Airbag control unit with part number P68185795AA

What does the airbag control unit P68185795AA do?

The P68185795AA is the central control unit of the restraint system (SRS) in the Fiat. It receives the signals from the crash sensors, determines in a crash within milliseconds which airbags and seatbelt pretensioners fire, and monitors the system continuously.

The control unit detects faults itself. The airbag warning light in the instrument cluster shows them, accompanied by an error message.

After an accident, it stores crash data and locks itself. Only a repair lifts the lock.

Why does the control unit P68185795AA fail?

Stored crash data is the most common cause on the P68185795AA, even if no airbag fired in the accident. Aged electronic components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes can also cause failure.

The crash data remain in the memory, and a normal diagnostic tool cannot remove them. After an accident, it is therefore worth taking a close look at the crash memory.

The other causes are of a more general nature. Electronics age, solder joints can be cold, moisture attacks plug contacts, and voltage spikes arise, for example with a weak battery or when starting with jump leads.

How can you tell that the P68185795AA is defective?

The airbag warning light in the instrument cluster lights up on the P68185795AA permanently or intermittently. In addition, an error message appears in the instrument cluster, the diagnostic tool finds no connection to the control unit, and the fault memory cannot be cleared. In an emergency, the airbags and seatbelt pretensioners may then fail to deploy.

Pay particular attention to the warning light, as it reliably shows the condition of the system.

A fault memory that cannot be emptied indicates that the system has registered something that needs to be checked.

Which vehicles is the P68185795AA fitted in?

The P68185795AA is fitted in these vehicles: Fiat 500 312 (2007-2024).

The following vehicles are recorded for this unit:

• Fiat 500 312 (2007-2024)

Comparing the part number on the label of the removed unit with this page merely confirms that it is the right unit. So have the fault memory read out before removing the unit, because only this log shows whether the control unit is defective or 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 P68185795AA work?

During the repair of the P68185795AA, first have the fault memory read out and attach the log. Then disconnect the battery before removing the control unit. Next, create a repair order online and pack the unit well.

Airbag24 checks the submitted unit, repairs defective components, deletes the stored crash data and runs a function test. Afterwards, your own unit goes back to you.

Processing at Airbag24 normally takes 3–4 working days, and this information refers exclusively to the work 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 P68185795AA get to Airbag24?

You send the P68185795AA as a package or book a UPS collection for an extra charge. After the repair, Airbag24 sends the unit back to you by UPS.

Place the printed repair order in the packaging and pack the unit shock-proof.