Airbag control unit with part number DA8A-57K30

What does the airbag control unit DA8A-57K30 do?

The airbag control unit DA8A-57K30 controls the restraint system (SRS) of Mazda. It evaluates the signals from the crash sensors and determines in an accident, within milliseconds, which airbags and seatbelt pretensioners are triggered. It shows faults in the system via the airbag warning light.

The unit checks the condition of the system continuously, even if you notice nothing of it.

If crash data has been stored, the control unit locks itself.

Why does the control unit DA8A-57K30 fail?

The most common cause is crash data stored after an accident, even if no airbag has been triggered; an ordinary diagnostic tool cannot delete it. Other causes are ageing electronic components, cold solder joints, moisture and corrosion on plug connectors, and voltage spikes.

A diagnostic tool finds the crash data but does not delete it.

Ageing components and damp plug connectors often do not stand out right away. Voltage spikes arise, for example, from a weak battery or when connecting to a jump-start.

How can you tell that the DA8A-57K30 is defective?

A defect shows itself through the airbag warning light in the instrument cluster, which lights up permanently or intermittently, through error messages in the instrument cluster, through a missing connection between the diagnostic tool and the control unit, or through a fault memory that cannot be cleared. Then airbags and seatbelt pretensioners may not deploy in an emergency.

The warning light does not hide the fault; it is the notice the system gives itself.

A single message alone is reason enough to check.

Which vehicles is the DA8A-57K30 fitted in?

The control unit DA8A-57K30 is fitted in these vehicles: Mazda Mazda2 DE (2007-2010) and DE Facelift (2010-2014).

An overview of the models:

• Mazda Mazda2 DE (2007-2010)
• Mazda Mazda2 DE Facelift (2010-2014)

Compare the part number on the label of the removed unit with this page; that alone shows that it is the right unit. More important is the fault memory, which you have read out in advance: it shows whether the control unit is defective or whether a plug or cable is behind the fault.

For the same vehicles, we also repair control units with the part numbers 2S6T-14B056-EN, DF73-57K30B, GC1M-57-K30.

How does the repair of the DA8A-57K30 work?

Have the fault memory read out and enclose the log before you disconnect the battery and remove the control unit. Afterwards create a repair order online and send the unit in well packed. Processing at Airbag24 usually takes 3–4 working days; during this time the unit is checked, defective components are repaired if necessary, the crash data is deleted and a function test is carried out.

The log is part of the submission, so that the finding is on record.

After the function test your own unit is returned. 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 DA8A-57K30 get to Airbag24?

You send the control unit DA8A-57K30 to us as a parcel or book a UPS collection for an extra charge. The return after the repair is made by UPS.

The printed repair order goes into the parcel, and the unit must be packed shock-proof.