Airbag control unit with part number 30010435/09

What does the airbag control unit 30010435/09 do?

The 30010435/09 works as the control unit of the restraint system (SRS) in vehicles of the make MG. It processes the readings from the crash sensors and determines in a fraction of a second in the event of an accident which airbags and seatbelt pretensioners are triggered.

The unit constantly checks the connections and components of the system. If it detects a fault, the airbag warning light in the instrument cluster comes on.

After an accident, the control unit stores crash data and locks itself. This state is important when removing and sending the unit, because the crash data is part of the repair.

Why does the control unit 30010435/09 fail?

The most common cause for the 30010435/09 is crash data stored after an accident, even if no airbag has triggered. Further causes are aged electronics, cold solder joints, moisture and corrosion, and voltage spikes.

A normal diagnostic tool cannot erase this crash data. Airbag24 removes it during the repair.

Aged electronic components, cold solder joints, and moisture and corrosion at plug connections can lead to loose contacts.

Voltage spikes arise, for example, from a weak battery or from jump-starting, when the vehicle's electrical system briefly fluctuates strongly.

How can you tell that the 30010435/09 is defective?

The airbag warning light in the instrument cluster lights up on the 30010435/09 permanently or intermittently, and an error message appears in the instrument cluster.

In addition, a diagnostic tool cannot connect to the control unit, and the fault memory cannot be cleared. If either of these applies, it is a clear sign of a fault in the airbag system.

During a fault, the airbags and seatbelt pretensioners may not trigger in an emergency. So do not put off the check.

Which vehicles is the 30010435/09 fitted in?

The 30010435/09 is fitted in these vehicles: MG 3 1st generation (2013-2024).

The following list shows the vehicles that are recorded for this control unit:

• MG 3 1st generation (2013-2024)

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

For the same vehicles, we also repair control units with the part numbers 10104458/01, 10169028/01.

How does the repair of the 30010435/09 work?

First, have the fault memory read out and attach the log. Only then disconnect the battery and remove the 30010435/09.

Then create a repair order online and send the unit in well packed. Airbag24 checks it on the test bench, replaces defective components, erases the crash data and carries out a function test. Processing usually takes 3–4 working days. After that, your own unit is sent 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 30010435/09 get to Airbag24?

You send the 30010435/09 to us as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns the unit to you by UPS.

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