Morning, the left side of my rear heated seat doesn't appear to work. The three lights come on for a few seconds then go off, and no heat. think the fuse is OK, but is there anything else I can check. Maybe cables underneath etc when it stops snowing on Easter Monday! 

I know eh.. First World problems 

A total wild guess is that the system is detecting no load so turning it back off.

Perhaps a multimeter across the connector under the seat to see if there is and resistance measurable on the seat element.

disconnect battery 1st (god knows why but scared to proffer any suggestions without safety 1st)