Airbag control unit with part number 13504406

What does the airbag control unit 13504406 do?

The airbag control unit 13504406 controls the restraint system (SRS) of Chevrolet and is its central control unit. It continuously checks the sensor signals and decides in a crash, within fractions of a second, which airbags and seatbelt pretensioners are triggered.

If a fault occurs in the system, the airbag warning light in the instrument cluster lights up. This lets you recognise immediately that the restraint system is not in order.

After an accident the unit stores crash data and locks itself. It remains the link between the sensors and the triggers.

Why does the control unit 13504406 fail?

With the control unit 13504406, the most common cause is stored crash data, even without an airbag having triggered. These cannot be erased with a standard diagnostic tool; Airbag24 erases them during the repair. Other causes include aged components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Stored crash data shows that the unit has registered an incident. An airbag does not have to have deployed for this.

The remaining causes mainly concern the electronics themselves. Ageing and cold solder joints take effect over time, and moisture can disturb contacts.

Voltage spikes arise, for example, from a weak battery or a jump start and can stress the electronics.

How can you tell that the 13504406 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently as soon as the control unit 13504406 reports a defect. In addition, an error message appears in the instrument cluster, and the diagnostic tool receives no connection to the control unit. Furthermore, the fault memory cannot be erased.

The signs are clear enough to start a check. A defect does not then remain hidden but becomes visible.

In an emergency the airbags and seatbelt pretensioners may not deploy. So do not wait until the warning light goes out on its own.

Which vehicles is the 13504406 fitted in?

The following vehicles are known for this control unit. The airbag control unit 13504406 is fitted in these vehicles: Chevrolet Cruze J300 (2008-2012) and J300 Facelift (2012-2016).

In detail, the vehicles are listed as follows:

• Chevrolet Cruze J300 (2008-2012)
• Chevrolet Cruze J300 Facelift (2012-2016)

First compare the part number on the label of the removed unit with this page. This only confirms that it is the right unit. Also have the fault memory read out beforehand, because it shows whether the control unit itself is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 13505823, 13580450, 13585613, 13589374, 22483423.

How does the repair of the 13504406 work?

Have the fault memory read out and attach the log. Then disconnect the battery and remove the control unit. After that, create the repair order online.

Pack the unit well before sending it in. Airbag24 checks the unit on the test bench, repairs defective components and erases the stored crash data.

A function test follows before the unit returns to you. Processing at Airbag24 usually takes 3–4 working days. 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 13504406 get to Airbag24?

You send the control unit 13504406 as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 sends it back to you by UPS.

Put the printed repair order into the parcel and pack the unit shock-proof.