I've got a 2005 450 which has been operating fine until a couple of days ago. After being parked outside in a heat wave, I couldn't get it to go into gear. In fact, I haven't been able to since then.
This is what happens: the car starts normally, then when attempting to shift into 1st, I hear 10 slow thumps, then I get three dashes. After that I can no longer attempt to go into 1st. However, I can attempt to go into reverse (with the three dashes still displayed), where I'll hear 8-9 much louder and quicker thumps. I can only do that once as well before I have to restart.
Am I in some kind of strange mode? This literally happened while the car was parked - it was operating perfectly before then. I'm quite far from a dealer so any advice that can get me back on the road (even in limp mode) would be appreciated.