Yeah, I went on a trip recently and had a travelling mug sitting in the cup holder. I started to hear an intermittant beep and got really concerned that I was experiencing the start of some dreaded Disco electronics problem. After too many kms of trying to diagnose the problem I worked out the mug was pushing on the climate control button and it was that beeping at me. I was very relieved to work it out but then realised I couldn't use the cup holder for my mug of tea. Cheers.

