I recently purchased a 2006 a4 1.8t cab and love it so far. Unfortunately it didn't come with an owners manual. If anyone can tell me how to get ahold of one it would be greatly appreciated. On a recent trip, in the space where the dash shows the temperature, it changed to a reading of "2:00h" then changed to "4:00h" A day later it was back to normal but on the drive home it happened again. What does this mean?

Thanks for any info!