Airbag control unit with part number 9650091280

What does the airbag control unit 9650091280 do?

As the central control unit of the SRS system in Citroën, the airbag control unit 9650091280 evaluates the crash sensors. In an accident it decides on the triggering of airbags and seatbelt pretensioners and monitors the system continuously.

It shows faults via the airbag warning light. An accident leaves crash data in the unit, after which it locks itself.

Why does the control unit 9650091280 fail?

The most common cause with the 9650091280 is stored crash data, even if the airbag has not triggered. They cannot be erased with a normal diagnostic tool. In addition, aged components, moisture and voltage spikes can cause the failure.

These further points come into consideration:

• electronic components that wear out over time
• cold solder joints in the unit
• moisture or corrosion on plugs
• voltage spikes, for example when starting with a jump-start

How can you tell that the 9650091280 is defective?

A defect in the 9650091280 becomes visible when the airbag warning light in the instrument cluster lights up constantly or intermittently. Error messages in the instrument cluster also indicate it.

These characteristics occur:

• The warning light does not go out.
• A message appears in the instrument cluster.
• The diagnostic tool does not find the control unit.
• The fault memory remains.

In such a finding, the airbags and seatbelt pretensioners may not trigger in an emergency. A prompt check is therefore advisable.

Which vehicles is the 9650091280 fitted in?

The 9650091280 was fitted in these vehicles: Citroën C3 I (2002-2005) and I Facelift (2005-2009).

This overview shows the assignment:

• Citroën C3 I (2002-2005)
• Citroën C3 I Facelift (2005-2009)

Comparing the part number on the removed unit with this page only tells you that it is the right unit. Which cause applies is shown by the fault memory, which must be read out beforehand: it shows whether the control unit is defective or whether a plug or cable is affected.

For the same vehicles, we also repair control units with the part numbers 9647794180, 9649003580, 9651927380, 9651927580, 9656888580, 9656889080.

How does the repair of the 9650091280 work?

First read out the fault memory and attach the log, then disconnect the battery. Only after that remove the 9650091280 and create a repair order online. Processing at Airbag24 usually takes 3–4 working days.

Pack the unit well and send it in. At the test bench, Airbag24 inspects the unit, fixes the defects in the components, erases the crash data and tests the function. Afterwards your own unit comes back 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 9650091280 get to Airbag24?

You send the 9650091280 by parcel, or you choose a UPS collection for an extra charge. After the repair, UPS brings the unit back to you.

Give the printed repair order to the parcel; pack the unit shock-proof.