Airbag control unit with part number 0285001652

What does the airbag control unit 0285001652 do?

The airbag control unit 0285001652 is the restraint system (SRS) control unit in Audi vehicles. It checks the signals of the crash sensors, decides within milliseconds in an impact whether the airbags and seatbelt pretensioners are triggered, and checks the system continuously. It reports faults via the airbag warning light.

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

The evaluation runs constantly in the background, even if you notice nothing of it.

Why does the control unit 0285001652 fail?

The most common cause is stored crash data, and this applies even without a triggered airbag. A normal diagnostic tool cannot remove this data. Other causes are aged components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

The crash data arises after an accident and remains in the memory. At Airbag24 it is erased as part of the repair.

The other causes concern the electronics and their connections. Moisture and corrosion attack plug connectors, and voltage spikes occur, for example, with a weak battery or jump-starting.

How can you tell that the 0285001652 is defective?

The airbag warning light in the instrument cluster lights up either constantly or at times. In addition, the instrument cluster displays a fault message, the diagnostic tool finds no contact with the control unit, and the fault memory cannot be cleared.

In such a case, airbags and seatbelt pretensioners may not deploy in an emergency. Have the system checked without much delay.

Which vehicles is the 0285001652 fitted in?

The control unit 0285001652 is fitted in these vehicles: Audi A4 B6 8E (2000-2004) and B6 8H Convertible (2002-2006).

The following list shows the vehicles to which this part number is assigned.

• Audi A4 B6 8E (2000-2004)
• Audi A4 B6 8H Convertible (2002-2006)

Compare the part number on the label of the removed unit with this page to make sure you have the right unit. The cause is not clarified by this. Therefore have the fault memory read out, because only that shows whether the control unit is defective or a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 0285001400, 0285001703, 8E0 959 655, 8E0 959 655 B, 8E0 959 655 J, 8H0 959 655 B.

How does the repair of the 0285001652 work?

First have the fault memory read out and enclose the log, then disconnect the battery and only then remove the control unit 0285001652. Processing at Airbag24 usually takes 3–4 working days.

After removal, create a repair order online and send the unit off well packed. Airbag24 checks the unit on the test bench, replaces defective components, erases stored crash data and carries out a function test, after which the unit is returned 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 0285001652 get to Airbag24?

You can send the unit as a parcel or, for an extra charge, book a UPS collection. After the repair UPS brings the unit from Airbag24 back to you.

The printed repair order goes in the parcel, and you pack the control unit shockproof.