I have had two VW with the sensors, both in snow storms or melting snow or rain on the roads the acc will turn off if the sensors get covered. No big deal because you shouldn’t be using cruise anyway.Do you mean the front radar sensor and the windshield-mounted camera? I've had a couple vehicles with radar ACC and have never had an issue with the radar sensor needing cleaning (not even during snow conditions). The windshield-mounted camera sits within the arc of the windshield wipers, so you just need to use your windshield washer if you need to clean that part of the windshield. But again, never specifically had an issue with that camera on other vehicles.