Airbag control unit with part number P68170224AA

What does the airbag control unit P68170224AA do?

The P68170224AA controls the restraint system (SRS) at Fiat. It continuously checks the crash sensors and the connected components and, in a collision, triggers the appropriate airbags and seatbelt pretensioners within fractions of a second.

If the unit detects a fault, it indicates this via the airbag warning light. After a collision it stores crash data and locks itself.

All sensors and triggers are connected to this unit. A failure therefore affects the entire restraint system, not just a part of it.

Why does the control unit P68170224AA fail?

The most common cause on the P68170224AA is crash data stored after a collision, even if no airbag has deployed. A standard diagnostic tool does not remove it. Added to this are aged electronic components, cold solder joints, moisture with corrosion at plug connections and voltage spikes, for example with a weak battery or jump-starting.

In plain terms: Airbag24 removes the crash data during the repair, even though an ordinary diagnostic tool cannot erase it.

The remaining causes relate to ageing, moisture or a strained power supply. They act on the electronics over a longer period.

How can you tell that the P68170224AA is defective?

The airbag warning light in the instrument cluster lights up on the P68170224AA permanently or intermittently. In addition, a diagnostic tool gets 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.

A fault message in the instrument cluster is added where the vehicle displays one. The light is therefore the first indication from the system.

Anyone who sees this display should have the fault memory read out promptly.

Which vehicles is the P68170224AA fitted in?

For Fiat, the P68170224AA is fitted in this vehicle: Fiat 500 312 (2007-2024). The information is based on the stored assignment.

The stored vehicles are listed below:

• Fiat 500 312 (2007-2024)

Compare the part number on the label of the removed unit with this page; this only checks whether it is the correct unit. Whether the control unit is defective or a plug or cable is the cause is shown only by the log of a fault memory read out beforehand.

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 P68170224AA work?

The check, repair and function test at Airbag24 usually take 3–4 working days. Beforehand you have the fault memory read out, disconnect the battery and only then remove the P68170224AA. Afterwards you create the repair order online.

On the test bench Airbag24 examines the unit, replaces defective components, erases the crash data and carries out a function test. You attach the log of the fault memory to the parcel.

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 P68170224AA get to Airbag24?

You send the P68170224AA as a parcel, or you book a UPS collection for an extra charge. Airbag24 sends it back to you by UPS after the repair.

The printed repair order belongs in the parcel. Pack the unit shock-proof so that it survives transport undamaged.