Airbag control unit with part number 97128002

What does the airbag control unit 97128002 do?

The airbag control unit 97128002 coordinates the restraint system (SRS) for Aston Martin. It evaluates the signals from the crash sensors and, in an accident, decides within milliseconds on the triggering of airbags and seatbelt pretensioners. After a crash, it stores crash data and locks itself.

In addition, it monitors the entire system and reports faults via the airbag warning light. The light in the instrument cluster is the visible sign to the driver that something in the system is wrong.

Between accidents the unit works unobtrusively, because sensors and actuators need continuous monitoring.

Why does the control unit 97128002 fail?

With 97128002, the most common cause is crash data stored after an accident, even without a triggered airbag; a normal diagnostic tool cannot erase them. Further causes are aged electronics, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Airbag24 removes the crash data during the repair, so that no old entries remain in the memory afterwards.

The other causes lie in components and connections. Solder joints can give way, components age, and moisture reaches the plugs. Voltage spikes, for example from jump-starting, add further strain to the electronics.

How can you tell that the 97128002 is defective?

The most noticeable sign is the airbag warning light in the instrument cluster, which lights permanently or intermittently with 97128002. Added to this are a fault message in the instrument cluster, a lack of contact between the diagnostic tool and the control unit, and a fault memory that cannot be cleared.

In an emergency, airbags and seatbelt pretensioners may then fail to trigger, so a prompt check is advisable.

• warning light that is on or lights up intermittently
• fault message in the instrument cluster display
• no communication between diagnostic tool and control unit
• fault memory that cannot be reset

Which vehicles is the 97128002 fitted in?

The control unit 97128002 is fitted in these vehicles: Aston Martin DB11 VH2 (2016-2023).

The same make does not mean that the unit is the same. Model year, equipment and engine variant also decide the assignment.

Here is the overview:

• Aston Martin DB11 VH2 (2016-2023)

The label of the removed control unit is compared with this page. It confirms that it is the right unit. Whether the control unit is defective or a plug or cable is the cause is established only by the fault memory, which you have read out beforehand.

For the same vehicles, we also repair control units with the part numbers 97128004, HY53-14C246-AC, HY53-14C246-AD.

How does the repair of the 97128002 work?

The first step is reading out the fault memory. Then disconnect the battery, remove the control unit 97128002 and create a repair order online before you send it in. Processing at Airbag24 usually takes 3–4 working days.

Enclose the protocol with the unit and pack it well. At Airbag24 the unit is examined on the test bench, defective components are replaced, the crash data are erased, and a function test follows.

The order of steps is binding for safety reasons. 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 97128002 get to Airbag24?

You can send the control unit 97128002 in as a parcel, or arrange UPS collection for an extra charge. Its return after the repair is likewise by UPS.

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