My sat nav wheel stopped working about 2 weeks ago, also at about the same time I stopped getting audio prompts from my Scala rider 4 , could one affect the other? The sat nav is Nav 5. Also cannot now connect my phone The Nav still shows the route but in silence, all the settings volume ,Bluetooth, are enabled on the Scala and the phone and Nav 5. Is there a reset on the Nav 5 ?

. Still got no sound on the Nav 5 though. Looks like the Scala 4 is the problem there. I will try to swop from the other helmet to see if that fixes it.