Airbag control unit with part number 50558479

What does the airbag control unit 50558479 do?

In a crash the control unit 50558479 decides within milliseconds which airbags and seatbelt pretensioners are triggered. It belongs to the restraint system (SRS) of Alfa Romeo, evaluates the signals of the crash sensors and monitors the system continuously. It reports faults via the airbag warning light.

The housing also carries the manufacturer number Bosch 0285014897. The electronics continuously check the connections to the sensors.

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

Why does the control unit 50558479 fail?

Stored crash data from an accident is the most common cause, even if no airbag has deployed; a standard diagnostic tool cannot erase it. Ageing components, moisture at plugs and voltage spikes are also to be considered.

The data originates from an accident and remains in the unit until Airbag24 erases it during the repair.

Besides this, the ageing of the electronics, cold solder joints and corrosion at plug connections play a role. Components lose reliability over time.

Voltage spikes, for example from a weak battery or a jump start, can also stress the electronics.

How can you tell that the 50558479 is defective?

The airbag warning light in the instrument cluster lights up continuously or intermittently. This is accompanied by error messages, a missing connection to the diagnostic tool, or a fault memory that cannot be erased.

Typical signs at a glance:

• airbag warning light on continuously or intermittently
• error message in the instrument cluster
• diagnostic tool does not reach the control unit
• fault memory cannot be erased

Do not treat the light as a minor matter, because in an emergency airbags and seatbelt pretensioners may not trigger.

Which vehicles is the 50558479 fitted in?

The control unit 50558479 from Alfa Romeo is fitted in these vehicles: Alfa Romeo Giulia 952 (2016-2023) and 952 Facelift (from 2023).

Listed here are the vehicles recorded for this part number.

• Alfa Romeo Giulia 952 (2016-2023)
• Alfa Romeo Giulia 952 Facelift (from 2023)

Comparing the part number on the label of the removed unit with this page only ensures that you have the correct unit. Have the fault memory read out before removal. Only that 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 50567775.

How does the repair of the 50558479 work?

The repair of the 50558479 begins with reading out the fault memory; you put the log into the parcel. Then disconnect the battery before the control unit is removed. Online you create the repair order and send the unit in well packed. Checking, repairing and testing at Airbag24 usually take 3–4 working days.

At Airbag24 the unit goes onto the test bench. There, defective components are repaired, the crash data is erased and a function test follows. Afterwards you receive your own unit 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 50558479 get to Airbag24?

Either you send the control unit 50558479 as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 returns the unit to you by UPS.

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