I just used the heated wheel in my 2012 35d for the first time this past week. Mine gets very warm, very quickly,all around the circumference (ironically a little less warm / little more slowly at 3 and 9). I have sport activity package with larger rimmed steering wheel, although not sure that matters.

In use, I turn on when I start the car to "take the edge off" the cold leather, then switch it off - so no idea how it behaves if I were to leave it on...


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