Airbag control unit with part number 00052078055

What does the airbag control unit 00052078055 do?

The airbag control unit 00052078055 is the central control unit of the SRS system in Fiat. It evaluates the crash sensors and decides within milliseconds in an accident which airbags and seatbelt pretensioners are triggered.

In addition, it monitors all components of the system constantly. If it detects a fault, this is shown via the airbag warning light.

After an accident, the control unit stores crash data and locks itself. This lock remains in place until the unit has been repaired.

Why does the control unit 00052078055 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed. A normal diagnosis cannot erase the crash data. Further causes include ageing components, cold solder joints, moisture and corrosion, as well as voltage spikes.

Crash data in particular can be overlooked, because nothing conspicuous can be seen on the vehicle after the event. It remains, however, in the memory of the control unit.

The other causes concern the electronics. Components lose reliability with age, solder joints can become cold, and moisture or corrosion damage the plug connections. Voltage spikes arise, for example, from a weak battery or a jump start.

How can you tell that the 00052078055 is defective?

The airbag warning light in the instrument cluster stays on permanently or intermittently. A fault message appears in the instrument cluster, and the diagnostic tool finds no contact with the control unit.

A fault memory that cannot be cleared confirms the suspicion. In an emergency, airbags and seatbelt pretensioners may then not deploy.

The warning light shows the defect on its own, so you should not ignore it.

Which vehicles is the 00052078055 fitted in?

The 00052078055 is fitted in these vehicles: Fiat Tipo 356 (2016-2020).

The list of vehicles that Airbag24 holds for this part number follows below.

• Fiat Tipo 356 (2016-2020)

Compare the part number on the label of the removed unit with this page. That only ensures it is the correct unit. Have the fault memory read out beforehand, because only the log shows whether the control unit or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 00052090728, 156348104, 208055, 52017547.

How does the repair of the 00052078055 work?

First have the fault memory read out and attach the log. Then disconnect the battery and only then remove the control unit. Online, you create a repair order, and the 3–4 working days it takes at Airbag24 begin with processing.

This order is mandatory for safety reasons. Afterwards, pack the unit well and send it in.

Airbag24 checks the control unit on the test bench, replaces defective components, erases 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 00052078055 get to Airbag24?

You send the 00052078055 as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 sends the unit back by UPS.

Enclose the printed repair order with the parcel and pack the control unit shock-resistant.