Airbag control unit with part number A9064460842

What does the airbag control unit A9064460842 do?

The airbag control unit A9064460842 is the central control unit of the restraint system (SRS) for Mercedes-Benz. It evaluates the impact sensor signals and, in an emergency, decides within milliseconds whether airbags and seatbelt pretensioners are triggered. It reports faults via the airbag warning light.

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

The housing also carries the manufacturer number Bosch 0285010034. It supplements the part number and only serves to identify the component.

Why does the control unit A9064460842 fail?

The most common cause is stored crash data after an accident, even if no airbag has deployed; a normal diagnostic tool cannot erase it. Other causes are aged electronic components, cold solder joints, and moisture and corrosion at plug connections.

Airbag24 removes the crash data during the repair. Common tools cannot erase it.

Voltage peaks are another cause, for example from a weak battery or a jump start. Such loads affect the electronics over a longer period.

How can you tell that the A9064460842 is defective?

The airbag warning light in the instrument cluster stays on permanently or intermittently, an error message appears in the instrument cluster, the diagnostic tool finds no connection to the control unit, and the fault memory cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then fail to trigger.

The light shows the fault as soon as the system detects a malfunction. It is worth looking at the instrument cluster after starting the vehicle.

A prompt check will quickly establish the condition of the restraint system.

Which vehicles is the A9064460842 fitted in?

The airbag control unit A9064460842 is fitted in these vehicles: Mercedes-Benz Sprinter W906 (2006-2018).

The vehicles for which this unit is listed are shown in the overview below.

• Mercedes-Benz Sprinter W906 (2006-2018)

Compare the part number on the label of the removed unit with this page. This only confirms that you have the right unit. Have the fault memory read out beforehand, because only this log shows whether the control unit is defective or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 000 446 06 42 (06), 0285010349, 0285011060, 285010054, 285010349, 285011400.

How does the repair of the A9064460842 work?

First have the fault memory read out and attach the log. Then disconnect the battery and only afterwards remove the control unit. Create the repair order online and send the well-packed unit in. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 tests the unit on the test bench and replaces defective components. Airbag24 then erases the stored crash data and carries out a function test.

Your own unit is then 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 A9064460842 get to Airbag24?

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

Put the printed repair order into the parcel and pack the control unit shockproof.