Wrong battery terminal connection, now No power
#1
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Wrong battery terminal connection, now No power
Darn it!..The guy working on my W207 E400 was trying to jump start the car and "accidentally" clamped (actually, just touched) the Positive and Negative cables incorrectly. Pos to neg and Neg to pos. No there is ZERO power. Not even on the instrument cluster. Nothing. The car won't even accept power with a new battery. Is there a fuse that is designed to blow when the battery terminals are connected incorrectly? Like a Powertrain fuse? He said he checked the prefuse box and all fuses were fine and the pyrofuse on the positive battery cable is fine.
Last edited by Paul Shalom; 08-16-2020 at 01:52 PM.
#2
Out Of Control!!
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Call your lawyer and insurance man as I believe the electrical system is cooked. I would also call any dealer and explain your situation----wada they respond!!
#5
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#6
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i would say you were up for several thousand dollars in Electronics. I had a BMW motorbike that the apprentice service technician did that to and the fix was $3,300. Obviously I did not have to pay it.
good luck Paul and let us know how it works out.
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#8
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You come here posting, asking for help, people tell you what you don't want to hear and you discount the very help you asked for by calling everyone "ridiculous"
The problem is you (or your choice in mechanics, anyway) have more than likely totalled the car. Hooking up that much voltage and amperage backwards is deadly to your car's computers.
Again, good luck, and I hope you have full coverage...
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604 C63 (08-16-2020)
#9
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what's helpful is not hooking up your jumper leads reversed and destroying all your computers on the car.
You come here posting, asking for help, people tell you what you don't want to hear and you discount the very help you asked for by calling everyone "ridiculous"
The problem is you (or your choice in mechanics, anyway) have more than likely totalled the car. Hooking up that much voltage and amperage backwards is deadly to your car's computers.
Again, good luck, and I hope you have full coverage...
You come here posting, asking for help, people tell you what you don't want to hear and you discount the very help you asked for by calling everyone "ridiculous"
The problem is you (or your choice in mechanics, anyway) have more than likely totalled the car. Hooking up that much voltage and amperage backwards is deadly to your car's computers.
Again, good luck, and I hope you have full coverage...
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Last edited by Paul Shalom; 08-16-2020 at 02:57 PM.
#10
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For the life of me, I can’t figure out why more people aren’t jumping to your aid lol
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Last edited by Paul Shalom; 08-16-2020 at 01:46 PM.
#12
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No. I think it’s probably cos you’re managing to sound like an arrogant know it all in the same thread where you posted asking for help cos neither you nor your “mechanic” knew what you were doing. The only guy here who ****ed up his car like this has somehow managed to convince himself he’s still the smartest guy in the room.
yup. That’s it.
yup. That’s it.
Last edited by 604 C63; 08-16-2020 at 01:52 PM.
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Harold1898 (08-17-2020)
#13
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Arrogant?? Because I refuse to accept "call a lawyer" as a feasible fix?...LOL. Hey... Happy melancholy trolling, Man. Live the fantasy. Now if you'll excuse me, I'm working.
Last edited by Paul Shalom; 08-16-2020 at 01:59 PM.
#14
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#15
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I'm glad you're optimistic about it but I'd be scared to death. Many cars have one big fuse between the batt and everything except the starter and Alt, but I don't see how reverse polarity would pop it. Imo it should have a diode to force pop that fuse, or one to protect the rest of the car, but I've never see one either way. My guess would be cost. If it's only a problem when an end user screws upthen why spend $ to prevent it?
This is one of two reasons they say always put the neg clamp somewhere else, like on the body/frame, not the batt. Most people don't understand how it all works, and those that do may be in a hurry and/or distracted, so neg to the body is pretty hard to screw up.
The other reason is H2, which I have a forever dent in my nose from when a batt detonated. I wasn't doing that btw, I was simply checking water level but somehow it went boom and I'm still baffled as to how. Maybe a wee little short inside that was just waiting for a little O2, which I provided. Almost forgot; it also covered me in a mist of acid. So I suggest wearing safety glasses when checking water, and now I blow on it first to get the H2 outta there as best I can. Eyes are way too valuable to take chances with and I was only about inch away from losing one that day....
This is one of two reasons they say always put the neg clamp somewhere else, like on the body/frame, not the batt. Most people don't understand how it all works, and those that do may be in a hurry and/or distracted, so neg to the body is pretty hard to screw up.
The other reason is H2, which I have a forever dent in my nose from when a batt detonated. I wasn't doing that btw, I was simply checking water level but somehow it went boom and I'm still baffled as to how. Maybe a wee little short inside that was just waiting for a little O2, which I provided. Almost forgot; it also covered me in a mist of acid. So I suggest wearing safety glasses when checking water, and now I blow on it first to get the H2 outta there as best I can. Eyes are way too valuable to take chances with and I was only about inch away from losing one that day....
#16
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Thread Starter
I'm glad you're optimistic about it but I'd be scared to death. Many cars have one big fuse between the batt and everything except the starter and Alt, but I don't see how reverse polarity would pop it. Imo it should have a diode to force pop that fuse, or one to protect the rest of the car, but I've never see one either way. My guess would be cost. If it's only a problem when an end user screws upthen why spend $ to prevent it?
This is one of two reasons they say always put the neg clamp somewhere else, like on the body/frame, not the batt. Most people don't understand how it all works, and those that do may be in a hurry and/or distracted, so neg to the body is pretty hard to screw up.
The other reason is H2, which I have a forever dent in my nose from when a batt detonated. I wasn't doing that btw, I was simply checking water level but somehow it went boom and I'm still baffled as to how. Maybe a wee little short inside that was just waiting for a little O2, which I provided. Almost forgot; it also covered me in a mist of acid. So I suggest wearing safety glasses when checking water, and now I blow on it first to get the H2 outta there as best I can. Eyes are way too valuable to take chances with and I was only about inch away from losing one that day....
This is one of two reasons they say always put the neg clamp somewhere else, like on the body/frame, not the batt. Most people don't understand how it all works, and those that do may be in a hurry and/or distracted, so neg to the body is pretty hard to screw up.
The other reason is H2, which I have a forever dent in my nose from when a batt detonated. I wasn't doing that btw, I was simply checking water level but somehow it went boom and I'm still baffled as to how. Maybe a wee little short inside that was just waiting for a little O2, which I provided. Almost forgot; it also covered me in a mist of acid. So I suggest wearing safety glasses when checking water, and now I blow on it first to get the H2 outta there as best I can. Eyes are way too valuable to take chances with and I was only about inch away from losing one that day....
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Last edited by Paul Shalom; 08-16-2020 at 03:51 PM.
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fred9x (08-22-2020)
#17
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Solved.
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No lawyer or insurance agent needed either...
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Last edited by Paul Shalom; 08-20-2020 at 10:46 AM.
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fred9x (08-22-2020)
#21
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#23
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#24
Tell me what the problem was please i have same issue
LOL...That's even more ridiculous. To Mercedes' credit, a momentarily reversed battery connection will not "destroy all your computers on the car" and it's not the first time someone has done it. Not even in a Fiat which has a safety powertrain fuse that blows in this event. The "help" You're referring to is to call the lawyer and the insurance agent??...
. Yeah, they are great electricians
. I'll pass on your pessimistic brand of "help" Sir. We Haven't had time to tackled it since that day. We'll have this car up and running today hopefully. I'll be sure to post what the solution was. Hopefully this will assist you in re-evaluating how useful your kind of "help" is.![thumbs](https://mbworld.org/forums/images/smilies/thumbsup.gif)
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