Dash Rattle/Squeak (And Gone When It's Raining)

BayMoWe335 · 06-18-2015, 09:14 AM

This is so weird.

I have develiped a rattle when it's cold, it turns into a squeak when it's hot (80+ degrees) and goes away completely when it's raining.

I think the fact it goes away when it's raining is a clue. Is it possible under the hood or a body panel that is squeaking and coming in the cabin? I can hit the dash under the glove box or under the rattle and duplicate the sound (unless the car is wet).

Any ideas on where to check? It's like "CHIR CHIRP CHIRP CHIRP CHIRP." lol

It's driving me nuts

thakid22 · 06-22-2015, 04:43 AM

My climate control fan used to do this on my 06 330i.

If the fan speed was on low I would get an occasional squeak / chirp over
bumps or if I hit under the glove box with my hand.

Wet or dry didn't matter for mine.

There is a but in the center of that fan.
I sprayed it with some silicone spray and it stopped.

Luckily, the fan is easily accessing from under the hood.
You just have to remove the micron air filter at the base of the windshield under the hood to get there.
Of course its on the passenger side.
You might have to remove the cowl too, but I don't think so.

06-18-2015, 09:14 AM	#1
BayMoWe335 Colonel 1179 Rep 2,132 Posts Drives: 2010 E92 335i 6MT Join Date: Aug 2009 Location: US iTrader: (0)	Dash Rattle/Squeak (And Gone When It's Raining) This is so weird. I have develiped a rattle when it's cold, it turns into a squeak when it's hot (80+ degrees) and goes away completely when it's raining. I think the fact it goes away when it's raining is a clue. Is it possible under the hood or a body panel that is squeaking and coming in the cabin? I can hit the dash under the glove box or under the rattle and duplicate the sound (unless the car is wet). Any ideas on where to check? It's like "CHIR CHIRP CHIRP CHIRP CHIRP." lol It's driving me nuts
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06-22-2015, 04:43 AM	#2
thakid22 Lieutenant 287 Rep 595 Posts Drives: 2021 Bmw M340i M-Sport w/ VDC Join Date: May 2013 Location: Little Rock iTrader: (0)	My climate control fan used to do this on my 06 330i. If the fan speed was on low I would get an occasional squeak / chirp over bumps or if I hit under the glove box with my hand. Wet or dry didn't matter for mine. There is a but in the center of that fan. I sprayed it with some silicone spray and it stopped. Luckily, the fan is easily accessing from under the hood. You just have to remove the micron air filter at the base of the windshield under the hood to get there. Of course its on the passenger side. You might have to remove the cowl too, but I don't think so.
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