From Another Thread: Open the fusebox cover at the base of the drivers seat. At this point, you should see lots of fuses (if this is the case, things are going great

). Now, the fuses are all surrounded by a black rectangular casing. Run your finger over the top of this casing to clear away any dust and dirt. You should see a label there, on this label you need to look for a nice big H. If its there, let us know and I can post the next chapter on what to do

To be honest, if you have the heated seats you should definitely have the highline BeCM but best to check and let us know what you find