Airbag control unit with part number 98 295 355 80

What does the airbag control unit 98 295 355 80 do?

The airbag control unit 98 295 355 80 is the central control unit of the restraint system (SRS) in Citroën vehicles. It processes the crash sensor signals, selects the airbags and seatbelt pretensioners to fire in an accident within milliseconds, and monitors the system continuously.

The unit reports faults via the airbag warning light in the instrument cluster. It also stores them in the fault memory.

After an accident, the unit stores crash data and locks itself. Only the repair lifts this lock.

Why does the control unit 98 295 355 80 fail?

The most common cause is crash data stored after an accident, even if no airbag was triggered; a normal diagnostic tool cannot erase it. Other causes are, in short, ageing of the electronics, moisture and corrosion, and voltage spikes.

• aged electronic components
• cold solder joints
• moisture and corrosion on plug connections
• voltage spikes, for example from jump-starting or a weak battery

Airbag24 erases the crash data during the repair. The inspection shows which of the other causes applies.

How can you tell that the 98 295 355 80 is defective?

A defect shows itself through the airbag warning light in the instrument cluster, which lights up permanently or intermittently, through a fault message in the instrument cluster, through a missing connection to the diagnostic tool, and through a fault memory that cannot be cleared.

• Airbag warning light lights up permanently or intermittently
• Fault message in the instrument cluster
• No connection to the diagnostic tool
• Fault memory cannot be cleared

In that case, airbags and seatbelt pretensioners may not be able to trigger in an emergency. Please have the warning checked promptly.

Which vehicles is the 98 295 355 80 fitted in?

The airbag control unit 98 295 355 80 is fitted in these vehicles: Citroën C4 Cactus I (2014-2018) and I Facelift (2018-2020).

The following list sets out the models assigned to this page.

• Citroën C4 Cactus I (2014-2018)
• Citroën C4 Cactus I Facelift (2018-2020)

Compare the part number on the label of the removed unit with this page; this only ensures that it is the correct unit. Please also 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 98 101 064 80.

How does the repair of the 98 295 355 80 work?

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

Airbag24 checks the unit on the test bench, replaces defective components, erases the crash data and carries out a function test. Your own unit is then sent 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 98 295 355 80 get to Airbag24?

You send the unit to Airbag24 as a parcel or 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; pack the unit shock-proof.