Airbag control unit with part number P68312952AA

What does the airbag control unit P68312952AA do?

The airbag control unit P68312952AA is the control centre of the SRS for vehicles of the make Fiat. It checks the crash sensors continuously and, in a crash, decides within milliseconds which airbags and seatbelt pretensioners deploy. It also monitors the entire system.

It shows faults via the airbag warning light in the instrument cluster. After a crash it stores crash data and locks itself.

Why does the control unit P68312952AA fail?

Stored crash data is the most common cause, even if no airbag has deployed. A standard diagnostic tool cannot erase it. Aged components, moisture at connectors and voltage spikes also play a role.

The unit records these entries itself and keeps them until the repair removes them.

Cold solder joints and corrosion on connectors also count among the possible causes.

How can you tell that the P68312952AA is defective?

Signs of a defect are messages in the instrument cluster. The diagnostic tool then finds no connection to the control unit. In an emergency, airbags and seatbelt pretensioners may not deploy.

• Airbag warning light on permanently or intermittently
• Fault message in the instrument cluster
• No connection to the diagnostic tool
• Fault memory cannot be cleared

The airbag warning light signals a fault, which is why it deserves special attention.

Which vehicles is the P68312952AA fitted in?

The number is decisive, not the model name. The make Fiat uses the control unit P68312952AA in these vehicles: Fiat 500 312 (2007-2024).

Here is the list of vehicles:

• Fiat 500 312 (2007-2024)

The label on the removed unit gives the number, which you compare with this page. This comparison only confirms the right unit. Have the fault memory read out in addition, because only its log shows whether the control unit is defective or whether a plug and cable are 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 P68312952AA work?

The first step is reading out the fault memory; the log goes into the parcel with the unit. Then disconnect the battery and remove the control unit. Create the repair order online before the well-packed unit is sent in.

Airbag24 carries out the assessment on the test bench. Where necessary, components are replaced, crash data is erased and a functional test is run. Processing usually takes 3–4 working days.

On the vehicle the sequence is not up for discussion, because it serves safety.

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 P68312952AA get to Airbag24?

A parcel brings the unit to us, and you can book a UPS collection for an extra charge. The return journey follows by UPS after the repair.

The printed repair order goes into the parcel, and the packaging must be shock-proof.