Airbag control unit with part number 670036909

What does the airbag control unit 670036909 do?

The airbag control unit 670036909 is the central control unit of the restraint system (SRS) in Maserati. It evaluates the crash sensors, decides in a crash within milliseconds whether airbags and seatbelt pretensioners are triggered, and monitors the system during operation.

The unit reports faults via the airbag warning light in the instrument cluster. The manufacturer number Bosch 0285013574 is additionally printed on the housing.

After an accident, it stores crash data and locks itself.

Why does the control unit 670036909 fail?

The most common cause is crash data stored after an accident, even if no airbag was triggered. Further causes are aged electronic components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes.

A normal diagnostic tool cannot erase crash data; Airbag24 takes care of this during the repair. Ageing and solder joints affect the electronics directly, whereas moisture at the plugs tends to come from outside.

Voltage spikes arise, for example, from a weak battery or a jump start and can strain the components.

How can you tell that the 670036909 is defective?

A defect shows on the airbag warning light in the instrument cluster, which lights up permanently or intermittently, possibly accompanied by an error message. If the control unit cannot be connected to a diagnostic tool, or the fault memory cannot be cleared, that is also a sign. Airbags and seatbelt pretensioners may then fail to trigger in an emergency.

The airbag warning light is the clearest sign in the instrument cluster. If it lights up, have the system checked, even if the car still drives normally.

You therefore recognise the condition from the warning light, from the message in the display, and from a failed diagnostic procedure.

Which vehicles is the 670036909 fitted in?

The control unit 670036909 is fitted in these vehicles: Maserati Ghibli M157 (2013-2024); Maserati Quattroporte VI M156 Facelift (2016-2024) and VI M156 (2013-2016).

The list of vehicles on record follows here.

• Maserati Ghibli M157 (2013-2024)
• Maserati Quattroporte VI M156 Facelift (2016-2024)
• Maserati Quattroporte VI M156 (2013-2016)

Two steps make the assignment reliable. Compare the part number on the label of the removed unit with this page, which only confirms the right unit. In addition, have the fault memory read out, because that result alone shows whether the control unit or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 285011809, 670007061, 670101609, 670101610.

How does the repair of the 670036909 work?

Processing at Airbag24 for inspection, repair and testing usually takes 3–4 working days. Beforehand, have the fault memory read out and attach the log, disconnect the battery and only then remove the control unit. Afterwards, create the repair order online and send in the unit.

Airbag24 examines the control unit on the test bench, repairs the faulty components rather than replacing the unit, erases stored crash data and carries out a function test.

The unit you sent is returned to you, not a different one.

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 670036909 get to Airbag24?

You hand in the control unit as a package or book a UPS collection for an extra charge. After the repair, you receive it back by UPS.

Enclose the printed repair order and pack the unit shockproof.