Airbag control unit with part number 9673787280

What does the airbag control unit 9673787280 do?

The airbag control unit 9673787280 is the central control unit of the restraint system (SRS) for Citroën. It evaluates the signals from the crash sensors and, in the event of an accident, decides within milliseconds which airbags and seatbelt pretensioners are triggered.

The control unit monitors the entire system continuously. If it detects a fault, it shows this via the airbag warning light in the instrument cluster.

After an accident, it stores crash data and locks itself.

Why does the control unit 9673787280 fail?

The most common cause is crash data stored after an accident, even if no airbag was triggered. Aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery or jump-starting, are also possible causes.

Crash data cannot be erased with a standard diagnostic tool. Airbag24 erases it during the repair. Which of the remaining causes applies only becomes clear through the test, because it cannot be recognised from the outside.

Aged components, cold solder joints and corrosion affect the electronics themselves or their connections, whereas voltage spikes affect the power supply.

How can you tell that the 9673787280 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently. An error message also appears in the instrument cluster, the diagnostic tool cannot connect to the control unit, or the fault memory cannot be cleared.

In that case, the airbags and seatbelt pretensioners may fail to trigger in an emergency. The light indicates the fault, so it is worth looking into it promptly.

Which vehicles is the 9673787280 fitted in?

The control unit 9673787280 is fitted in these vehicles: Citroën C5 II 1st Facelift (2010-2012), II (2008-2010) and II 2nd Facelift (2012-2017).

The assignment to the individual models is shown in this overview:

• Citroën C5 II 1st Facelift (2010-2012)
• Citroën C5 II (2008-2010)
• Citroën C5 II 2nd Facelift (2012-2017)

Compare the part number on the label of the removed unit with this page. This only ensures that you have the correct unit. Have the fault memory read out beforehand, because only this result shows whether the control unit is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 9657456680, 9665266080, 9665558180, 9674290580.

How does the repair of the 9673787280 work?

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

Airbag24 tests the control unit on the test bench, repairs defective components, erases the stored crash data and carries out a function test. The unit is then 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 9673787280 get to Airbag24?

You send the unit in as a parcel or book a UPS collection for an extra charge. After completion of the repair, Airbag24 returns it to you by UPS.

The printed repair order belongs in the parcel. Pack the control unit shock-resistant so that it arrives undamaged.