So believe it or not the cancel button under the navigation screen isn't responding at all.

It's not big deal because I have been using the back button on the steering wheel. But now I want to get into diag mode and I can't.

Anyone ever had a problem with the cancel button?

 

Yep. I have the same issue and I think others do too, it's been mentioned.

I also have issues with the zoom out buttons too and it is linked with the toggle control. If you play with things here and there, it starts working all of a sudden. Then there are rare moments when everything works just fine. These issues first appeared overnight like 3yrs ago and has been the same ever since. It's not the kind of thing that started slowly and got worse, it's just persisted. I'm glad this doesn't affect major functioning of the whole system and I can get it to work in most ways but it is still weird and quirky and shouldn't be happening.

The fix? No clue, besides replacement. Not worth it to me.