Airbag control unit with part number A0285011819

What does the airbag control unit A0285011819 do?

The airbag control unit A0285011819 is the control element for the SRS restraint system in the vehicle of Mercedes-Benz. It evaluates the signals from the crash sensors, determines in an accident whether airbags and seatbelt pretensioners are triggered, and monitors the system continuously.

A detected fault ends up in the fault memory and appears via the airbag warning light. After an accident, the unit stores crash data and locks itself.

Why does the control unit A0285011819 fail?

Crash data from an earlier accident is the most common cause with the A0285011819, even if no airbag was triggered. The data cannot be removed with a normal diagnostic tool. Aged components, cold solder joints, moisture and corrosion at the plug connectors, and voltage spikes are also possible causes.

During the repair, Airbag24 erases the stored crash data.

Electronic components and solder joints are subject to ageing, and corrosion on contacts worsens signal transmission.

Voltage spikes occur, for example, with a weak battery or when a jump-start is connected.

How can you tell that the A0285011819 is defective?

A defect on the A0285011819 is recognised by the airbag warning light in the instrument cluster, which lights up permanently or intermittently. An error message in the instrument cluster, a missing connection between the diagnostic tool and the control unit, or a fault memory that cannot be emptied also point to a defect.

As long as the warning is present, airbags and seatbelt pretensioners may not deploy in an emergency. A prompt check is therefore advisable.

Which vehicles is the A0285011819 fitted in?

The part number A0285011819 is assigned to the following vehicle. The airbag control unit A0285011819 is fitted in these vehicles: Mercedes-Benz B-Class W246 (2011-2018).

The vehicle is shown here as an entry:

• Mercedes-Benz B-Class W246 (2011-2018)

First compare the number on the label with this page. This only confirms that it is the correct unit. The fault memory, on the other hand, shows whether the control unit itself is affected or whether a plug or cable is the cause, and it should therefore be read out in advance.

For the same vehicles, we also repair control units with the part numbers A 246 900 07 09, A246 900 75 02, A2469000809, A2469000903, A2469001003, A2469002313.

How does the repair of the A0285011819 work?

First have the fault memory read out and attach the log. Then disconnect the battery and remove the control unit. Then create the repair order online and pack the A0285011819 well before sending it in.

Airbag24 then checks the unit, repairs defective components, erases the stored crash data and tests the function. Airbag24 requires 3–4 working days as a rule for this.

You then 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 A0285011819 get to Airbag24?

The control unit A0285011819 reaches Airbag24 by parcel, or you book a UPS collection for an extra charge. The return after the repair is made by UPS.

Put the printed repair order into the box and pad the unit shock-proof.