Airbag control unit with part number P68148023AC

What does the airbag control unit P68148023AC do?

The airbag control unit P68148023AC is the control centre of the SRS system for Fiat. It reads the sensors, determines in an accident which airbags and seatbelt pretensioners to trigger, and monitors the system continuously. Faults appear via the airbag warning light.

The electronics check the connections between the components and log deviations.

After an accident, the unit stores crash data and locks itself.

Why does the control unit P68148023AC fail?

Stored crash data from an accident is the most common cause with the P68148023AC, even if no airbag has triggered, and a normal diagnostic tool cannot erase it. Ageing electronics, cold solder joints, moisture and corrosion at plug connections, and voltage spikes are also suspected.

At Airbag24, the crash data is erased during the repair before the unit is returned.

Age-related changes in components, cold solder joints and moisture at plugs are part of everyday life for electronics.

Voltage spikes arise, for example, from a weak battery or from a jump start.

How can you tell that the P68148023AC is defective?

The airbag warning light in the instrument cluster and fault messages about the airbag system are the most visible signs with the P68148023AC. In addition come connection problems with the diagnostic tool and a fault memory that cannot be emptied. In an emergency, airbags and seatbelt pretensioners may then fail to trigger.

• The airbag warning light stays on permanently.
• The light appears only intermittently.
• A fault message regarding the airbag system appears in the instrument cluster.
• The diagnostic tool finds no connection to the control unit.

A warning light that stays on permanently belongs in the hands of a specialist workshop.

Which vehicles is the P68148023AC fitted in?

The control unit P68148023AC is fitted in these vehicles: Fiat 500 312 (2007-2024).

These vehicles are recorded:

• Fiat 500 312 (2007-2024)

Matching the part number on the label with this page only ensures that you have the right unit. The fault memory read out is what clarifies the cause, because it shows whether the control unit is defective or whether a plug or a cable is affected.

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 P68148023AC work?

First have the fault memory read out and enclose the log. Then disconnect the battery and remove the P68148023AC. Create the repair order online, and the well-packed unit then goes on its way.

Because it is a restraint system, the sequence is not negotiable; it concerns safety during removal.

On the test bench the unit is analysed, defective components are repaired, the crash data is erased and the function is tested. Afterwards, your own unit is returned to you. Checking, repairing and testing usually take 3–4 working days 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 P68148023AC get to Airbag24?

You send the P68148023AC as a parcel, or you book a UPS collection for an extra charge. Airbag24 handles the return by UPS.

Place the printed repair order in the parcel and pack the control unit shockproof.