Airbag control unit with part number 24416703

What does the airbag control unit 24416703 do?

The airbag control unit 24416703 controls the restraint system (SRS) of Opel. It processes the signals from the crash sensors, determines within milliseconds in an impact which airbags and seatbelt pretensioners are triggered, and checks the system continuously.

The control unit is the central point of the system and reports faults via the airbag warning light in the instrument cluster. The manufacturer's number Continental 5WK42977 is additionally printed on the housing.

After an accident the control unit stores crash data and locks itself.

Why does the control unit 24416703 fail?

The most common cause at the 24416703 is crash data stored after an accident, even if no airbag has deployed; a standard diagnostic tool cannot erase it. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data consists of entries that are stored in the memory after an impact. They are only removed during the repair, because a commercially available readout device cannot clear them.

The other causes lie mainly in the electronics itself. Aged components, cold solder joints and moisture at the contacts impair signal transmission, and voltage spikes from a weak battery or a jump start additionally stress the circuit.

How can you tell that the 24416703 is defective?

The airbag warning light in the instrument cluster, lighting up permanently or intermittently, is the first sign of a defect in the 24416703. Error messages in the instrument cluster, a diagnostic tool without a connection to the control unit, and a fault memory that cannot be cleared are added to it.

These findings are clear enough that they should not be overlooked. In an emergency, airbags and seatbelt pretensioners may not deploy, so a check makes sense.

You should have the cause clarified promptly rather than ignoring the display for longer, because the warning concerns the entire restraint system.

Which vehicles is the 24416703 fitted in?

The control unit 24416703 is fitted in these vehicles: Opel Astra G (1998-2004); Opel Zafira A (1999-2005).

These vehicles are recorded in the Airbag24 assignment for this part number.

• Opel Astra G (1998-2004)
• Opel Zafira A (1999-2005)

Comparing the part number on the label of the removed unit with this page confirms that it is the right unit. Have the fault memory read out beforehand; only this log shows whether the control unit is defective or whether a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 09 229 303, 09 229 303 BG, 09174004UU, 13188856, 13261676, 24416703DL.

How does the repair of the 24416703 work?

Have the fault memory read out and enclose the log. Then disconnect the battery, and only after that remove the 24416703 and create a repair order online. Afterwards send in the well-packed unit. At Airbag24, processing usually takes 3–4 working days.

Airbag24 checks the control unit on the test bench, replaces defective components, erases the stored crash data and carries out a function test. Afterwards your own unit is sent back to you.

The 3–4 working days relate only to the checking, repairing and testing there, not to your steps or the shipping.

Our repairs come with 2 years' statutory liability for defects. The repaired control unit comes back with all vehicle data and is ready for use as soon as it is refitted — no coding or programming is required.

How does the control unit 24416703 get to Airbag24?

You send the control unit 24416703 to Airbag24 as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 sends it back to you by UPS.

The printed repair order goes in the parcel, and the unit must be packed shock-resistant.