Ticking in dash?

9352e90 · 05-17-2014, 10:41 PM

Just wondering if anyone has experienced this issue, and if so was able to determine the case. Tonight when I was driving I noticed a faint ticking sound coming from behind my dash when the ac fan was running. When I turned off the blower the sound went away, the ticking was more fait when the system was on ac mode vs heat. I know the fan is located behind the glove box, but this sound seemed to originate somewhere below the vent cover in the middle of the dash. Any ideas?

335iAP · 05-18-2014, 12:04 AM

Probably the turn signal

Bavarian Black · 05-18-2014, 12:35 AM

Quote:

Originally Posted by 9352e90

Just wondering if anyone has experienced this issue, and if so was able to determine the case. Tonight when I was driving I noticed a faint ticking sound coming from behind by day when the ac fan was running. When I turned off the blower the sound went away, the ticking was more fait when the system was on ac mode vs heat. I know the fan is located behind the glove box, but this sound seemed to originate somewhere below the vent cover in the middle of the dash. Any ideas?

Could be a bad blower, or the mini fan located just behind and above the cd unit to cool it off....it's very hard to tell but seek another pro BMW tech opinion. Good luck.

PhaseP · 05-18-2014, 08:31 PM

There is a tiny fan on the A/C control unit inside. I had read in the previous models this fan used to make noise by age. Try to listen if the noise is coming from that area where the A/C control knobs are.
It blows air to some air temperature sensor, to get better reading or something like that.... has to be complicated like that since it is German over engineered :P

9352e90 · 05-19-2014, 12:00 PM

Hmm, that tiny control fan sounds like it could be the culprit, seems like the general location you described is where the noise is coming from. Gotta love the Germans

prinsey · 05-21-2014, 08:42 AM

I had this same issue, its the blower motor starting to go.

georgelb · 05-21-2014, 11:51 AM

Mine ticked for about a month or two, then the blower control module crapped out one day. I was able to replace it without removing the blower though, so not too bad.

AviatorBimmer · 05-21-2014, 01:22 PM

Do you owe the Mafia money? I would have a bomb sniffing dog check it out, if I were you.

05-17-2014, 10:41 PM	#1
9352e90 Lieutenant 92 Rep 426 Posts Drives: f10 535i, e90 325i, e70 X5 Join Date: Dec 2011 Location: Michigan, USA iTrader: (0)	Ticking in dash? Just wondering if anyone has experienced this issue, and if so was able to determine the case. Tonight when I was driving I noticed a faint ticking sound coming from behind my dash when the ac fan was running. When I turned off the blower the sound went away, the ticking was more fait when the system was on ac mode vs heat. I know the fan is located behind the glove box, but this sound seemed to originate somewhere below the vent cover in the middle of the dash. Any ideas? Last edited by 9352e90; 05-18-2014 at 10:05 AM..
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05-18-2014, 12:04 AM	#2
335iAP Captain 149 Rep 921 Posts Drives: AW E92 & F26 Join Date: Jul 2011 Location: United States iTrader: (0)	Probably the turn signal
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05-18-2014, 08:31 PM	#4
PhaseP Colonel 1007 Rep 2,108 Posts Drives: 325XI Join Date: May 2010 Location: Earth iTrader: (0)	There is a tiny fan on the A/C control unit inside. I had read in the previous models this fan used to make noise by age. Try to listen if the noise is coming from that area where the A/C control knobs are. It blows air to some air temperature sensor, to get better reading or something like that.... has to be complicated like that since it is German over engineered :P
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05-19-2014, 12:00 PM	#5
9352e90 Lieutenant 92 Rep 426 Posts Drives: f10 535i, e90 325i, e70 X5 Join Date: Dec 2011 Location: Michigan, USA iTrader: (0)	Hmm, that tiny control fan sounds like it could be the culprit, seems like the general location you described is where the noise is coming from. Gotta love the Germans
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05-21-2014, 08:42 AM	#6
prinsey Registered 0 Rep 3 Posts Drives: 2008 328xi Alpine White Join Date: Feb 2013 Location: new england iTrader: (0)	I had this same issue, its the blower motor starting to go.
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05-21-2014, 11:51 AM	#7
georgelb nsomneeak 39 Rep 501 Posts Drives: E92 RB 335i Join Date: Apr 2010 Location: DFW, TX iTrader: (3) Garage List 2007 335i [8.00]	Mine ticked for about a month or two, then the blower control module crapped out one day. I was able to replace it without removing the blower though, so not too bad. __________________ RB Turbos w/ N20 TMAP Sensor \| 93 Octane Protune by Cobb Plano \| xHP Stage 3 \| BMS DCI \| STETT CP \| Forge DVs \| RB PCV \| Helix FMIC \| CP-E Catted DPs \| Walbro 450 \| Bilstein B12 \| M3 Control Arms \| Defiv Lockdown Kit \| BBS CH \| Michelin A/S 3+ Hixson BMW of Monroe, LA - Shady Dealer \|
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05-21-2014, 01:22 PM	#8
AviatorBimmer Banned 26 Rep 551 Posts Drives: 2007 BMW 335i E92 Join Date: Jan 2013 Location: Virginia iTrader: (4)	Do you owe the Mafia money? I would have a bomb sniffing dog check it out, if I were you. Last edited by AviatorBimmer; 05-21-2014 at 01:53 PM..
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