Airbag control unit with part number DD43-14C246-AA

What does the airbag control unit DD43-14C246-AA do?

The airbag control unit DD43-14C246-AA is the central control unit of the SRS system in Aston Martin. It evaluates the crash sensors and decides in a crash which airbags and seatbelt pretensioners trigger.

The decision is made within milliseconds. The unit also monitors the complete restraint system and reports faults via the airbag warning light in the instrument cluster.

After an accident it stores crash data and locks itself. The lock ends only with the repair.

Why does the control unit DD43-14C246-AA fail?

The most common cause is stored crash data on the DD43-14C246-AA, even when no airbag fired; a common diagnostic tool cannot reach this data.

The remaining causes lie in the electronics itself: components age, solder joints may have become cold, and moisture or corrosion affect plug connections. Voltage spikes, for example from a weak battery or from connecting a jump start, additionally stress the control unit.

At Airbag24 these entries disappear during the repair, because they are erased in a targeted way.

How can you tell that the DD43-14C246-AA is defective?

A defect in the DD43-14C246-AA shows up through the airbag warning light in the instrument cluster, which lights up constantly or intermittently, and through a fault message in the instrument cluster. A diagnostic tool without a connection to the control unit or a fault memory that cannot be erased also indicates a defect.

These signs occur individually or together:

• airbag warning light that lights up constantly or intermittently
• fault message in the instrument cluster
• no connection between the diagnostic tool and the control unit
• fault memory that cannot be erased

A defect is therefore not hidden, but indicated by the warning light. As long as such an indication persists, airbags and seatbelt pretensioners may not be able to trigger in an emergency.

Which vehicles is the DD43-14C246-AA fitted in?

The control unit DD43-14C246-AA is fitted in these vehicles: Aston Martin Rapide VH (2010-2020). The information is based on the assignment stored on this page.

The models can be taken from the following list:

• Aston Martin Rapide VH (2010-2020)

Comparing the part number on the label of the removed unit with this page only shows that it is the right unit. Only the fault memory, which you have read out in advance, can clarify whether the control unit is defective or a cable is the cause. Please have it read out beforehand.

How does the repair of the DD43-14C246-AA work?

At the start, the fault memory is read out, and you enclose its log in the parcel. Then disconnect the battery and remove the control unit DD43-14C246-AA before you create the repair order online and send the unit in. Processing at Airbag24 usually takes 3–4 working days.

At Airbag24 the unit is checked, defective components are replaced, the stored crash data is erased, and a functional test is completed.

Afterwards your own unit 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 DD43-14C246-AA get to Airbag24?

You send the control unit DD43-14C246-AA as a parcel, or you book a UPS collection for an extra charge. Airbag24 returns the unit to you by UPS after the repair.

Enclose the printed repair order in the parcel and pack the unit shock-proof.