Airbag control unit with part number 46763600

What does the airbag control unit 46763600 do?

The airbag control unit 46763600 is the central control unit of the restraint system (SRS) for Fiat. It evaluates the signals of the crash sensors, decides in an accident on triggering airbags and seatbelt pretensioners, and monitors the system continuously. After an accident it stores crash data and locks itself.

The control unit reports faults via the airbag warning light in the instrument cluster. Evaluation runs continuously, so that the system reacts without delay in an emergency.

The function of this unit determines whether the restraint systems work as intended in an emergency.

Why does the control unit 46763600 fail?

The most common cause is stored crash data after an accident, even if no airbag has deployed. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connectors, and voltage peaks.

Crash data remains in the memory of the unit after an accident, even if no airbag has deployed. A normal diagnostic tool cannot erase it, so the fault stays visible.

The other causes concern the electronics and their connections. Components age, solder joints can be cold, and moisture or corrosion weakens the contact at the plugs. Voltage peaks, for example from a weak battery or a jump-start, additionally stress the electronics.

How can you tell that the 46763600 is defective?

A defect shows up at the airbag warning light, in error messages in the instrument cluster, in a missing connection to the diagnostic tool and in a fault memory that cannot be cleared. Airbags and seatbelt pretensioners may then fail to trigger in an emergency.

The airbag warning light lights up permanently or intermittently. An error message appears in the instrument cluster alongside it, and a diagnostic tool finds no connection to the control unit. A fault memory that cannot be cleared is a further sign of a defect.

The warning light indicates the defect, and you can rely on that.

Which vehicles is the 46763600 fitted in?

The control unit 46763600 is fitted in these vehicles: Fiat Marea 185 (1996-1999) and 185 Facelift (1999-2003).

This list shows the assigned vehicles:

• Fiat Marea 185 (1996-1999)
• Fiat Marea 185 Facelift (1999-2003)

Comparing the part number on the label of the removed unit with this page only ensures that it is the right unit. Have the fault memory read out beforehand, because the 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 46409123, 46475013, 46538652, 46550647.

How does the repair of the 46763600 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and only then remove the control unit. Afterwards create a repair order online and send the unit in well packed. Processing at Airbag24 takes 3–4 working days as a rule.

Airbag24 tests the control unit on the test bench and replaces defective components. Afterwards Airbag24 deletes the stored crash data and carries out a function test.

Afterwards your own unit is sent 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 46763600 get to Airbag24?

You send the control unit in as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it to you by UPS.

Put the printed repair order into the parcel and pack the unit shockproof.