2005 C230K battery change; DIY or pay?? - Page 2 - Mercedes-Benz Forum
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#11 (permalink) Old 01-20-2012, 10:10 AM
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Thanks for the number guys but if I change it out myself will I have to reset any codes? What's the easiest way to do this? Thanks again.
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#12 (permalink) Old 01-20-2012, 11:02 AM
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Originally Posted by Musikmann View Post
TexFinn is mostly right and IIRC too, if you have paid at least $100 for dealer service in the last 12 months you have coverage.
Yup, forgot about the $100 spend in service.
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#13 (permalink) Old 01-20-2012, 07:30 PM
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Also, some roadside service centers (usually run by dealers) will actually come out and replace a battery for just the cost of the battery - no labor. It depends on that local service center. It's worth a call. If you DIY, you have to reset ESP (turn the steering wheel lock to lock) and reset the auto-close windows and sunroof (press and hold the buttons in the close position for several seconds after the glass closes).

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#14 (permalink) Old 01-24-2012, 10:53 PM
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Originally Posted by racingluxury View Post
Thanks for the number guys but if I change it out myself will I have to reset any codes? What's the easiest way to do this? Thanks again.
Can anyone comment on this question?

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84 Caprice Estate Wagon
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#15 (permalink) Old 01-25-2012, 12:09 PM
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did it!!!!

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Can anyone comment on this question?
What I decided to do was connect a jumper cable to the positive and negative spots on the vehicle and the other side of the cable to the new battery. This was VERY tricky cause you don't wanna connect a new battery to the car while the other battery isn't disconnected yet...

So you gotta disconnect the negative from the dead battery and instantly connect the negative to the terminal spot. Then do the same for the positive. Within seconds you wouldn't lose any data. But it's quit hard getting that battery out of the car with cables running around you...plus that damn battery was heavy as hell!!!

Then slowly put in the new battery while making sure your eyes doesn't leave the jumper cable claws... that cannot get disconnected or else you've done everything for nothing. Whew!!! No alarms...no resets...
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#16 (permalink) Old 01-25-2012, 08:16 PM
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I would be very careful doing that sort of thing. MBZ electronics are very "sensitive" and it's very easy to fry a SAM. Resetting the windows, sunroof and ESP takes about two minutes and costs nothing. Replacing a SAM requires several hours at the dealer and is an expensive part.

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#17 (permalink) Old 01-25-2012, 10:00 PM
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right!

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Originally Posted by rudeney View Post
I would be very careful doing that sort of thing. MBZ electronics are very "sensitive" and it's very easy to fry a SAM. Resetting the windows, sunroof and ESP takes about two minutes and costs nothing. Replacing a SAM requires several hours at the dealer and is an expensive part.
You're right...that's why you gotta disconnect and reconnect really fast but don't keep both batteries on at once.
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#18 (permalink) Old 01-25-2012, 10:04 PM
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Originally Posted by rudeney View Post
I would be very careful doing that sort of thing. MBZ electronics are very "sensitive" and it's very easy to fry a SAM. Resetting the windows, sunroof and ESP takes about two minutes and costs nothing. Replacing a SAM requires several hours at the dealer and is an expensive part.
I believe the question was, how do you reset the windows, sunroof and ESP and anything else that might need to be reset when replacing a battery? Thanks

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#19 (permalink) Old 01-25-2012, 10:09 PM
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I believe the question was, how do you reset the windows, sunroof and ESP and anything else that might need to be reset when replacing a battery? Thanks
Did you read Rodney's post right above your previous post?

Also, window resetting is explained in your Owners Manual. In case you do not have one, you can download it from here: Mercedes-Benz - Home of C, E, S, CLS, CL, SLK, SL, R, GLK, M, GL, G Class.
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#20 (permalink) Old 01-26-2012, 09:30 AM
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Very helpful, thanks to everyone.

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