Bought my 1988 240 in the summer and took the car into the mechanic last week to see if he could get the seat heaters working. He's supposed to be really good and pulled the seat cover back with the seat in place, exposing the seat heater mat. He said he expected to find a detached wire from the thermostat, but it was okay. He then turned the seat heater on and claimed they were working, but in touching the pad I felt the slightest heat (I think) but otherwise virtually nothing. I can well imagine that it's impossible to feel anything through the 1/4" foam and cover when it's back on the mat. He said that it's not the same as my seat heater in my S80 (which is great) and that it's not a heat pad either. He said that's the way they are, but that leaves me and my wife pretty disappointed. Honestly, can't feel anything. Is this the way they are, or is my mechanic wrong and I should look into something else?? Thanks, Fred