Hi, can anyone here tell me the exact location of the thermal fuse S44 in the supply line to the electric seats of my Superb 2013?

Labelled B above.

Thanks a lot! But where is this in the car?

In a LHD car (steering wheel on the left) it is somewhere just above your left foot when driving.

Onboard control unit is often called 'BCM'.

Thanks again. I know where you mean!