Battery becomes completely empty
Thread Starter
Newbie
Joined: Nov 2010
Posts: 2
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From: Prague
E270 CDI W211
Battery becomes completely empty
I have W211 Mercedes E270 CDI. If I do not start the engine for more than about a day, battery becomes completely empty. I first thought the battery completed his life and is dead. So change it with brand new one but it did not solve the problem. If I start the engine every day, I sometimes see “Malfunction electrical consumers switched off” message along with a battery symbol on the display. I get checked the alternator. It recharges the battery well. Any idea the possible problem?
Super Member
Joined: Oct 2007
Posts: 917
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From: Manassas, VA
10 Cayenne GTS, 07 Porsche 911 Turbo
Sounds like what's called a "deep discharge" due to a grounding problem. Based upon your description I would take the car to an independent auto electrical shop and see if they can find the short.
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I have W211 Mercedes E270 CDI. If I do not start the engine for more than about a day, battery becomes completely empty. I first thought the battery completed his life and is dead. So change it with brand new one but it did not solve the problem. If I start the engine every day, I sometimes see “Malfunction electrical consumers switched off” message along with a battery symbol on the display. I get checked the alternator. It recharges the battery well. Any idea the possible problem?
