I posted this under the thermostat thread but thought it would be worthwhile making a new thread for this. I had planned on changing my thermostat, due to running low temperatures, when my work schedule got a bit quieter. Interestingly, I called BMW Seattle today to book my X5 in to get the faulty DeNox reading fixed (hopefully under CA emissions) and to my surprise the lady on the phone said my vehicle had an open recall on a faulty thermostat. Mine is a 2012 X5d. Maybe some of you have the same open recall. I was very relieved to say the least, it saves me the hassel of doing it myself.