Airbag control unit with part number 51851217

What does the airbag control unit 51851217 do?

The airbag control unit 51851217 controls the restraint system (SRS) for Fiat. Based on the crash sensors, it decides in an accident within milliseconds which airbags and seatbelt pretensioners are triggered.

In addition, all connected components are monitored in the background. If it finds a fault, it points to it via the airbag warning light.

After a crash, the unit stores crash data and locks itself.

Why does the control unit 51851217 fail?

The most common cause for the 51851217 is stored crash data after an accident, even if no airbag has triggered. A normal diagnostic tool cannot erase crash data. Other causes are aged electronics, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Stored crash data also arises when the accident had no consequences for the airbags. Airbag24 erases it during the repair, so no old entries remain in the unit afterwards.

Aged electronic components and cold solder joints are among the other causes, as are moisture and corrosion at the plug connections.

Voltage spikes, for example from a weak battery or jump-starting, briefly stress the electronics.

How can you tell that the 51851217 is defective?

On the 51851217, a defect shows when the airbag warning light in the instrument cluster stays on permanently or intermittently. An error message in the instrument cluster may also appear, the diagnostic tool may find no connection, or the fault memory cannot be cleared.

With these signs, airbags and seatbelt pretensioners may not trigger in an emergency.

The light is therefore a clear reason to have the system examined.

Which vehicles is the 51851217 fitted in?

The 51851217 is fitted in these vehicles: Fiat Bravo 198 (2007-2014).

The list below shows the vehicles as they are recorded in our data for this part number.

• Fiat Bravo 198 (2007-2014)

Compare the part number on the label of the removed unit with this page, so you know for sure that it is the right unit. You should have the fault memory read out beforehand, because only this result shows whether the control unit is defective or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 51775404, 51827584, 51827585, 51873889, 5WK43640, 5WK43641.

How does the repair of the 51851217 work?

In the repair of the 51851217, you read out the fault memory and attach the log before you disconnect the battery. Only then do you remove the control unit, create a repair order online and send the unit in well packed.

Airbag24 checks the unit on the test bench, repairs defective components and erases the stored crash data. A function test follows. For checking, repairing and testing at Airbag24, allow 3–4 working days as a rule.

After that, 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 51851217 get to Airbag24?

The 51851217 reaches Airbag24 either as a parcel, or you book a UPS collection for an extra charge. Returns after the repair are handled by UPS.

Put the printed repair order in the parcel and pack the unit shock-proof.