HEATED SEAT INOP

[EUROPEANLOVER]

Loving the X for the past 7 years but seems for the past 2 months minor things are failing every week to 2 weeks. Drivers heated seat won't come on. Takes awhile. Push button, all three bars light up for a millisecond. Twice when I moved the seat in a different position, I was able to put it on. Tried that today and it didn't work. On my drive from church to Olive Garden today, about a 25 minute drive, tried everything. Wouldn't come on. My wife's butt is nice and toasty on the drive while she's rubbing it in that I don't have my heat. I told her just wait until we switch cars one day. Let's see if it's funny then. LOL!!!!!!
Anyway, when we got to our destination, I push and hold the button one more time. BAM!!!!! I have heat. What's the use, I'm getting out of the car now. Lol
What should I be looking at? Switch, seat elements or module if it has one. I'm a GM tech, 95 percent of the time it's our modules or a burnt ground at the module and circuit. Any help greatly appreciated. Is this a common thing for the X. For the heated seat to start acting up?

[puddinboo]

could be as simple as a broken wire

[upallnight]

Probably the relay which is separate from the passenger side seat.

[EUROPEANLOVER]

I have a 2003 X5 3.0. Where is the relay?