from a defect in the central control unit.

In which vehicles is 000-446-11-44 installed?

The airbag control unit with part number 000-446-11-44 is specifically designed for the Mercedes-Benz G-Class of the W461 series. At Airbag24, we specialize in overhauling this control unit for this rugged off-road vehicle model, restoring its original functionality and safety.

At Airbag24, we repair part number 000-446-11-44 for the following model:

Mercedes-Benz: G-Class (W461 series, model years 1992–2001)

How does the repair process work at Airbag24?

Once the removed control unit arrives at Airbag24, a professional diagnosis is performed. The repair includes targeted reprogramming to eliminate faults and erase crash data. Final tests confirm full functionality, backed by 2 years' statutory liability for defects.

The process begins with removing the defective control unit from the vehicle—a task that can be carried out at any authorized workshop. The unit is then securely packaged and shipped to Airbag24.

Our technicians, with over 20 years of experience from more than 20,000 repairs, conduct a thorough analysis to pinpoint the exact source of the problem. The focus is on reprogramming and clearing internal errors to restore the original functionality.

After successful refurbishment, the control unit undergoes a final functional test. Only after passing this test is it approved for return shipment. Each repair comes with 2 years' statutory liability for defects.