Default Bluetooth car integration voice dial...

Hi,

I have a Moto G and I would like to use it with my Audi A3 bluetooth kit (This is a kit that I rewired from another car to work with mine, nothing too complicated). It includes a single button on the dash that should answer calls, end calls, voice dial and redial last number (long press).

This worked great with my iPhone 4, not so well with my Moto G. The system answers incoming calls, redails and ends calls. But I cannot get the voice dial working very well.

I have tried using bluetooth launch to point at specific voice dialling applications, but it cannot work from the lockscreen. Also, the stock voice dialler is flaky at best, and requires google now to be open on the phone.

Any suggestions welcome please...

Thanks,
Rich