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Chelsea kilgo Posted on Jan 13, 2018
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My 1991 Mercedes Benz 300e is having a very high battery drain to the pint where the battery dies in about 2 hours. There's nothing on in the car no lights nothing. I cannot figure out where the drain is coming from. It must be an electrical short but how do I figure out where it's coming from?

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rohyanti

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  • Posted on Oct 09, 2019
rohyanti
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Jika kendaraan sudah berumur, dan pemakaian batty yang sudah lama, kemungkinan terbesar, adalah jaringan kulit kabel-kabel sudah banyak yang bocor, solusi yang terbaik adalah mengganti semua kabel, dengan instalasi ulang, namun jika hal ini memakan biaya banyak untuk negara anda..

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  • Posted on Jan 15, 2018
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I had similar problem with my 1987 230te. Turned out to be the diode pack on the back of the alternator. There was no charge going to the battery which went flat very quickly. Very cheap to replace and can be done in 15 mins. Might be worth just changing it .

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  • Posted on Jan 13, 2018
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Car is 25 year old. Some wire/wires are shorting with each other or the battery. For doing a Battery drain test known also as Parasitic Draw test.
You need a good Multimeter, probes and Fuse puller. follow the link given below for You Tube and similar ones. It is very time consuming.
How To Perform a Parasitic Draw Test - EricTheCarGuy

I’m happy to assist further over the phone at https://www.6ya.com/expert/uttamjeet_2f3adc18600f8ede

3 Related Answers

Anonymous

  • 11 Answers
  • Posted on Apr 27, 2009

SOURCE: '89 benz 300e, hard to turnover when starting, fuel pump/filter?

Run some Sea Foam Through it you tube sea foam It works

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Anonymous

  • 1 Answer
  • Posted on Jul 15, 2009

SOURCE: Mercedes benz wont go into reverse

300e tranny reverese uses clutch disk for B3 and therefore no external fix. You will need to pull the tranny out and might as well rebuild the whole thing.

Mike

  • 4383 Answers
  • Posted on Oct 10, 2009

SOURCE: Turn off check engine light 1992 mercedes benz

The check engine light is on for a reason. You need to pull the error codes, and resolve all of the issues indicated. Then the light will go off.

If a condition were to happen, and be intermittent, the light would go out....But your description appears to have a fault condition detected. It is better and less expensive to fix the issue(s).

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