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Old 08-20-2012, 11:32 AM
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Battery light is on

Replace battery a month ago and the battery light came in this morning. Alternator?
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2004 X5 4.8is Imola Red-228K ZF-GA6HP26Z-Sold
2006 X3 3.0i Mystic Blue-175K, ///M pkg 6-Spd Manual- Trading in 6/10/17 for a Mini too!
2003 Silver X5 3.0- sold
2000 VW Beetle 1.8 turbo-165K- Totaled 9/11/16
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Old 08-20-2012, 11:35 AM
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alternator
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Old 08-20-2012, 12:33 PM
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You're local autoparts store should be able to run a test on the alternator for you, but yes it sounds like it's failing.

If it's on it's way out HERE is a link to the alternator for the 4.8is and HERE is a link to the one for the 3.0.

Also HERE is a link to a diy for the 4.4 alternator, it should give you a baseline idea of what you'll be looking at doing when doing the one on either of your Xs.
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Old 08-20-2012, 01:49 PM
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there is a diode bridge that goes bad on those, but i don't remember details - if you do the bridge search, you might be able to find something useful... is 4.8 - watercooled? i know that 4.6 alternator was watercooled 150A... 4.8 is 170A, right?
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E53 X5 4.6iS
147K mi - Sold May 2013
Tireprints left in:
USA, Nicaragua, Costa Rica, Panama, Russia

E53 X5 4.8iS built 2005-10-17
66200 mi - June 2012
96000 mi - June 2013
112000 mi - June 2014
OEM fire extinguisher
OE first aid kit
OE tow hitch
OE TV module
OE aspheric mirror
K&N air filter
black/white badges
rear camera
4-channel video recorder

Here is the list of things I have done to the X
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Old 08-20-2012, 04:44 PM
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Alternator for sure.

I've got mine 3 years ago. Car died at a major crossing, causing 4 ways of traffic jam. Friends came with jump start cable, Jumped for 15 minutes, moved 350 yards, died again, 50 yards away from a repair shot. So 2nd jump, PITA.

Get the alternator replaced asap before it drains battery.


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Originally Posted by Big "J" View Post
Replace battery a month ago and the battery light came in this morning. Alternator?
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  #6  
Old 08-20-2012, 11:05 PM
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Thanks guys!! I have an Alternator ordered and will be in tomorrow.
__________________
"I can’t understand it. I can’t even understand the people who can understand it"

Queen Juliana (1909-2004), of the Netherlands

"If you choose not to decide, you still have made a choice!"


2004 X5 4.8is Imola Red-228K ZF-GA6HP26Z-Sold
2006 X3 3.0i Mystic Blue-175K, ///M pkg 6-Spd Manual- Trading in 6/10/17 for a Mini too!
2003 Silver X5 3.0- sold
2000 VW Beetle 1.8 turbo-165K- Totaled 9/11/16
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