For years now we have had a terrible fan noise when the heater is engaged, and it's NOT the main blower motor. Finally, I found out about the Sampler Blower Motor, or Blower Sampler motor, part # 0 130 002 802. This component is not listed on the fuse panel, but feeds off of fuse #1. I've got to get to this motor, at least to unplug it, if not replace. Does ANYONE know where it is, or how to get there?
For those of you chasing a mysterious fan noise--yes, there is more than one fan in the car. And No, not everything is listed on the fuse box cover.