Airbag control unit with part number 46782817

What does the airbag control unit 46782817 do?

The airbag control unit 46782817 controls the restraint system (SRS) of Fiat. It processes the signals from the crash sensors and decides in a real emergency, within milliseconds, whether airbags and seatbelt pretensioners fire. After an accident, it stores crash data and locks itself.

Monitoring runs constantly. The airbag warning light shows when something is wrong.

Why does the control unit 46782817 fail?

Crash data stored after an accident is the most common cause of a defect in the 46782817, even if no airbag fired. Normal diagnostic tools cannot erase these entries. Ageing components, cold solder joints, moisture on plugs and voltage spikes are also possible.

Nothing can be seen from outside on the crash data, so it must be read out specifically. These factors can also act together.

The remaining causes relate to age and moisture. A weak battery or jump-starting also sends voltage spikes into the vehicle electrics, which stress the electronics.

How can you tell that the 46782817 is defective?

A defect in the 46782817 shows itself when the airbag warning light in the instrument cluster stays on, whether constantly or only at times. An error message accompanies it, the diagnostic tool cannot reach the control unit, and the fault memory cannot be cleared. In a real emergency, airbags and seatbelt pretensioners may then fail to deploy.

The airbag warning light is the signal that is noticed fastest. It may stay on permanently or intermittently, and in both cases the cause lies within the system.

Such an indication is a warning and not a reason to wait. A workshop or a diagnostic tool can classify it more precisely.

Which vehicles is the 46782817 fitted in?

The airbag control unit 46782817 is found in several models at Fiat. It is installed in these vehicles: Fiat Seicento 187 (1998-2000) and 187 Facelift (2000-2008).

The overview below shows the vehicles we have on file for this part number.

• Fiat Seicento 187 (1998-2000)
• Fiat Seicento 187 Facelift (2000-2008)

Compare the part number on the label of the removed unit with this page; that only confirms the right unit. Also have the fault memory read out beforehand. Only this result shows whether the control unit is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 46552426, 46782818, 51719095, 5815661.

How does the repair of the 46782817 work?

It begins with reading out the fault memory of the 46782817; you enclose the log with the unit. Then you disconnect the battery and remove the control unit. Only then do you create the repair order online and send the packed unit.

Airbag24 first examines the unit on the test bench. Afterwards, defective components are reworked and the stored crash data removed.

Processing at Airbag24 usually takes 3–4 working days. Removal or shipping is not included in this. Afterwards, 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 46782817 get to Airbag24?

Your 46782817 reaches Airbag24 by parcel, or you book a UPS collection for an additional charge. After the repair, you receive it back via UPS.

Pack the unit shock-proof and enclose the printed repair order. Also write your return address clearly on the repair order.