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W221 Faulty Alternator

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Old 06-27-2015, 04:21 PM
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White S63 AMG W/Designo Interior
W221 Faulty Alternator
My 09 W221 S63 alternator went bad with only 55k miles is this a common thing with these cars?...Maybe Should Be A Recall?
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Old 06-27-2015, 04:27 PM
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2013 CLS550 4Matic; 2014 GL350; 2015 GL63; 2016 GTS; 2021 G63
I had the same problem on my 2006 S at about the same time period (actually was closer to 40k miles)
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Old 06-28-2015, 12:59 PM
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2016 Mercedes S550
Originally Posted by S500 Man
My 09 W221 S63 alternator went bad with only 55k miles is this a common thing with these cars?...Maybe Should Be A Recall?
Mine went out at about 90k miles
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Old 06-28-2015, 02:19 PM
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2007 S550 4Matic W221 (long drives/daily), 2007 e63 amg (toy), 2004 e500 (daily)
My 2007 s550 alternator went out about 6 months ago just under 70k!
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Old 06-28-2015, 03:41 PM
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2013 S550 4matic (AMG sport package), 2016 Corvette Stingray.
What's the cost of a new or rebuilt?
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Old 06-28-2015, 03:57 PM
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2007 S550 4Matic W221 (long drives/daily), 2007 e63 amg (toy), 2004 e500 (daily)
Believe it was around $300 - 350 list! I own a few repair shops so i get everything at cost!
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Old 06-28-2015, 04:08 PM
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2016 Mercedes S550
Originally Posted by amgcedes
Believe it was around $300 - 350 list! I own a few repair shops so i get everything at cost!


Sounds about right what I was shopping them at for...rebuilt. I opted in a new Bosch for $420 I believe.
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Old 06-28-2015, 04:42 PM
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2013 S550 4matic (AMG sport package), 2016 Corvette Stingray.
The alternator should definitely have a longer lifespan then 6yrs but it's great to know that the cost of replacement out of pocket isn't so bad.
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Old 10-21-2016, 01:45 PM
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s550
Can u tell me the most common problems when the alternator is going??
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Old 10-21-2016, 02:40 PM
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s550
Is the voltage regulator in the Alternator on the 2008 s550 4matic if not where is it located? Thanks
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