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7 Series - E65 / E66 (2002 - 2008)
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  #1  
Old 11-01-2012, 01:48 PM
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Getting alternator replaced, battery too?

Hey everyone. I've read up on what reasons a dynamic drive error comes up. My car is at the dealer getting the alternator replaced since it was overcharging the battery. The battery I bought was a brand new AGM49 from Sears exactly like it should be, back in march. The dealer left me a message that they suggest a new battery for 580 because if I don't the warranty company won't honor the alternator warranty in the future, should it fail again. My warranty is about to run out in like 1,800 miles anyways.

What are your guys' input? Bs? Thanks guys!

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  #2  
Old 11-01-2012, 02:05 PM
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Did you have your new battery registered ???

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Old 11-01-2012, 02:09 PM
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Yep, you did it remember? Lol. Back when fuel pump was replaced.

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Old 11-01-2012, 03:30 PM
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Lol that's right I forgot .
Hahaha

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Old 11-01-2012, 04:10 PM
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I had my alternator changed under warranty a few months back and there was no mention of needing a new battery.
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Old 11-01-2012, 04:49 PM
Khabar Khabar is offline
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If battery is good, it is good. If u drained the battery when alternator was dead ,just recharged it.
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Old 11-01-2012, 04:56 PM
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Quote:
Originally Posted by Khabar View Post
If battery is good, it is good. If u drained the battery when alternator was dead ,just recharged it.
+1 I doubt the alternator will fail again in1800 miles. Doesnt the alternator have its own warranty anyway?
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Old 11-01-2012, 06:32 PM
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N62B44 SGM N62B44 SGM is offline
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Quote:
Originally Posted by Db750 View Post
I had my alternator changed under warranty a few months back and there was no mention of needing a new battery.
I see, thank you Db! When the SA mentioned it I thought it was probably him trying to sell it to me because of the error.

Quote:
Originally Posted by Khabar View Post
If battery is good, it is good. If u drained the battery when alternator was dead ,just recharged it.
The battery never went dead as it's only a few months old. Nor did the alternator, they just deemed it faulty because it was overcharging.

Quote:
Originally Posted by Expo BMW View Post
+1 I doubt the alternator will fail again in1800 miles. Doesnt the alternator have its own warranty anyway?
Good point Expo! I will bring that up to the SA. That's what I was thinking...if it took the stock alternator 91,xxx miles to go bad I'm sure a new one won't go bad anytime soon (knock on wood).

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Last edited by N62B44 SGM; 11-01-2012 at 06:33 PM.
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Old 11-01-2012, 07:09 PM
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I would ask if their labor has a warranty too
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