My 2005 X3 only blows air through the defrost vent. Doesnt shoot air through feet nor front traps!
3 Answers
Check to see that you didn't leave something un hooked. Sounds like you are having a mode door issue.
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https://www.bimmerfest.com/forums/showthread.php?t=503815 -- this probably not your issue but you might want to check it out.
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Your system does not use vacuum it uses electric stepper motors to control air flow. If one is unplugged then it defaults to defrost. Also same can happen if one fails.