Airbag control unit with part number P68185793AA

What does the airbag control unit P68185793AA do?

The airbag control unit P68185793AA is the central control unit of the SRS for Fiat. It evaluates the signals from the crash sensors and, in an accident, decides within milliseconds which airbags and seatbelt pretensioners are triggered.

It monitors the entire system and shows faults via the airbag warning light. After an accident it stores crash data and locks itself.

Why does the control unit P68185793AA fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed. Further causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data cannot be erased with a normal diagnostic tool. Airbag24 takes care of this during the repair.

Voltage spikes arise, for example, with a weak battery or a jump start, and they can stress the electronics.

How can you tell that the P68185793AA is defective?

A defect is indicated by the airbag warning light in the instrument cluster, which stays on permanently or intermittently. Airbags and seatbelt pretensioners may then fail to deploy in an emergency.

Further signs at a glance:

• error message in the instrument cluster
• diagnostic tool without connection to the control unit
• fault memory that cannot be cleared

If you notice any of these signs, have the system checked.

Which vehicles is the P68185793AA fitted in?

The airbag control unit P68185793AA is fitted in these vehicles: Fiat 500 312 (2007-2024).

The list of vehicles on record for this part number follows:

• Fiat 500 312 (2007-2024)

Compare the part number on the label of the unit with this page, and you will know that it is the right unit. Have the fault memory read out beforehand. Only its result shows whether the control unit is defective or whether a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 51782985, 51870005, 51897810, 51918659, 51963734, 519637734.

How does the repair of the P68185793AA work?

First have the fault memory read out and enclose the log, then disconnect the battery and only then remove the control unit. Next, create the repair order online and send the unit in. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 checks the unit on the test bench, replaces defective components, erases stored crash data and carries out a function test.

Afterwards your own unit goes back. 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 P68185793AA get to Airbag24?

The unit goes to Airbag24 as a parcel, or you book a UPS collection for an extra charge. The return after the repair is by UPS.

Enclose the repair order printed out and pack the control unit shock-proof.