I just lost all coolant in my 2007 XK Coupe. I was on the freeway and all hell broke loose with warnings. Had it flat bedded home. NOW, where do I start to look for the problem? There were no leaks prior and coolant was at correct levels. I would appreciate any help from all the smart people here. Thanks.

 

Other than to just look for a leak, you could fill the system with straight water and then pressurize it using one of those pressure cap things. If it blew as you say, it should be a pretty obvious leak and easy to find.
Your car wasn't spewing white smoke by any chance, was it?
Also check your oil, make sure it doesn't have any frothy brown in it. That'd be way bad. The dip stick would be sufficient. 100% oil would be good.

 

Thanks for the quick reply. Pretty much what I plan on doing tomorrow. Just asking so that I might concentrate looking in particular places. I just hope that I didn't drive it too far trying to find an exit off the freeway.

 

Remove the cover over the center top of the engine. A small hose that leaves the coolant tank for the top center of the engine, has a simple connecter that falls apart with age. I replaced it with a 3/8" copper plumbing tube. I now have a temp gauge connected to my OBD2 plug.