Aston Dabb
Senior Member
- Joined
- Jan 5, 2020
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- Your Mercedes
- W212 AMG 2010 E350 CDI
Hello all,
I am replacing the main battery on my 2010 E350 CDI at the weekend for a new AGM battery due to a high idle fault (put on the main battery being faulty) but I was wondering whether I should replace auxiliary battery at the same time? There aren’t any faults on the dash saying aux battery is defective, however I’m not sure how long they last. Any advice?
I am replacing the main battery on my 2010 E350 CDI at the weekend for a new AGM battery due to a high idle fault (put on the main battery being faulty) but I was wondering whether I should replace auxiliary battery at the same time? There aren’t any faults on the dash saying aux battery is defective, however I’m not sure how long they last. Any advice?