Question about 2006 Mercedes-Benz A 180

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I have an A class Mercedes w169 2006 mod and it keeps draining my battery. I did take all ths fuses out but stil the test light stays on.

After i leave the car for 2 days without using it the battery becomes dead.

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Try disconnecting the alternator electrical connectors, if it still goes dead have the battery tested, it may have a shorted call.

Posted on Mar 20, 2014


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Posted on Jan 02, 2017

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SOURCE: i have a 02 mercedes c240, the battery dies every day, replaced battery and it keeps dying, i have to jump it off every time i drive it. please help

one of the problems could be , you have a bad drain on battery, check charging system,if you disconect battery and hook it back up does it ark if so check all elecrical components for drain

Posted on May 26, 2009

  • 477 Answers


I am assuming that the engine won't even turn over. could be lots of different things. The simplist is to make sure the car in in PARK , won't start if not. Other things could be , Security imobilizer if you have one. Does your key have a electronic chip in it ? Try your other set of keys if you have one. Check if battery connections are clean and tight.

Posted on Jun 04, 2009

  • 1619 Answers

SOURCE: battery on mercedes A140 drains. I drove the car

aftermarket stereo? dome lights? car alarm? Use a multimeter and see what fuse has power draw when car is off.

Posted on Jun 15, 2009

  • 1 Answer

SOURCE: dead battery mercedes 03 e320

theres a manual key in your romote key . all you need to do is put your key face down( pacni red button on the batton) you see a little botton that you puch to the side and pull yhe metal out.

Posted on Aug 28, 2009

  • 510 Answers

SOURCE: have mercedes E class key fob will not open doors,

If key will not turn
Car battery flat,charge or jump to activate elec ignition

Posted on Feb 06, 2010

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1 Answer

The alarm keeps going off for no reason i had to unhook the battery,what can i do?

Check for a battery drain ie:trunk light or glovebox light staying on
make sure all the door catches are closing properly spray the locks with wd40, Including the hood and trunk catches, check the radio is off properly, You made need to get a electrical drain check done by an electrical expert ?
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I have a Battery/Alternator error on a C240 2001 model. I started the car and checked the charge via a voltmeter and it was 14.22. Another unusual thing is that when left for a day or two the battery wil...

You have what is called a "parasitic drain" that is draining the battery on your car while is not running. Something is staying on after you turn the key off, it could be any number of things, from a stuck relay to a trunk light staying on that slowly drains the battery. A parasitic drain test will need to performed to determine the cause so repairs can be made....Here is a link that explains how to do this test....Make sure your battery is fully charged before starting this test. Also, after you disconnect the battery cable, wait 15-20 minutes before starting the test...this allows any capacitors to drain and not give a false reading...
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Jul 17, 2011 | 2001 Mercedes-Benz C-Class

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Hi, The battery has suddenly drained on my 1999 T Reg Mercedes C Class Estate. Yesterday the horn suddenly sounded for no reason and would not stop....then it stopped on it's own. This morning, no power in...

According to the Mercedes forum, you are not alone, the alarm system goes off at random, it has something to do with the tow button, disabling the horn doesn't stop the alarm and the lights keep flashing. But the horn is quieted. I would trash the alarm system, or pay the dealer to mess with it, which is usually an expensive joke. You have insurance on the car, let them steal it. I stopped worrying about my bike, I leave the key in it. Nobody touches it. Before I couldn't leave site of it. Now, I don't care. Let them have it, I'll get a new one, Anyway, check out mercedes forum.

Jul 21, 2010 | 1999 Mercedes-Benz C-Class

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Do not have model but my sis bought an old (maybe 199l? l993?? or so) sedan. BATTERY dies constantly; replaced. she said in the manual it says you have to drive it every single day for 5 mi to keep it...

do a battery leak test, separate the neg cable and jump it with a test light, it should light and then dim, if not something is staying on, look for a light or radio that is staying on, i usually pull the fuses one at a time till the light goes off, but dont get fooled by the ecm fuse it always draws a little, then chaeck cables on the battery , and check alternator voltage charge, should be approx 14 volts, driving it every day is bunk, or there would be a lot of dead cars in the citywhere people use them only on the weekends, as for the spring i would have to see it

May 09, 2010 | 2002 Mercedes-Benz C-Class

1 Answer

What is draining my battery on my c220

Maybe the alternator. You can take a test light, connect it to the disconnected positive cable and the battery positive terminal. Make sure everything in the car is turned off, and the doors are closed. If the test light lights, something is draining the battery. You can go to the fusebox and pull 1 fuse at a time, when the light goes out, the problem is in that circuit.

Mar 06, 2010 | 2003 Mercedes-Benz C-Class

1 Answer

My alternator and battery tested good.

Something is draining the power. You have an open circuit somewhere. The sooner it drains(1-2 hours) the bigger the load, the more heat you should be able to detect from the drain. If it takes a lot longer(like overnight) then it will be a little harder to detect. Try unhooking things one at a time. Your alternator could be working properly when the car is running, then shorting when its off. That would make the drain fast. A light staying on under the hood or in the trunk, or dome light would make it drain slower. Or it could be just a wire shorting to ground.

Feb 17, 2010 | 1987 Mercedes-Benz Mercedes Benz 190 Class

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Battery on mercedes A140 drains. I drove the car

aftermarket stereo? dome lights? car alarm? Use a multimeter and see what fuse has power draw when car is off.

Jun 09, 2009 | 2001 Mercedes-Benz C-Class

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