Airbag control unit with part number 96406171

What is the function of Airbag Control Unit 96406171?

The airbag control unit with part number 96406171 is the central control module for the occupant protection system, primarily used in Daewoo Kalos models. It processes signals from crash sensors to precisely deploy airbags and seatbelt pretensioners in the event of a collision, while also storing relevant event data such as crash information.

As an Airbag Control Unit (ECU), this device serves as the brain of the entire restraint system. It continuously monitors all connected components—including sensors, airbag modules, and seatbelt pretensioners—for proper functionality. The electronics, often supplied by Delphi, play a critical role in ensuring passive safety for vehicle occupants.

Technically, control unit 96406171 is compatible with several alternative original part numbers, which is important for identification and repair. These include part numbers 16020402, 16020402GD, 7088816 (for T250), 96430714, 7088878, 27120503, and 96866798 (for T200).

Why does control unit 96406171 fail?

The most common faults of control unit 96406171 are electronic in nature. First and foremost are stored, non-erasable crash data following a collision, which can lock the unit. Similarly, internal component failures, water damage, or communication issues can lead to system malfunctions.

A major cause requiring repair is the accumulation of crash data. After a collision, the control unit locks itself for safety reasons, preventing further operation—even if no airbags were deployed. This lock can only be released through specialized repair procedures.

In addition, internal board-level faults may occur. Defective electronic components such as capacitors or the microcontroller itself can result in total failure or malfunction. Water ingress due to leaks in the vehicle can also irreparably damage sensitive electronics.

In some cases, CAN-bus errors arise, blocking communication between the airbag control unit and other vehicle systems. This likewise triggers persistent error messages and renders the safety system inoperable.

How do you recognize a fault in control unit 96406171?

A fault in control unit 96406171 almost always manifests as a permanently illuminated airbag warning light on the instrument cluster. Additional signs include the inability to read diagnostic codes because the unit fails to communicate with diagnostic tools, or specific error messages indicating internal malfunctions.

The most obvious symptom is the persistently lit airbag warning light. It does not turn off after starting the vehicle, signaling that the restraint system is not operational and would not deploy in the event of a crash.

Another clear indication of a fault within the control unit itself is the lack of communication with diagnostic equipment. When a professional workshop attempts to read the fault memory, no response is received from the unit—pointing directly to a serious internal issue.

In workshop practice, it is often observed that the airbag light remains on, yet no concrete fault codes can be retrieved. This clearly indicates a defect within the control unit itself, rather than a problem with an external sensor or airbag module.

In which vehicles is part number 96406171 installed?

Airbag control unit 96406171 is primarily used in vehicles manufactured by Daewoo. Specifically, it is installed in the Daewoo Kalos T200 and T250 model series produced between 2002 and 2011. Since Chevrolet marketed the Kalos as a rebadged model, this unit can also be found in corresponding Chevrolet Kalos vehicles.

At Airbag24, we repair part number 96406171 and its variants for the following models:

Daewoo: Kalos T200 (2002–2011), Kalos T250 (2002–2011)

Chevrolet: Kalos (identical model variants)

How is control unit 96406171 professionally repaired?

Professional repair of control unit 96406171 at Airbag24 involves precise diagnostics to identify the root cause, expert erasure of stored crash data, and replacement of defective electronic components on the circuit board. Finally, the unit undergoes a comprehensive functional test.

After submission to Airbag24, repairs follow a standardized process. First, the control unit is scanned and analyzed to pinpoint the exact cause—whether it’s an internal fault or locked crash data.

Next, repairs proceed at the component level. Defective parts such as the microcontroller or capacitors are replaced with new, high-quality components. Stored crash data is then completely and securely erased from the memory chip, restoring full functionality to the unit.

After repair, the control unit is tested on a specialized test bench to simulate and verify the proper functioning of all systems. This process ensures that the device meets the manufacturer’s specifications. We provide 2 years' statutory liability for defects on all repairs.