Airbag control unit with part number 670032407

What does the airbag control unit 670032407 do?

The airbag control unit 670032407 controls the restraint system (SRS) for Maserati. It evaluates the crash sensors, triggers airbags and seatbelt pretensioners within fractions of a second in an accident, and monitors the system continuously. After an accident it stores crash data and locks itself.

The manufacturer's part number Bosch 0285013272 is also printed on the housing. It helps with matching if you want to classify the unit more precisely.

The unit reports faults via the airbag warning light in the instrument cluster and stores them in the fault memory.

Why does the control unit 670032407 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed; a normal diagnostic tool cannot erase it. Other causes in brief: ageing of the electronics, cold solder joints, moisture and corrosion on connectors, and voltage spikes.

The crash data remains in the memory until Airbag24 removes it during the repair. A standard diagnostic tool cannot remove it beforehand.

The other causes in detail:

• aged electronic components
• cold solder joints
• moisture and corrosion at plug connections
• voltage spikes, for example from a weak battery or jump-starting

How can you tell that the 670032407 is defective?

A defect shows itself through the airbag warning light in the instrument cluster, which lights up permanently or only from time to time, and through an error message on the display. In addition, the diagnostic tool fails to connect to the control unit, or the fault memory cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then fail to trigger.

Other signs include the diagnostic tool being unable to reach the control unit. A fault memory that cannot be cleared also points to a problem.

Do not wait for the fault to resolve itself. The warning light announces the defect and gives you the signal that matters.

Which vehicles is the 670032407 fitted in?

For Maserati, the 670032407 appears in these vehicles: Maserati Quattroporte VI M156 Facelift (2016-2024) and VI M156 (2013-2016).

Below are the vehicles for which we have records of this number.

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

Two checks help, and they can be considered separately. First: compare the part number on the label of the unit with this page; this only confirms that you have the right unit in front of you. Second: read out the fault memory before removal, because only it shows whether the control unit itself is defective or whether a connector or cable is the cause.

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

How does the repair of the 670032407 work?

Before removal, you read out the fault memory, enclose the log and disconnect the battery. Then you create a repair order online and send the unit in well packed. Airbag24 checks the unit, repairs it if necessary and deletes the crash data; processing usually takes 3–4 working days.

The sequence has a reason: fault memory and battery come before removal. This keeps the work on the control unit traceable, and the log is available when the unit arrives.

At Airbag24, the bench test is followed by a functional test. After the functional test, your own unit is 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 670032407 get to Airbag24?

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

The repair order should be printed and placed in the box. When packing, make sure there is shock protection, because a well-packed unit arrives undamaged.