I do not have an owner's manual for my 2006 XJ8L and would love to have one, but for now wondering if someone could send a picture of the fuse layout of the passenger fuse block, specifically where the seat heater fuse is ? Thanks You,ED

 

Hi Ed,

The front seat heater fuse is actually in the rear fuse box located RHS in spare tyre well.
Fuse 47 20 amp.
Just fixed my seat heaters and found it was actually a system relay (R5) that was my issue. If you have lost your high stop brake light and some of your rear light light cluster's operation, then you might have a embedded relay issue instead.
Hope it is the fuse for your sake.....replacing the relay is a real PITA.

 

Thank You sir, I do appreciate your quick and helpful response. ED