I have the cde-9843 and I get error codes sometimes when playing MP3 discs. Even though it gets plenty cold in Boston, I don't think the error message has to do with the temperature, probably has to do with the discs themselves.
Other than that, I love the Alpine - it is the clearest and best sounding car stereo I've ever had or heard. And I love the way it looks - clean and streamlined. I just wish I had bought one with an auxilary input.
(I have a simple system - the Alpine 9843 paired with the 3 way Pioneer speakers up front and the 2 way Pioneers in back.)
