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"Defroster button" --How mine works (more) (archive)

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Posted by CFL on May 10, 1999 at 14:49:13:

In Reply to: "defroster button?"--never heard that before (eom) posted by Steve on May 10, 1999 at 11:47:54:

At least this is how I understand it works. My car is a 5/94
production date 95 M3. The heated mirrors will turn on when I
use the *rear* defrost button. I'm not sure what the _front_ defrost
button is on a 98, does it activate the A/C to get rid of condensation?
Then again I have round dials the way God intended them to be,
not the fancy schmancy automatic climate controls and doodads
that you newer M3's have (grin). My mirrors feel warm to the touch
when they're on, it's nice because it will dry the rain droplets and the
outside temp is nowhere near the 37 degree mark.

Also as far as I know what happens at 37 F is the windshield washer
nozzles begin to heat up. That's what the sensor on your right
brake duct is for. The one on the left brake duct is to indicate
outside temperature on the check control panel. My car has the
check control/outside temperature/clock panel not a full OBC like
the 96+ cars have.

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