amnonbl

I have an 2008 GS300 (3rd generation). The entire row of buttons that controls the air conditioning, the rear window heating, the side mirrors heating and the front window heating is not functioning.
I replaced the entire media console and it didn't help. The problem is probably in the power supply to the part of the console that controls the heating/cooling system (since radio and touch screen are working).
Does anyone have an idea? Does anyone have the wiring schematics of the air conditioning system (including the controls)?

Thank you,

Amnon.