W211 AMG Discuss the W211 AMG's such as the E55 and the E63

Aux Battery replacement W211 E55 AMG

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Old 09-11-2024, 05:13 PM
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2005 E55 AMG, 1988 420 SEL, 2000 S500
Aux Battery replacement W211 E55 AMG

What do you guys recommend for a Aux Battery Replacement? Local shop was taking too long I figured I can get something for the same or cheaper price on Amazon
Old 09-11-2024, 05:33 PM
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1999 C43 AMG, 2005 E55 Wagon
Amazon.com: Mighty Max Battery YTX14-BS Battery Replacement for Mercedes Backup Auxiliary 2115410001 Amazon.com: Mighty Max Battery YTX14-BS Battery Replacement for Mercedes Backup Auxiliary 2115410001

I bought one of these and replaced it in 10 minutes. It's under the air conditioning filter under the hood, passenger side (US)
Old 09-12-2024, 01:46 AM
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2005 E55 AMG, 1988 420 SEL, 2000 S500
Any issues or did it last a while?
Old 09-12-2024, 08:07 AM
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Originally Posted by Sulaco
Amazon.com: Mighty Max Battery YTX14-BS Battery Replacement for Mercedes Backup Auxiliary 2115410001

I bought one of these and replaced it in 10 minutes. It's under the air conditioning filter under the hood, passenger side (US)
Wow. I would personally never consider putting that in my car but hey, if you even get a couple years out of it I guess I'm the fool.
Old 09-12-2024, 01:17 PM
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2005 CLS55 AMG W219 C219
Just choose a well known brand and you should be ok. I can also recommend to swap out the AUX relay if you have never done so > https://mbworld.org/forums/c219/8443...ml#post8888552

Old 09-12-2024, 08:18 PM
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I put it in shortly after I bought the car. In 2018.

Was it made in China? Yes. And so was the OEM replacement they showed me at the dealer for 4x the price. I'm almost 7 years into this one and it's still fine.
Old 09-13-2024, 08:42 AM
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2006 CLS55 AMG, 2005 SLK 350 AMG
Originally Posted by Sulaco
Amazon.com: Mighty Max Battery YTX14-BS Battery Replacement for Mercedes Backup Auxiliary 2115410001

I bought one of these and replaced it in 10 minutes. It's under the air conditioning filter under the hood, passenger side (US)
I used the same battery when I replaced several years ago and have had no issues.

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