what is????
 

what is the button on the cca closest to the defrost? it has a red light on the bottome and a arrow circle on top.....then....

when i turn defrost on in the morning, it goes click click click and will cut the blower off.....

1987 420sel....any ideas?

lyle

It is an air recirculation button, stops the system from drawing in outside air if you are driving through a tunnel or through a forest fire or something like that. Don't think it should click or shut off your blower though...