Airbag control unit with part number 25970290

What does the airbag control unit 25970290 do?

The airbag control unit 25970290 is the central control unit of the restraint system for Chevrolet. It evaluates the signals from the crash sensors and decides in an accident, within milliseconds, which airbags and seatbelt pretensioners fire. After an accident, it stores crash data and locks itself.

The system constantly monitors itself. If it detects a fault, it reports it via the airbag warning light in the instrument cluster.

Why does the control unit 25970290 fail?

Stored crash data after an accident is the most common cause, even if no airbag has deployed; a normal diagnostic tool cannot erase it. Further causes include aged components, cold solder joints, moisture and corrosion on plug connectors, and voltage spikes from a weak battery or a jump start. Airbag24 erases the crash data during the repair.

Every fault search on this control unit is therefore worth a look at the crash data.

The other causes concern the electronics themselves. Components age, solder joints can go cold, and moisture attacks plug connectors.

How can you tell that the 25970290 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, an error message appears on the display, the diagnostic tool cannot reach the control unit, or the fault memory cannot be cleared. Airbags and seatbelt pretensioners may then not be able to deploy in an emergency.

The warning light shows the defect as soon as the system detects it. That is why it is the most important warning sign for you to watch.

If the light comes on, have the fault memory read out promptly. Then it becomes clear which part of the system is affected.

Which vehicles is the 25970290 fitted in?

The airbag control unit 25970290 is fitted in these vehicles: Chevrolet Cobalt 1st generation (2004-2010). What counts is the control unit with exactly this number, not a device that merely looks similar.

The following list shows the vehicles in which this control unit is installed:

• Chevrolet Cobalt 1st generation (2004-2010)

Compare the part number on the label of the removed unit with this page. After that you only know that the unit fits. Whether the control unit is defective, or whether a plug or a cable is the cause, is shown only by the fault memory read out beforehand.

For the same vehicles, we also repair control units with the part numbers 15249432, 22729009, 22729011.

How does the repair of the 25970290 work?

First have the fault memory read out and enclose the log, then disconnect the battery and only then remove the control unit. Next, create a repair order online and send the unit in, packed stably. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 checks the unit on the test bench, repairs defective components, erases stored crash data and carries out a function test. Afterwards, your own repaired unit is returned to you.

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 25970290 get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge; after the repair, Airbag24 sends it back via UPS. Enclose the printed repair order and pack the control unit shockproof.

A sturdy box with enough filling material prevents damage to the housing during transport.