enigma-2 Posted November 12, 2014 Report Share Posted November 12, 2014 (edited) One quirk I have with my new 09 MKX is the auto dimming mirror. It gets dimmer with rear headlights OK, but it never really goes back to being completely bright during the day (unless I put the car in reverse). I can get it to go completely "bright" (100% non-dimmed) by manually compensating (and it goes completely clear), but afterwords slowly fades to about 30-40% dimmed position. (Also turning on either map light causes it to dim). Is this normal; does everyone else's operate this way, or is mine defective? Edited November 12, 2014 by enigma-2 Quote Link to comment Share on other sites More sharing options...
omar302 Posted November 13, 2014 Report Share Posted November 13, 2014 Check that the rear sensor (behind the mirror) is clear & not blocked. It is supposed to measure the ambient lighting to determine when its daylight so that the mirror does no dim & when its night the mirror would dim. For the map lights, during the night (or rear sensor blocked), yes, the map light will cause the mirror to dim. But during daylight they the mirror will not dim. Quote Link to comment Share on other sites More sharing options...
enigma-2 Posted November 14, 2014 Author Report Share Posted November 14, 2014 Thanks, I'll check it tomorrow. Quote Link to comment Share on other sites More sharing options...
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