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2006 Mercedes-Benz ML350

Question: battery indicator light continuously lit while truck is running

Question

MBpal, Bourbonnais, IL, February 09, 2012, 18:35
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I have an 06 MB ML 350 and had an oil change at the dealer recently. However,technician said the battery needs to be changed since it failed the load test.Altho I was skeptical about it as i haven't been having problem starting the car I let him change it. 3 weeks later I noticed the battery indicator lamp lighted while the car is running.I'm supposed to bring it back to the dealer. I wonder if it was really the battery that is defective when he did the load test.what could be causing this. Pls. help I'm anticipating another rip off for repair of whatever is the problem but I could bear it as long as the technician can tell me the exact and definite cause of the problem.Are there specific ways for him to diagnose which specific part of the charging system needs to be repaired.By the way is it safe to drive it to the dealer's place (half mile away) or does it have to be towed?

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  • Answer #1

    globalhelper February 09, 2012, 20:47
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    if its the orig battery its 6 yrs old and prob is going bad. yes it can be load tested to determine the battery condition.the battery uses alot of energy every moment your key is on and 6yrs is very good.yes you can drive there

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    MBpal, February 10, 2012, 02:52
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    As I have said the battery has been replaced already when the warning light started coming up 3 weeks after they have installed the new battery.what else could have been wrong? Thanks

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    MBpal, February 10, 2012, 02:52
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    As I have said the battery has been replaced already when the warning light started coming up 3 weeks after they have installed the new battery.what else could have been wrong? Thanks

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  • Answer #2

    bedebtfree April 19, 2012, 19:36
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    Many Mercedes have a backup battery about the size of motorcycle usually under one of the seats that is dead. Always shows battery symbol on display when this battery dies around 5 years of life. Under $50 for the battery

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