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Ok, this one is a little out there. Have a 2007 S600. Sometimes the blower comes on, sometimes it doesn't. Doesn't come on sometimes with AC or heat set for max so rules out temp sensors. You'll be driving around and in 5-20 minutes it decides to do its thing. Or it will just work the minute you start your car. So researching this, it appears to be a "somewhat" common problem. They redesigned the blower so it has more protection from crap that falls through into the blower chamber and exposed motor. I've already decided to replace the blower. Fortunately it is a somewhat easy fix, as in not ripping the dash out. Just back breaking under the dash removal of a panel type thing. People have had success removing the blower and cleaning it out, works ok, etc. My luck with that is about zero, and the new improved blower is around $120 for basically OEM. So that brings me to the resistor. https://www.rockauto.com/en/catalog.../+resistor,6557 Seems quite simple on the inside, but the price is sort of ugggghhhh moment while I'm in there moment. Not sure if to spend the coin on that. Basically looks like a fancy starting capacitor to me.
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Jul 28, 2019 18:27
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C-Bangin' it 
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Motronic posted:I'm not sure how the hell that one works, but the old school ones are bypassed when the fan is on high - it's typically the easiest way to tell if the blow motor resister needs to be changed. Yeah, like I said...odd one. Is it the blower or a bulging cap? Around 13 years old. Housing looks like it is thermo welded on so a dremel and futzing with it all. One of those moments..."hey if it is $60 bucks no brainer" but like I said uggghhh.
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Jul 28, 2019 19:15
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