Airbag control unit with part number DD33-14C246-AA

What does the airbag control unit DD33-14C246-AA do?

The airbag control unit DD33-14C246-AA belongs to the restraint system (SRS) of Aston Martin. It receives the messages from the crash sensors, calculates within a few milliseconds in the event of an impact which airbags and seatbelt pretensioners to trigger, and checks the system continuously.

It saves detected faults in memory and displays them via the airbag warning light. After an accident it stores crash data and locks itself; this lock only ends with the repair.

Why does the control unit DD33-14C246-AA fail?

Stored crash data after an accident is a typical trigger of faults with the DD33-14C246-AA, even if no airbag has deployed. Other causes include aged components, cold solder joints, moisture and corrosion, and voltage spikes.

Crash data stays in memory until it is deleted during the repair. A normal diagnostic tool cannot do this.

Ageing of components, cold solder joints and moisture in the plugs belong to the other causes, as do voltage spikes from a weak battery or a jump start.

How can you tell that the DD33-14C246-AA is defective?

A defect on the DD33-14C246-AA is shown by an airbag warning light that stays on, an error message in the instrument cluster, missing communication with the diagnostic tool, or a fault memory that cannot be emptied.

Typical signs at a glance:

• airbag warning light, permanently or intermittently
• error message in the instrument cluster
• diagnostic tool cannot reach the control unit
• fault memory remains after an attempt to clear it

In an emergency, airbags and seatbelt pretensioners may fail to deploy if the control unit is defective. Even brief warnings should therefore be taken seriously.

Which vehicles is the DD33-14C246-AA fitted in?

The DD33-14C246-AA is fitted in these vehicles: Aston Martin DBS VH (2007-2012); Aston Martin Vantage VH (2005-2017); Aston Martin V12 Vantage VH (2009-2018); Aston Martin Vanquish Mk2 (2012-2018).

The vehicles recorded for this part number are shown below.

• Aston Martin DBS VH (2007-2012)
• Aston Martin Vantage VH (2005-2017)
• Aston Martin V12 Vantage VH (2009-2018)
• Aston Martin Vanquish Mk2 (2012-2018)

Comparing the number on the label of the removed unit with this page only confirms the identity of the unit. The read-out fault memory shows which cause applies; a cable or plug is just as possible as the control unit itself.

For the same vehicles, we also repair control units with the part numbers 30773354, 30795181, 31295109, CG43-37-11330.

How does the repair of the DD33-14C246-AA work?

The starting point is reading out the fault memory, whose log is enclosed with the unit. Then disconnect the battery and remove the control unit DD33-14C246-AA, before you create the repair order online and send in the well-packed unit. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 checks the unit, replaces defective components, removes the crash data and tests the function.

The 3–4 working days apply only to this work at Airbag24. The unit then goes 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 DD33-14C246-AA get to Airbag24?

For the DD33-14C246-AA there are two options: you send it yourself as a parcel, or you book a UPS collection for an extra charge. It comes back via UPS after the repair.

Enclose the printed repair order and pack the control unit securely to withstand impact.