BENZMAC:
I am looking at the aux fan schematic, and are you referring to S32 ( refrigerant High pressure switch) as the small blue switch?

The diagram says that this switch is closed
20 BAR/ Open 15 BAR. What does this mean, how can i test if this switch is bad?

Do you know exactly where this switch is located at?

thx
emmy mendoza
91 560SEL