Airbag control unit with part number 24 417 008 DT

What is the function of the airbag control unit 24 417 008 DT?

The airbag control unit 24 417 008 DT is the central control module for the occupant restraint system (SRS) in models such as the Opel Combo. Manufactured by Temic, it processes data from the acceleration sensors to precisely deploy airbags and seatbelt pretensioners in the event of a crash, while also storing crash events in its internal memory.

As the brain of the restraint system, this module continuously monitors all connected components, including the airbag ignition circuits, seatbelt pretensioners, seatbelt buckle switches, and seat occupancy detection, ensuring appropriate deployment under various conditions.

A malfunction or failure of this control unit inevitably disables the entire airbag system. The result is a permanently illuminated airbag warning light, which poses a significant safety risk and leads to immediate failure during the main inspection (HU/TÜV).

Why does the airbag control unit 24 417 008 DT fail?

The most common cause of failure for the control unit 24 417 008 DT is stored crash data following an accident that cannot be erased using standard diagnostic tools. Other reasons include internal hardware defects in electronic components such as voltage regulators, memory chips, or the microcontroller itself.

After an airbag or seatbelt pretensioner deployment, the control unit writes a permanent crash record into its EEPROM or flash memory. This data entry locks the module and often triggers error code B1000, requiring replacement even though targeted repair through data reset is possible.

Electronic components on the circuit board can also fail. Faults in the power supply or the CAN transceiver render the control unit unresponsive. Cold solder joints on BGA or QFP packages—often caused by thermal stress or moisture—are another typical source of failure.

How do you recognize a defect in the control unit 24 417 008 DT?

The primary symptom of a defective control unit 24 417 008 DT is the permanently illuminated airbag warning light in the Opel Combo’s cockpit. Often, the control unit cannot be accessed with a diagnostic tool (no communication), or error code B1000 “control unit defective” appears.

A persistently active airbag warning light is the clearest indication. It signals that the entire restraint system is inoperative, leaving occupants without protection from airbags or seatbelt pretensioners in the event of a crash.

Another clear sign is the inability to perform diagnostics. When a workshop attempts to read the fault memory, no response is received from the SRS control unit, pointing to a severe internal hardware failure.

Following an accident, error codes indicating stored crash data can no longer be cleared. The system remains locked even after all external airbag components have been replaced.

In which vehicles is the control unit 24 417 008 DT installed?

The Temic airbag control unit with part number 24 417 008 DT is specifically designed for Opel vehicles. It is primarily used in the Opel Combo C and, in the aftermarket repair context, especially for the Opel Combo D series produced between 2011 and 2018.

At Airbag24, we repair this control unit for the following model:

Opel: Combo D (2011–2018)

How does the repair process work at Airbag24?

The repair process begins with diagnosis at your workshop and removal of the control unit. After sending it to Airbag24, a thorough analysis is performed at the electronic level. Repairs include selectively erasing crash data from the memory chip and replacing faulty components. A final test ensures full functionality.

Before removal, the fault memory should be read out and the report included with the package. This helps our technicians quickly narrow down the issue.

At Airbag24, the control unit is opened after an initial inspection, and the circuit board is analyzed. Depending on the nature of the fault, crash data is professionally reset in the EEPROM/flash memory, or defective components such as voltage regulators and communication ICs are replaced.

Following restoration, the module is tested on a specialized test bench to verify proper operation of all systems. We provide 2 years' statutory liability for defects on all repairs. After reinstallation in the vehicle, the fault memory must be cleared.