My question is in regard to the mixing dial located in the middle of the center dashboard vent. I'm referring to the dial with the blue and red dots.

When I move mine to the coldest position it does not stay put. It always rolls back a bit. Sometimes more than others. Dealer replaced the vent and it has not improved. Now the dealer claims this is normal.

I had a 330ci that did not do this.

What does yours do?