[Robstokie1974]

Hi, fairly new 330e, rear sensors have stopped giving me the acoustic warning, fronts are ok and they show up the objects in the reversing camera, but no sound, turned the volume up to full, no sound, any ideas anyone, thanks

[MisterG]

Try rebooting the idrive - hold down the volume/power button for 30-sec.

Ive had similar issues in the past where the noise has stopped or changed volume... usually it starts working again on the next trip.

[Robstokie1974]

I did also read in another forum that they dont make a sound unless its actually an obstruction that you could hit, but just show its there, i'm coming from a VW that beeped at everything