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      12-14-2016, 03:53 PM   #1
LevinBR
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Heater Squeal When Braking

When I am braking with my heater on, I hear a squeal coming from my vents. It only seems to happen when the heater fan is set on low (1/5 or 2/5).

Has anyone experienced this and does anyone know how to fix it?

Thanks!
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      12-14-2016, 03:56 PM   #2
kiloTHREE
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Does it happen at high speed braking (ie 70 to 40)?
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      12-14-2016, 04:00 PM   #3
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Quote:
Originally Posted by kiloTHREE View Post
Does it happen at high speed braking (ie 70 to 40)?
I have not tried/payed attention to high speed braking yet. Will give it a shot soon.
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      12-14-2016, 07:37 PM   #4
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Sound like cricket chirps? What year is your X1?

Probably early signs of blower motor resistor wanting to go
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      12-14-2016, 10:24 PM   #5
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Quote:
Originally Posted by DUI Elite View Post
Sound like cricket chirps? What year is your X1?

Probably early signs of blower motor resistor wanting to go
Yes it does sound like cricket chirps! It's a 2013.
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      12-16-2016, 07:23 AM   #6
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Quote:
Originally Posted by LevinBR View Post
Yes it does sound like cricket chirps! It's a 2013.
Yeah likely blower motor / blower motor resistor if it happens at only a few fan speeds

I'd wait until you lose a fan speed altogether to replace anything unless it really bothers you that much. You'll notice it gets progressively louder when its colder out, but will (likely) be just fine when its warm outside
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      12-16-2016, 10:11 AM   #7
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I've had the same issue for 3 years. It doesn't matter if its cold or hot out. Mine will just make noise intermittently..even under warranty the dealer said no problems found.... YAY german cars.

Might want to check out the cabin filter area and vacuum all the leaves/debris out. I did this once and it helped a lot.
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      12-16-2016, 11:28 AM   #8
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How difficult is it to get to the blower motor?
It doesn't look to bad on a E9x, should be about the same no?
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      12-19-2016, 05:34 PM   #9
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Yup, mines been doing this since ~38k miles. Only during Fall/Winter though. The fans go bad, I don't see any reason to replace the resistor due to this squeal.

My friend's Audi does the same thing, seems like a big German car problem. (Behr/Bosch blowers?)
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      12-19-2016, 06:47 PM   #10
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Quote:
Originally Posted by burnout8488 View Post
Yup, mines been doing this since ~38k miles. Only during Fall/Winter though. The fans go bad, I don't see any reason to replace the resistor due to this squeal.

My friend's Audi does the same thing, seems like a big German car problem. (Behr/Bosch blowers?)
Yep, its a cold weather thing. I wouldn't bother replacing anything unless it did it 24/7 without ever stopping even in the middle of summer.
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      12-21-2016, 01:23 PM   #11
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Mine whistles on lower speeds. But it's constant.
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      12-22-2016, 02:19 PM   #12
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I have this issue on my 2006 e90. Been like this for 3 years during the winter and I try to ignore it. It does seem to be getting worse every year.
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