Join Date: Sep 2017
Location: New York NY
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I had same noise. Exact same noise. The blower fan is my source. Easy to take out if you know how. 5 min to take off, 5 min to put back in. Took mine off dusted it off, oiled it up. My plastic fan has a crack in two places, but I put in back in. No more noise and the air blows fine. I also checked my cabin air filter I but dusty for being a year and a half old. Now due to cracked plastic fan speed 1,2,3 and 4 are fine. speed 5 the fan must expand and contacts the outer housing and that makes a noise.
Ill try the cheapest thing first..... Never use fan speed 5 ...lol.
Second, when I change the cabin air filter I will take the blower out again and glue the cracked area.
Third, get a new blower or if doable just a plastic fan replacement. So I will be on the look out for one. My buy in desire is $75.00 if I run in to one at the price i will get it.... if not speeds 1 -4 only lol.
Not a big deal fix. for your car just drive the car around with the blower off and insure the car is fine other than this blower noise.
Your Smart is not critical juts read and watch videos on how to remove the blower fan and cabin air filter.
Last edited by twcom; 06-26-2019 at 10:54 PM.