The warble volume I reckon is set at the navigation volume so you can adjust that via the screen or the quick way I use which is press the right button in on the steering wheel which gives the voice navigation instructions again for where you are (assuming you have set a destination in, that's a useful trick in its own right), adjust the volume with the left control and that should be it.Been for a run out and I can confirm that the warble does work if you have anything other than the Sat Nav in your screen. As long as the Speed Cameras are selected as POI’s on your map you will be informed by a warble.
One thing I would like is to be able to increase the warble sound independently of the radio or other music input. If anyone (Tell, I’m looking you lol) can figure this out I’d be in their debt.
For those not sure about doing the upgrade it’s well worth it, could just save you from a ticket and fine.
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