Airbag control unit with part number 9224275-01

What does the airbag control unit 9224275-01 do?

The airbag control unit 9224275-01 is the central control unit of the restraint system (SRS) in BMW. It evaluates the signals from the crash sensors and determines within milliseconds which airbags and seatbelt pretensioners are triggered in an accident.

The unit monitors the system continuously and shows faults via the airbag warning light in the instrument cluster.

After an accident, it stores crash data and locks itself.

Why does the control unit 9224275-01 fail?

The most common cause on the 9224275-01 is crash data stored after an accident, even if no airbag has deployed. Other possible causes are aged electronic components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes.

A standard diagnostic tool cannot reach the crash data to erase it. The record therefore remains until the data is removed during the repair.

The other causes concern the electronics and the connections. Voltage spikes arise, for example, from a weak battery or a jump start, and the test determines which cause is present.

How can you tell that the 9224275-01 is defective?

The airbag warning light in the instrument cluster lights up on the 9224275-01, either permanently or intermittently. The instrument cluster also shows error messages, the diagnostic tool finds no connection to the control unit, and the fault memory cannot be cleared.

As long as these signs are present, airbags and seatbelt pretensioners may not be able to deploy in an emergency. Take the warning signal seriously.

The light is one of the clearest hints the vehicle gives you, and it deserves a prompt check.

Which vehicles is the 9224275-01 fitted in?

The 9224275-01 is fitted in these vehicles: BMW 7 Series F04 ActiveHybrid (2012-2015), F04 ActiveHybrid (2010-2012), F01 (2008-2012) and F01 LCI (2012-2015).

The following vehicles are stored for this part number:

• BMW 7 Series F04 ActiveHybrid (2012-2015)
• BMW 7 Series F04 ActiveHybrid (2010-2012)
• BMW 7 Series F01 (2008-2012)
• BMW 7 Series F01 LCI (2012-2015)

Compare the part number on the label of the removed unit with this page. This tells you that it is the correct unit. Whether the control unit itself is defective or whether a plug or a cable is the cause is shown only by the fault memory. Therefore, have it read out beforehand.

For the same vehicles, we also repair control units with the part numbers 65 77 9 266 328, 65779199756, 6857314, 9199756, 9209684, 9224275.

How does the repair of the 9224275-01 work?

First, have the fault memory read out and enclose the log. Then disconnect the battery and only then remove the 9224275-01.

Next, create a repair order online and send in the well-packed unit. Airbag24 checks it on the test bench, replaces defective components, deletes stored crash data and carries out a function test.

Checking, repairing and testing at Airbag24 is usually scheduled for 3–4 working days. 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 9224275-01 get to Airbag24?

You send the 9224275-01 as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 sends the unit back to you by UPS.

Place the printed repair order in the parcel. Pack the control unit securely against impact.