Airbag control unit with part number 96435584

What is the function of the airbag control unit 96435584?

The airbag control unit with part number 96435584 is the central control module of the passive safety system (SRS) in the Daewoo Tosca V250. Its primary task is to process sensor data so that, in the event of a crash, the airbags and seatbelt pretensioners are deployed precisely and at the right moment to protect the occupants.

This assembly, also known as the SRS control unit, continuously monitors all components connected to the restraint system. These include the crash sensors located at the front and sides of the vehicle, the seatbelt pretensioners, the seat occupancy mats, and all airbag modules. Through constant self-tests, the control unit ensures the proper functioning of the entire system.

Under normal operating conditions, it communicates with other control units in the vehicle and indicates its status via the SRS warning light on the instrument panel. After a crash, it stores relevant crash data and locks the system to prevent unintended re‑deployment.

Why does the airbag control unit 96435584 fail?

The most common cause of failure for control unit 96435584 is stored crash data following an accident, which blocks the system. Another major cause is internal electronic defects, such as faulty memory chips (EEPROM/Flash) or damaged driver ICs for the airbag ignition circuits.

After an impact—even minor collisions like hitting a curb—irreversible crash data is recorded in the control unit’s memory. This is a safety feature designed to prevent further use of the vehicle without verifying the SRS system. The control unit then becomes internally locked and must be professionally reset.

Electronic components on the circuit board can also fail. These include the memory chips that store the operating software and configuration data, as well as the power supply inside the device or the output stages (driver ICs) that deliver the ignition current to the pyrotechnic components. A defect here often results in complete loss of communication.

In some cases, the root cause lies not in the control unit itself but in peripheral components. Damaged wiring, corroded connectors, or faulty sensors can produce symptoms that mistakenly suggest a defective control unit. Therefore, professional diagnostics are essential.

How do you recognize a fault in control unit 96435584?

A malfunction of the airbag control unit 96435584 primarily manifests as the airbag warning light (SRS lamp) remaining constantly illuminated on the dashboard. Additionally, the control unit may become unreachable via OBD diagnostics or store a specific error code such as “Internal Error.”

The clearest indication is the persistently lit SRS warning light. Unlike usual, it does not turn off after starting the vehicle, signaling a serious, stored fault within the system.

Another clear symptom is the lack of communication. When a specialized workshop attempts to read the airbag system’s fault memory using a diagnostic tool, no response is received from the control unit. It effectively ceases to exist for the vehicle’s onboard network.

If an error code such as “Internal Error / Control Unit Fault” is detected, this directly points to an internal electronic damage on the device’s circuit board. Depending on the vehicle model, text messages like “Airbag / Seatbelt Pretensioner Fault” may also appear on the display.

In which vehicles is control unit 96435584 installed?

The airbag control unit with part number 96435584 is specifically designed for models of the Daewoo brand. At Airbag24, we expertly repair this control unit for the Daewoo Tosca V250 series, including the facelift model, restoring full functionality.

Our technical expertise covers repairing this module for the following vehicles:

Daewoo: Tosca V250 (model years 2006–2010), Tosca V250 Facelift (model years 2010–2014)

How does the repair of control unit 96435584 proceed?

The repair process at Airbag24 begins with a professional diagnosis performed on the vehicle, followed by removal and shipment of the control unit. After a detailed analysis, either the crash memory is reset or electronic repairs are carried out. Final functional tests ensure quality, backed by 2 years' statutory liability for defects.

First, a specialist workshop must confirm that the fault truly originates in the control unit. To do this, the fault memory is read and the wiring is inspected. Subsequently, with the battery disconnected, the control unit is carefully removed, typically near the center console area.

After you send the unit to Airbag24, our technicians perform an initial inspection. Depending on the fault pattern, we carry out the appropriate repair: For stored crash data, we read out the memory contents (EEPROM/Flash) and restore them to factory settings. In case of an internal defect, faulty components such as driver ICs or voltage converters on the circuit board are identified and replaced with original‑equivalent or OE‑equivalent parts.

Following each repair, a comprehensive functional test is conducted on a specialized test bench. Here, all ignition circuits and communication interfaces are simulated to ensure flawless operation. Only after this do we release the device for return shipment. We provide 2 years' statutory liability for defects on all repairs performed.