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Discussion Starter · #1 ·
Left the F***Kn lights off auto setting and now battery is dead as hell
Tried Charger box and only got lights on dash to come.
tried to start and only heard clicks...only did for one sec.
Next is to jump off or use trickle charger?

HELP!
 

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ML550, W212 E350 4 matic, 1966 Corvette C2 convt.
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2,689 Posts
Left the F***Kn lights off auto setting and now battery is dead as hell
Tried Charger box and only got lights on dash to come.
tried to start and only heard clicks...only did for one sec.
Next is to jump off or use trickle charger?

HELP!
You could be close to needing a battery if its original. Why not just call roadside assistance and have them come out and put a new battery in it.
 

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12 ML350 Bluetec pkg 2, 08 BMW 135i, 2012 F250 PS Diesel
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213 Posts
Had this exact issue yesterday! Wife left lights on all day at work and when she returned to car, all she got was a warning buzz and no light and no start. I drove out with a 750 cold cram amp jumper and that only got the dash light and a single (slow) turn of the engine. I then tried to jump it with my Diesel truck and that got another couple slow turns, but still no fire. So I put the jumper on one last time before giving up and I got a quick turn over and it fire. This was one of the toughest jumps I've delt with in a while...and I jump alot of vehicle and equipment. If vehicle is in the garage or at you house, I would do a charge of the battery and then maybe get it checked out to make sure it is still good. If not, keep trying the jumper and it will eventually fire..hopefully.
 

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2007 ML 350
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79 Posts
I had left my keys in my ignition overnight last year and had roadside assistance come jump me. they said once it was started i needed to go drive the car on the highway for 30-40 minutes to fully recharge the battery because of all the electrical power the vehicle uses. thought that was kind of odd but you could definitely tell when the car started up the alternator was just running like crazy. about 3 months later the battery needed to be replaced. my service advisor said that wasnt unusual when a battery is drained like mine was for it to fail soon after. sent roadside assistance out again and they replaced the battery. never experienced anything like that before. just my 2 cents.
 
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