Airbag control unit with part number 50545333

What does the airbag control unit 50545333 do?

The airbag control unit 50545333 is the central control unit of the restraint system (SRS) of Alfa Romeo. It processes the sensor data, decides in a collision whether airbags and seatbelt pretensioners trigger, and monitors the system continuously.

The unit reports faults to the airbag warning light in the instrument cluster. This is how you learn that something is wrong in the restraint system.

After an accident the control unit stores crash data and is then locked.

Why does the control unit 50545333 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed. An ordinary diagnostic tool cannot erase it. Other causes include aged components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

The fact that the airbag did not deploy does not mean that no crash data was created. The unit stores the event anyway, and the data remains in memory afterwards.

The other causes concern the electronics. Components age, solder joints can go cold, and moisture or corrosion disturb plug connections. Voltage spikes, for example from a weak battery or jump-starting, can also affect the unit.

How can you tell that the 50545333 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, an error message is displayed, the diagnostic tool finds no connection to the control unit, and the fault memory cannot be cleared.

• Airbag warning light permanently or intermittently on
• error message in the instrument cluster
• diagnostic tool cannot reach the control unit
• fault memory cannot be cleared

In an emergency, airbags and seatbelt pretensioners may possibly fail to deploy. Have such a sign checked promptly.

Which vehicles is the 50545333 fitted in?

The 50545333 is fitted in these vehicles: Alfa Romeo 4C 960 (2014-2018).

The vehicles in detail:

• Alfa Romeo 4C 960 (2014-2018)

Compare the part number on the label of the removed unit with this page. That only ensures that it is the correct unit. Also have the fault memory read out before removal, because only this log shows whether the control unit is defective or a plug or cable is the cause.

How does the repair of the 50545333 work?

Processing at Airbag24 usually takes 3–4 working days. Beforehand you have the fault memory read out and enclose the log, then disconnect the battery and remove the control unit. Afterwards you create a repair order online and send the unit in well packed.

Airbag24 checks the unit, repairs defective components, erases the stored crash data and carries out a function test. Afterwards your own unit goes 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 50545333 get to Airbag24?

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

Place the printed repair order in the parcel and pack the unit shockproof.