E-Class (W211) 2003-2009

03 E320 battery dead, can't open trunk.

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Old Oct 18, 2021 | 01:50 PM
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2003 E 320 Sedan
03 E320 battery dead, can't open trunk.

I was gone for 8 days, came out this this morning dead battery, doors will lock and unlock, but trunk will not.. Even when using if using the emergency key. There's probably a previous post about this but I never use the right words to find what I'm looking for. Appreciate any suggestions.
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Old Oct 18, 2021 | 06:19 PM
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2008 E350, 2012 ML350, 2014 E350, 2015 ML350
Originally Posted by John385
I was gone for 8 days, came out this this morning dead battery, doors will lock and unlock, but trunk will not.. Even when using if using the emergency key. There's probably a previous post about this but I never use the right words to find what I'm looking for. Appreciate any suggestions.
A look at this thread?
http://www.mercedesmedic.com/how-to-...ercedes-trunk/
or
https://mbworld.org/forums/w211-amg/...ml#post7860451
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Old Oct 18, 2021 | 06:36 PM
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2003 E 320 Sedan
Ah.....that's where the main battery is.
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Old Oct 18, 2021 | 06:37 PM
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C320
Jack up the car and hook up the jumper cables to the starter motor to unlock the car. There's also a hidden + terminal in the fuse box. I never understood why Mercedes decided to put an auxiliary + terminal under the hood of the wagons but not the sedans. That's German logic for you.
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Old Oct 18, 2021 | 06:37 PM
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Thanks!
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Old Oct 18, 2021 | 06:44 PM
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Found this great video that does what Pluto doesn't know........
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Old Oct 20, 2021 | 05:10 PM
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Originally Posted by John385
I was gone for 8 days, came out this this morning dead battery, doors will lock and unlock, but trunk will not.. Even when using if using the emergency key. There's probably a previous post about this but I never use the right words to find what I'm looking for. Appreciate any suggestions.
Did you ever figure out how to unlock the trunk with the key? Most people don't realize that if the key turns, you have to lift the handle while the key is turned in order to open the trunk. If you just turn the key one way or the other and then return it to center, it will not unlock the trunk. There's actually directions in the manual.
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