ECS not working

I think my ecs is not working, i push the button but nothing happens, is there supposed to be a light that comes on, or what. And does the SL have active exhuast or just VR-4's.

Only TT's have active exhaust

There is a sport/tour mode light for the ECS in the cluster. If you have no light then assume the the system is not working and that the dampers are set to sport mode.

with the key in the on position, but the enging off, do you hear anything at all when you press it? you should hear a quick electric servo type sound. if not, then it's not working.
Check the harnesses on top of the struts and the ECS computer in the hatch.