Airbag control unit with part number 25783915

What does the airbag control unit 25783915 do?

The airbag control unit 25783915 controls the restraint systems (SRS) for Chevrolet. It evaluates the crash sensors, decides in a crash within milliseconds whether airbags and seatbelt pretensioners are triggered, and monitors the system continuously. After an accident it stores crash data and locks itself.

It does not only work during a crash: the control unit checks the connected components constantly and records faults in the fault memory.

The unit reports a detected fault via the airbag warning light in the instrument cluster.

Why does the control unit 25783915 fail?

The most common cause is crash data from an accident; they remain in the unit even if no airbag was triggered, and an ordinary diagnostic tool does not erase them. Aged electronic components, cold solder joints, corrosion at plug connections and voltage spikes from the vehicle electrical system are also possible causes.

If you want to narrow down the cause, the fault memory helps. It gives hints, but does not answer every question.

A weak battery or a jump start can cause voltage spikes that stress the electronics.

How can you tell that the 25783915 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently and thus indicates the defect in the 25783915. An error message may also appear in the instrument cluster, the diagnostic tool may find no connection to the control unit, or the fault memory cannot be cleared.

In this state, airbags and seatbelt pretensioners may possibly not trigger in an accident, which is why an inspection is important.

The warning light is not a trivial matter, but the direct feedback from the system to the driver.

Which vehicles is the 25783915 fitted in?

The control unit 25783915 is fitted in these vehicles: Chevrolet Cobalt 1st generation (2004-2010).

The list below shows the vehicles that are stored for this part number.

• Chevrolet Cobalt 1st generation (2004-2010)

First compare the part number on the label of the removed unit with this page. This only shows that it is the right unit. Have the fault memory read out before removal, because 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 15249432, 22729009, 22729011.

How does the repair of the 25783915 work?

First have the fault memory read out and attach the log, then disconnect the battery and only afterwards remove the control unit 25783915. Then create a repair order online and send the well-packed unit in.

Airbag24 checks the unit on the test bench, replaces defective components, erases stored crash data and carries out a function test. Afterwards the unit returns to you.

Processing takes 3–4 working days at Airbag24 as a rule. 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 25783915 get to Airbag24?

You send the control unit 25783915 to Airbag24 as a parcel, or book a UPS collection for an extra charge. The return after the repair is likewise made by UPS.

You enclose the printed repair order with the parcel and pack the unit shock-proof.