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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Fri, Jun-11-2010, 04:02:01 AM   #21
ccsykes
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Originally Posted by Chaser720 View Post
Bumping an old thread here but by regulator you mean voltage regulator?
Hell.. my car did the same thing today under a load at high RPM.. first time I have noticed it..

Guess I need to get a new alternator now.. damn.. it never ends lol!!
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Old Sat, Jun-25-2011, 05:41:19 PM   #22
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Default Re: Battery Light at High RPM

i'm having this issue now and just ordered the alternator from bavarian auto, are there any other parts (belts, pulley, gasket etc etc) that I would need to get? thanks.
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Old Sat, Jun-25-2011, 06:39:08 PM   #23
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Default Re: Battery Light at High RPM

The alternator should be the only thing that needs replaced.

I have been through 2 rebuilt bosch units. On my third one ordered from Turner Motorsports website. The day after i installed it the battery light came on after a high load high rpm pull then went out a minute or two later.
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Old Sat, Jun-25-2011, 07:48:37 PM   #24
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Default Re: Battery Light at High RPM

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Originally Posted by InAM3 View Post
The alternator should be the only thing that needs replaced.

I have been through 2 rebuilt bosch units. On my third one ordered from Turner Motorsports website. The day after i installed it the battery light came on after a high load high rpm pull then went out a minute or two later.
Did it go away eventually on the 3rd one? After how many miles on the first 2 did you have to replace it? Thx
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Old Sat, Jun-25-2011, 08:32:13 PM   #25
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Default Re: Battery Light at High RPM

the alternator is out. i just replaced mine a few weeks ago. Bought one from autohaus.
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Old Sat, Jun-25-2011, 10:15:46 PM   #26
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Default Re: Battery Light at High RPM

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Originally Posted by AW_IRed View Post
i'm having this issue now and just ordered the alternator from bavarian auto, are there any other parts (belts, pulley, gasket etc etc) that I would need to get? thanks.
belt, tensioner pulley, and shock would be good items to do.
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Old Sat, Jun-25-2011, 11:16:59 PM   #27
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Default Re: Battery Light at High RPM

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belt, tensioner pulley, and shock would be good items to do.
Thanks. Where's the best site/place to get them?
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Old Sat, Jun-25-2011, 11:50:17 PM   #28
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Default Re: Battery Light at High RPM

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Thanks. Where's the best site/place to get them?
Tischer (getbmwparts.com) or similar.
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Old Sun, Jun-26-2011, 12:15:47 AM   #29
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Default Re: Battery Light at High RPM

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Tischer (getbmwparts.com) or similar.
Thanks!!
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Old Sun, Jun-26-2011, 08:19:30 PM   #30
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Default Re: Battery Light at High RPM

For people looking to go used/rebuilt on these... IMHO dont. I tried to save a buck and it took me three rebuilt ones to get one that actually worked right. Not worth the hassle.
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Discussing Battery Light at High RPM in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)