993 question - what does that defrost button do?

[Chuck.H]

I'm looking at a picture of the 993 HVAC controls, and I see a defrost button that has a windshield looking picture on it... does this work like modern cars, ie heat + AC + max fan + vents upward?

I have a friend with one (with a broken switch) just trying to understand its function. When he first mentioned it, I assumed it was for the rear window, but he insists it's for the front defrost, and he uses it often.

TIA,
Chuck.H
'89 TurboLookTarga, 437k miles

[Bill Verburg]

I think that its just max heat + max fan + blowing through the dash window vents

[Chuck.H]

Thanks Bill - It looks like the switch is available separately, do you know if the entire HVAC control module has to be removed to swap it out?

Chuck.H
'89 TurboLookTarga, 437k miles

[Bill Verburg]

Originally Posted by Chuck.H

Thanks Bill - It looks like the switch is available separately, do you know if the entire HVAC control module has to be removed to swap it out?

Chuck.H
'89 TurboLookTarga, 437k miles

Dunno, the only thing I ever did was pull the whole dash module to clean the fan in back