Airbag control unit with part number P68148023AA

What does the airbag control unit P68148023AA do?

The airbag control unit P68148023AA forms the central control unit of the restraint system (SRS) in Fiat vehicles. It reads the signals from the crash sensors, determines within milliseconds in an accident which airbags and seatbelt pretensioners are triggered, and monitors the system permanently.

As soon as the unit detects a fault, it reports it via the airbag warning light in the instrument cluster. In this way the state of the restraint system remains visible to the driver at all times.

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

Why does the control unit P68148023AA fail?

Most often the cause lies in crash data that remained in memory after an accident, even if no airbag was triggered. A standard diagnostic tool cannot remove it. Further causes are aged electronic components, cold solder joints, moisture and corrosion on plugs, and voltage spikes, for example from a weak battery or a jump-start.

Crash data in particular can mean that a unit remains conspicuous long after the accident, even though nothing can be seen on the vehicle any more. Airbag24 removes this data as part of the repair.

The other causes can develop over a longer period. That is why plug connections and the vehicle electrical system belong to every check.

How can you tell that the P68148023AA is defective?

A defect is indicated by an airbag warning light in the instrument cluster that lights up permanently or intermittently, an error message in the display, a missing connection between the diagnostic tool and the control unit, and a fault memory that cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then not trigger.

The warning light is a direct message from the system and not a random finding. It should therefore be taken seriously and checked promptly.

A car that is driven completely normally in everyday use can also have a stored fault. Only the read-out shows what is in the memory.

Which vehicles is the P68148023AA fitted in?

The control unit P68148023AA is fitted in these vehicles: Fiat 500 312 (2007-2024).

Here follows the overview of the assigned vehicles:

• Fiat 500 312 (2007-2024)

Compare the part number on the label of the removed unit with this page, so that you know for certain you have the right unit. Also have the fault memory read out beforehand. Only this log shows whether the control unit is defective or a plug 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 P68148023AA work?

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

Airbag24 checks the unit on the test bench, replaces defective components, erases the stored crash data and carries out a function test. Afterwards you receive your own device back.

The 3–4 working days refer solely to inspection, repair and testing at Airbag24. 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 P68148023AA get to Airbag24?

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

Pack the printed repair order into the parcel and pack the unit shock-proof.