I purchased a used 1998 XK8 and drove from Hilton Head to Greenville SC with no issues at all. Today I let my son drive it around the neighborhood and when pulled into driveway I noticed smoking under hood and the electric fan wasn’t working. It smoked for 15 minutes and smelled like Ellen. Now car is completely dead and nothing works, no power at all. Any ideas?

 

What's the battery voltage? My guess would be something shorted and you have a dead battery.

 

I know this is tedious, but start by checking your fuses, including the big ones in the High Power Protection module in the boot.

http://jagrepair.com/images/AutoRepa...tionModule.jpg

You will need to identify what shorted out before replacing any fuses.