Product review (5 stars): Bosch moisture sensor is called temperature regulator
My autoshutoff on my Bosch dryer WTA 3500 UC/10 wasn't working, but timed drying was fine. Still wouldn't work after cleaning out all the venting and wiping down the stainless steel strips in the drum with vinegar. Finally was advised at a hardware store that it was the moisture sensor, which is called, misleadingly, the temperature regulator. I found the sensor, readily accessible in the air inlet below the door on the right side, the metal part sticking out of the machine. I wiped it down with vinegar and now I got auto.