Dear Experts,
I have 1 560SEL 1991 (W126) and 1 S420 1994 (W140). Both cars have heated seats problem, the light on the switch are on when I press it but there is no heat on the seats.
For my 1991 560SEL, I just replace the fuse, this fuse is flat fuse outside the fuse box but very close to it toward the front of the car... Then it comes back to normal. Now my 1994 S420 have the same problem but I can not locate this fuse, is there any fuse like this for W140 car and where is it located?

Thanks,