Airbag control unit with part number A0285010217

What does the airbag control unit A0285010217 do?

In vehicles from Mercedes-Benz, the airbag control unit A0285010217 controls the restraint system (SRS). It reads the crash sensors, determines in a crash which airbags and seatbelt pretensioners trigger, and monitors the system without interruption.

It indicates detected faults via the airbag warning light. The monitoring covers the sensors, the wiring and the connected triggering elements.

After an accident, crash data is stored and the unit then locks itself.

Why does the control unit A0285010217 fail?

Stored crash data after an accident is the most common cause, even if no airbag has triggered. Common diagnostic tools cannot remove it. In addition there are aged electronic components, cold solder joints, moisture and corrosion on plug connections and voltage spikes, for example with a weak battery or jump-starting.

Electronic components age, and solder joints can become brittle. Moisture and corrosion attack plug connections and disturb the contact.

Voltage spikes arise, for example, when the battery is weak or a vehicle is started with jump leads. Which cause applies is clarified only by the inspection.

How can you tell that the A0285010217 is defective?

The airbag warning light in the instrument cluster stays on constantly or flickers. A fault message appears in the instrument cluster, the diagnostic tool cannot reach the control unit, and the fault memory remains. In an emergency, airbags and seatbelt pretensioners may then not be able to trigger.

The symptoms occur individually or together:

• Light in the instrument cluster that is lit or flashing
• Fault message referring to the airbag system
• No connection to the diagnostic tool
• Fault memory that cannot be cleared with the unit

Anyone who notices such a sign should have the fault memory checked.

Which vehicles is the A0285010217 fitted in?

The airbag control unit A0285010217 is fitted in these vehicles: Mercedes-Benz ML-Class W164 SUV (2005-2011); Mercedes-Benz GL-Class X164 SUV (2006-2012).

The assignment shows the vehicles stored for this number.

• Mercedes-Benz ML-Class W164 SUV (2005-2011)
• Mercedes-Benz GL-Class X164 SUV (2006-2012)

A comparison of the part number on the label with this page ensures that it is the right unit. The cause, by contrast, is clarified only by the fault memory, which you have read out before removal.

For the same vehicles, we also repair control units with the part numbers 1648209826, 285001535, 285001993, A 164 820 57 85, A1648204326, A1648204426.

How does the repair of the A0285010217 work?

Processing at Airbag24 usually takes 3–4 working days. First have the fault memory read out and attach the log, then disconnect the battery and remove the control unit. Then create a repair order online and send the well-packed unit in. Airbag24 checks it, renews defective components, deletes the stored crash data and carries out a function test before the unit comes back.

This period covers exclusively the work at Airbag24.

The removal takes place only after disconnecting, because that is how work is done on the restraint system. 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 A0285010217 get to Airbag24?

You send the control unit as a parcel or book a UPS collection for an extra charge. After the repair it comes back to you via UPS. Put the printed repair order in the parcel and pack the unit shock-proof.

A shock-proof parcel is the basis for transport.