Heated front seats E53 2005

[TAIX5]

Hi All

Brought a X5 2005 which is suppose to have heated seats, the buttons are present in the front, but when pressed nothing happens no lights. I have checked the fuses and they are present and look OK according to the fuse layout diagram in the glove box. Other than that can anyone else point me to where else one would look to see if they are actually installed. I looked under the seat but apart from the electric motors I couldn't really tell what else to look for. The driver seat is memory as well.

Any ideas would be appreciated.

Thanks