Started having problems with the ambient temperature sensor not working. Sporadically showing a temperature that's completely wrong, sometimes just empty bars (---°F) and today, nothing at all. It's sad but it's been nearly 5.5 years and this is the first electrical problem showing up on the car (other than the charging system TSB that under-charged the battery). Ordered a new sensor and will being doing a little disassembly to try to figure it out. I have a feeling that it's got a short or resistor burned up. I'll update when I break everything open in the near future.