hvac fan issue and rear defrost

hemiboy345 · 12-17-2013, 06:37 PM

So, I've had a few issues for awhile

. I thought it was my battery; finally got around to putting a new battery in and problems still exist. First and most prominent is the hvac fan, in auto or manual HEAT the fan will intermediately turn on and off on its own. I have never had this issue with AC in the warmer months. I have been told it was low battery voltage due to cold weather. But with a new h8 size battery I feel this to be untrue. Next is an issue with the rear defroster. It used to work when it wanted with lots of radio static. Now it does the same! Any ideas? By the way I have searched numerous search terms for both issues to no avail.

PichaDis11 · 12-17-2013, 06:40 PM

Have you gotten the new battery registered as yet?

GoRomeo · 12-17-2013, 06:44 PM

I had these issues and was mine got fixed when I replaced my battery. Your situaion is weird.

Did you replace your battery with correct one?

hemiboy345 · 12-18-2013, 07:21 AM

Battery is registered and the new battery is a higher capacity h8 size ( compared to stock h6)

12-17-2013, 06:37 PM	#1
hemiboy345 New Member 2 Rep 17 Posts Drives: 2006 330xi Join Date: Dec 2011 Location: nh iTrader: (0)	hvac fan issue and rear defrost So, I've had a few issues for awhile . I thought it was my battery; finally got around to putting a new battery in and problems still exist. First and most prominent is the hvac fan, in auto or manual HEAT the fan will intermediately turn on and off on its own. I have never had this issue with AC in the warmer months. I have been told it was low battery voltage due to cold weather. But with a new h8 size battery I feel this to be untrue. Next is an issue with the rear defroster. It used to work when it wanted with lots of radio static. Now it does the same! Any ideas? By the way I have searched numerous search terms for both issues to no avail.
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12-17-2013, 06:40 PM	#2
PichaDis11 Colonel 295 Rep 2,202 Posts Drives: E90 N52 Join Date: Mar 2013 Location: NY iTrader: (3)	Have you gotten the new battery registered as yet? __________________ Retrofits: 322, 609, 6FL, 6NR, 6VC, 2TB.. Upgrades: Bilstein B8 Eibach Spring kit
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12-17-2013, 06:44 PM	#3
GoRomeo Brigadier General 964 Rep 3,854 Posts Drives: 330i, 135i Join Date: Feb 2006 Location: San Diego CA iTrader: (0) Garage List 2008 BMW 135i [9.50] 2006 330i [6.75]	I had these issues and was mine got fixed when I replaced my battery. Your situaion is weird. Did you replace your battery with correct one?
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12-18-2013, 07:21 AM	#4
hemiboy345 New Member 2 Rep 17 Posts Drives: 2006 330xi Join Date: Dec 2011 Location: nh iTrader: (0)	Battery is registered and the new battery is a higher capacity h8 size ( compared to stock h6)
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