I have a volvo v40 t5 r design and I am experiencing problems with my stop start. Everytime my stop start kicks in at the start of a journey I lose all sound through my infotainment system eg no reverse beeps or any sound from music. This does rectify its self if I turn the vehicle off then on again. It only happens when the start stop is active. If I forget to deactivate my s/s on a long journey I have no music or alerts. Any help on this would be greatly appreciated.