Vantage V8 sportshift and battery disconnect switch (BDS) problems

[cubaneels]

I own a 2007 Vantage V8 Roadster fitted with Sportshift transmission.

I recently disconnected the battery using “Battery Disconnect Switch” provided in the boot.

I then followed the reset instructions in the manual.

The instrumentation display showed that the car was in neutral, however, when I started the engine the car lurched forward..

A technician was sent by the dealer. When he tried the same sequence the car lurched backwards, despite the instrumentation once again indicating that it was in neutral. He carried out a hard reset several times by physically disconnecting the battery. The results were similar, with the car randomly going into a gear unrelated to that displayed.

The car was transported to the dealer who installed new software which rectified the problem.

Aston Martin themselves maintain that it was a mechanical fault not a software matter.

Has anyone else experienced a similar problem?