Airbag control unit with part number P68148023AB

What does the airbag control unit P68148023AB do?

The airbag control unit P68148023AB is the central control unit of the SRS for Fiat. It evaluates the sensor signals, determines in an accident how airbags and seatbelt pretensioners are triggered, and monitors the system constantly.

Triggering takes place within milliseconds as soon as the evaluation recognises an accident. The system is designed for this speed.

If the unit detects a fault, the airbag warning light in the instrument cluster shows it. After an accident, it stores crash data and locks itself; only the repair lifts the lock.

Why does the control unit P68148023AB fail?

The most common cause is crash data stored after an accident, even without a triggered airbag, which an ordinary diagnostic tool does not remove. Aged components, moisture and voltage spikes are added to this.

Airbag24 erases the crash data during the repair. The other causes can be described individually as follows:

• Aged electronic components
• Cold solder joints inside the unit
• Moisture and corrosion at plug connections
• Voltage spikes from a weak battery or a jump start

How can you tell that the P68148023AB is defective?

A defect in the P68148023AB is indicated when the airbag warning light in the instrument cluster stays on permanently or intermittently, a fault message appears, or the diagnostic tool cannot establish a connection. A fault memory that cannot be cleared is also a sign.

In an emergency, airbags and seatbelt pretensioners may then not trigger. This condition calls for a prompt check, not a delay.

The display in the instrument cluster is the intended route for this, the signal the vehicle itself gives.

Which vehicles is the P68148023AB fitted in?

The P68148023AB is fitted in these vehicles: Fiat 500 312 (2007-2024).

The assigned vehicles are listed as follows:

• Fiat 500 312 (2007-2024)

Compare the part number on the label of the removed unit with this page to make sure you have the correct control unit. Have the fault memory read out before removal. It shows whether the control unit itself 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 P68148023AB work?

First, have the fault memory read out and enclose the log. Then disconnect the battery before removing the control unit. Afterwards, create a repair order online and send the unit in well packed.

At Airbag24, the unit is checked on the test bench, faults in the components are repaired and the crash data is erased. Processing usually takes 3–4 working days.

A function test follows, and then your own unit is 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 P68148023AB get to Airbag24?

You send the control unit P68148023AB to Airbag24 as a parcel, or you book a UPS collection for an extra charge. The return after the repair is handled by UPS.

The printed repair order goes into the parcel, and the unit must be packed shock-resistant.