Airbag control unit with part number 98 101 064 80

What does the airbag control unit 98 101 064 80 do?

The airbag control unit 98 101 064 80 is the central unit of the restraint system (SRS) for Citroën. It checks the signals from the crash sensors, decides on airbags and seatbelt pretensioners in an accident, and monitors the system permanently.

Irregularities are reported via the airbag warning light in the instrument cluster.

After an accident, the unit stores crash data and locks itself. This crash data plays a central role in the repair.

Why does the control unit 98 101 064 80 fail?

Crash data from an accident is the most frequent trigger of the problem on the 98 101 064 80, even if no airbag has deployed. Other causes are ageing electronics, cold solder joints, moisture and corrosion, and voltage spikes.

Crash data cannot be erased with a normal diagnostic tool. For this reason, Airbag24 removes it as part of the repair.

Ageing electronics and cold solder joints can interrupt contacts. Moisture and corrosion impair the plug connections, and voltage spikes, for example from a weak battery or jump-starting, put additional strain on the unit.

How can you tell that the 98 101 064 80 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently when the 98 101 064 80 is defective.

An error message also appears in the instrument cluster. In addition, a diagnostic tool cannot connect to the control unit, and the fault memory cannot be cleared. These are the typical signs.

If these signs occur, the airbags and seatbelt pretensioners may not trigger in an emergency. Therefore, have the system checked promptly.

Which vehicles is the 98 101 064 80 fitted in?

These vehicles use the 98 101 064 80: Citroën C4 Cactus I (2014-2018) and I Facelift (2018-2020).

Here is the overview for this part number:

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

Matching the part number on the label confirms only that it is the right unit. The fault memory decides whether the control unit is defective or whether a plug or cable is the cause, which is why you should have it read out beforehand.

For the same vehicles, we also repair control units with the part numbers 98 295 355 80.

How does the repair of the 98 101 064 80 work?

First have the fault memory read out and attach the log, then disconnect the battery and only then remove the 98 101 064 80. Processing at Airbag24 usually takes 3–4 working days.

In the next step, create a repair order online and pack the unit well before sending it. Airbag24 checks it on the test bench, replaces defective components, erases crash data and carries out a function test. Your own 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 98 101 064 80 get to Airbag24?

You can send the 98 101 064 80 as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it to you by UPS.

Print the repair order and put it in the parcel, and pack the unit shockproof.