Airbag control unit with part number 15821096

What does the airbag control unit 15821096 do?

The airbag control unit 15821096 is the control unit of the restraint system (SRS) for Chevrolet. It evaluates the crash sensors, decides within milliseconds in an accident whether the airbags and seatbelt pretensioners are triggered, and monitors the system continuously.

The device reports faults via the airbag warning light, and after an accident it stores crash data and locks itself.

Why does the control unit 15821096 fail?

Stored crash data is the most common cause, even if no airbag has deployed. Other possible causes are ageing electronic components, cold solder joints, moisture at plug connections and voltage spikes.

Crash data is created in the control unit after an accident, and a normal diagnostic tool cannot delete it. Airbag24 deletes it during the repair.

Ageing of components, cold solder joints and moisture at connectors can also cause problems. Voltage spikes, for example from a weak battery or a jump start, can cause problems too.

How can you tell that the 15821096 is defective?

If the airbag warning light in the instrument cluster stays on permanently or only intermittently, this indicates a defect. The instrument cluster may also show an error message, the diagnostic tool receives no connection to the control unit, and the fault memory cannot be cleared.

In that case the airbags and seatbelt pretensioners may not trigger in an emergency.

It is normal for the light to come on briefly when the ignition is switched on; if it stays on afterwards, there is a problem.

Which vehicles is the 15821096 fitted in?

These vehicles belong to part number 15821096. The control unit is fitted in these vehicles: Chevrolet Cobalt 1st generation (2004-2010).

The list shows the vehicles that are assigned to this part number.

• Chevrolet Cobalt 1st generation (2004-2010)

Comparing the part number on the label only shows whether the device fits. Whether the control unit itself is defective or a plug or cable is the cause can only be shown 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 15821096 work?

For safety reasons, first have the fault memory read out and enclose the log. Then disconnect the battery and only then remove the control unit; afterwards create a repair order online and send the device in well packed.

Airbag24 checks the device on the test bench, replaces defective components, deletes the stored crash data and carries out a function test. This normally takes 3–4 working days; afterwards your own device is returned.

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 15821096 get to Airbag24?

The route to Airbag24 is by parcel or by a UPS collection that you book for an extra charge. After the repair Airbag24 sends the device back to you by UPS.

Include the printed repair order with the parcel, and pack the control unit shockproof.