Airbag control unit with part number 158122

What does the airbag control unit 158122 do?

The airbag control unit 158122 belongs to the restraint system (SRS) of the Ferrari vehicle and controls it. It processes the signals from the crash sensors, determines in milliseconds in an accident which airbags and seatbelt pretensioners are triggered, and monitors the system continuously. It reports faults via the airbag warning light.

The unit is part of the safety technology and works unseen. In everyday life it shows itself only through indicators, such as the warning light.

After an accident the unit stores crash data and then locks itself.

Why does the control unit 158122 fail?

The most common cause is crash data stored after an accident, even if no airbag was triggered. Other triggers are wear in the electronics, moisture and corrosion, and voltage spikes.

A normal diagnostic tool cannot remove this data, so it stays stored until the repair. Further causes can be summarised in a short list:

• aged electronic components
• cold solder joints
• moisture and corrosion at plug connections
• voltage spikes, for example with a weak battery or jump-starting

How can you tell that the 158122 is defective?

The airbag warning light in the instrument cluster stays on permanently or only intermittently, and an error message also appears in the instrument cluster. In addition there is no connection to the diagnostic tool and a fault memory that cannot be cleared. In a crash, the airbags and seatbelt pretensioners may then possibly fail to deploy.

A lit warning light is not a random message but a notice from the control unit itself. Take it seriously and arrange a check.

Which vehicles is the 158122 fitted in?

The control unit 158122 is found in these vehicles: Ferrari 456 GT F116 (1992-1998) and F116 Facelift (1998-2003).

A list with the details follows below.

• Ferrari 456 GT F116 (1992-1998)
• Ferrari 456 GT F116 Facelift (1998-2003)

Compare the label on the removed unit with the part number on this page. That shows you have the right unit, and the comparison tells you nothing more. Have the fault memory read out beforehand. Only this log 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 169711, 174765.

How does the repair of the 158122 work?

For safety reasons this sequence applies: read out the fault memory, attach the log, disconnect the battery, and only then remove the control unit. Then create a repair order online and send the packed unit in. Processing at Airbag24 usually takes 3–4 working days, during which the unit is checked, repaired and tested.

In the test operation, defective components are replaced, stored crash data is erased and a function test is carried out before your own unit is sent back.

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 158122 get to Airbag24?

You send the unit to Airbag24 as a parcel or book a UPS collection for an extra charge. The repaired unit is returned by UPS.

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