Airbag control unit with part number P68185792AA

What does the airbag control unit P68185792AA do?

The airbag control unit P68185792AA is the central control unit of the SRS for Fiat. It processes the signals from the crash sensors and, in an impact, decides whether airbags and seatbelt pretensioners are triggered.

While the vehicle is in operation, the unit monitors the system and reports faults via the airbag warning light.

After an accident it stores crash data and locks itself.

Why does the control unit P68185792AA fail?

The most common cause is stored crash data after an accident, even if no airbag has deployed; normal diagnostic tools do not erase it. Ageing components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes can also be involved.

Stored crash data remains in the unit after the accident. Even if no airbag has fired, it cannot be removed with an ordinary diagnostic tool.

The other causes concern the electronics themselves. Components become susceptible over time, solder joints can go cold, and moisture or corrosion damages plug connections.

Voltage spikes also belong here, for example from a weak battery or a jump start.

How can you tell that the P68185792AA is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently when the control unit P68185792AA detects a fault. This is accompanied by fault messages, a lost connection to the diagnostic tool and a fault memory that cannot be cleared.

In an emergency, airbags and seatbelt pretensioners may then fail to trigger. This light in particular indicates that something in the restraint system needs checking.

In such a case, have the vehicle checked promptly.

Which vehicles is the P68185792AA fitted in?

The P68185792AA is fitted in these vehicles: Fiat 500 312 (2007-2024).

The list of vehicles for this unit follows:

• Fiat 500 312 (2007-2024)

You should compare the part number on the label of the removed unit with this page. That way you can be sure you have the correct unit. Whether the control unit is defective, or whether a plug or cable is the cause, is shown only by the fault memory that you had 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 P68185792AA work?

First have the fault memory read out and attach the log before the battery is disconnected. Then remove the control unit P68185792AA, create a repair order online and send the unit in, well packed. At Airbag24 processing usually takes 3–4 working days.

There the unit is examined on the test bench, defective components are repaired, the crash data is erased and a functional test is carried out. Afterwards your unit goes back 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 P68185792AA get to Airbag24?

The control unit P68185792AA comes to Airbag24 as a parcel, alternatively you book a UPS collection for an extra charge. The unit comes back to you by UPS once the repair is complete.

Enclose the printed repair order with the parcel and pack the control unit shockproof.