Two times, in the last 15 mths, the ac / heat doesn't go on but the next day it’s fine. Last night ac was fine after 30 min in the store it was only blowing @ (?) 1/2 power then within 3 blocks full power just kicks in (that happened for the 1st time last night!) I have a 2001 BMW 325i with 96,000m and the ‘service engine soon’ light has come on, went off for two mths & is now on again. Other than the screw I picked up in a tire my car runs great (I don’t drive it every day – couple of times a week). 1 other quickie; hot day, keys locked in running car a little over 1 hr, if your thermostat is bad what happens to the car? Thanks, I hope you can help. MJ (It’s going in for at least the fluids changing as soon as I find the right place!)