how long do MB batteries last? - Mercedes-Benz Forum
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post #1 of 13 (permalink) Old 07-15-2015, 10:29 AM Thread Starter
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how long do MB batteries last?

How long should I expect a MB battery to last? My first battery lasted about 7 years before seeming sluggish (with the convertible top). The present battery is 9 years old with about 90,000 miles on it. I don't seem to have have any trouble with it, but 9 years is about twice as old as the ones I have to replace in my other cars.
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post #2 of 13 (permalink) Old 07-15-2015, 11:13 AM
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My CLK430 had a 10 year old battery when I bout it and it still worked fine. I bought a replacement from MB and it only lasted 4 years so it can vary. Conditions are probably the #1 factor.
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post #3 of 13 (permalink) Old 07-17-2015, 04:44 AM
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Generally, the MB battery life seems to be + or - 7 years, depending on conditions.

If there is an power interruption or low voltage while operating the power roof, you will have to resynchronize the power roof, which is done by opening and closing it manually.

The details are covered in your owner's manual.

For that reason, I always open/close my power roof, while the engine is running as well.
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post #4 of 13 (permalink) Old 07-17-2015, 07:25 AM
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Yes, I would agree with the panel, Myself I tend to wash my car w/music playing, but I've
had my ride since 05, and on my 2nd battery which I purchased about 3yrs ago.
And yes, it heavy as a MUG!!
Happy Motoring
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post #5 of 13 (permalink) Old 07-18-2015, 12:19 AM
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I will need to purchase a battery and was wondering the importance of cold cranking amps. I live in Northern California so the weather is pretty nice. Thank you for your help and advice. Oh and my vehicle is a 99 clk320
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post #6 of 13 (permalink) Old 07-18-2015, 02:56 PM
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My original lasted for 10 years. My indy told me to replace as it had failed some test. I still wonder how long it would have gone if I hadn't heeded his warning. There was no sign of anything wrong.

But I went to the dealer and got a new one. Why replace with an inferior product? I've never had any battery in any vehicle last as long.
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post #7 of 13 (permalink) Old 07-21-2015, 10:06 PM
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Agree with the others - mine nearly was 10 years and I replaced it with another MB. The cost difference between a non Benz and Benz was only a few dollars.
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post #8 of 13 (permalink) Old 07-23-2019, 06:07 PM
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Mercedes batteries are NOT made by Mercedes but for Mercedes and they do not last any longer than other equivalent batteries with the same warranty.
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post #9 of 13 (permalink) Old 07-23-2019, 06:13 PM
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post #10 of 13 (permalink) Old 07-23-2019, 06:17 PM
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You need to look in your owner manual to see what the minimum CCA for your vehicle battery is as well as the type/ model of battery ... don't go cheap, but expensive is not neccesarily better.
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