Airbag control unit with part number 9810155680

What does the airbag control unit 9810155680 do?

The airbag control unit 9810155680 is the central control unit of the restraint system (SRS) for Citroën. It processes the signals from the crash sensors and in a crash decides within a very short time which airbags and seatbelt pretensioners are triggered.

In addition it monitors the system constantly and reports faults via the airbag warning light.

After an accident the unit stores crash data and locks itself.

Why does the control unit 9810155680 fail?

Most often the cause lies in crash data stored after an accident, even if no airbag fired. Other causes are aged electronic components, cold solder joints, moisture and corrosion on plug connectors, and voltage spikes.

Stored crash data remains in the unit.

Voltage spikes arise for example from a weak battery or a jump start. Moisture and corrosion attack the plug connections, which can only be assigned clearly during a check.

How can you tell that the 9810155680 is defective?

A defect shows itself mainly through the airbag warning light, which lights up permanently or intermittently in the instrument cluster. Further signs are easy to observe.

• fault message in the instrument cluster
• diagnostic tool cannot find the control unit
• fault memory cannot be cleared

In an emergency, airbags and seatbelt pretensioners may not fire. Therefore have the system checked promptly.

Which vehicles is the 9810155680 fitted in?

The control unit 9810155680 is fitted in these vehicles: Citroën C5 II 1st Facelift (2010-2012), II (2008-2010) and II 2nd Facelift (2012-2017).

The list shows the individual vehicles in which this unit is installed.

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

Comparing the part number on the label of the removed unit with this page only ensures that it is the right unit. It does not clarify the cause. Only reading out the fault memory shows whether the control unit is defective or whether a plug or cable is the cause, so have it read out beforehand.

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

How does the repair of the 9810155680 work?

First have the fault memory read out, enclose the log, then disconnect the battery before removing the control unit. Afterwards create a repair order online and send the unit in well packed. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 checks the unit on the test bench and repairs defective components. A functional test follows, after which your own unit goes 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 9810155680 get to Airbag24?

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

Pack the unit shock-proof and enclose the printed repair order.