1988 W124 is blowing A/C air out the defrost vents when the control is not set to defrost. So far I think I understand the problem: bad defrost flap element. My indy also spotted that while doing some evap/drier work and suggested fixing it, but estimated $800 because the dash needs to be removed (labor intensive) to complete the replacement. I've always been under the impression that the defrost flap and footwell flap elements are accessed through the glove box, and don't involve removing the dash. Am I mistaken?

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1988 California version 260E (W124)
Anthracite Grey/Palomino
Owned since new and still going strong and smooth
MBCA member

Past Mercedes-Benz:
1986 190E Baby Benz
1967 230 Inherited from mom when she downsized
1959 220S Introduced me to the joys of keepin' 'em goin'

There are only 10 kinds of people in the world--those who understand binary and those who don't