Changing Battery
Thread Starter
Senior Member
Joined: May 2012
Posts: 262
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2010 C63
Changing Battery
Lads,
I just bought a new battery. I've been told that there is a procedure to replace this to keep the computer happy. Can anyone shed some light on this for me?
Also, will I need to reprogram the Eurocharged tune?
Thanks!
Donny
I just bought a new battery. I've been told that there is a procedure to replace this to keep the computer happy. Can anyone shed some light on this for me?
Also, will I need to reprogram the Eurocharged tune?
Thanks!
Donny
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Joined: Oct 2012
Posts: 3,704
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From: Denham Springs,LA
'12 C63 Black Series, '12 ML350 BlueTech
Well if there is a specific procedure i would be glad to know as well.
Last time I swapped my OEM for a braille lightweight one I just disconnected the negative pole and wait a little while for any static electricity. Then disconnected the positive and remove the whole thing.
So far so good.
Last time I swapped my OEM for a braille lightweight one I just disconnected the negative pole and wait a little while for any static electricity. Then disconnected the positive and remove the whole thing.
So far so good.
Super Member
Joined: Mar 2012
Posts: 521
Likes: 3
From: North East
2011 C63 AW
About a month ago this was discussed. I posted a vid where it was recommended that 12volts be maintained to power the car electronics while the battery is disconnected. It was left open ended whether this was necessary.
I was hoping an MB tech could chime in and let us know what the dealership procedure is.
It's a shame we can't get a tech manual for these cars.
I was hoping an MB tech could chime in and let us know what the dealership procedure is.
It's a shame we can't get a tech manual for these cars.
Thread Starter
Senior Member
Joined: May 2012
Posts: 262
Likes: 2
2010 C63
About a month ago this was discussed. I posted a vid where it was recommended that 12volts be maintained to power the car electronics while the battery is disconnected. It was left open ended whether this was necessary.
I was hoping an MB tech could chime in and let us know what the dealership procedure is.
It's a shame we can't get a tech manual for these cars.
I was hoping an MB tech could chime in and let us know what the dealership procedure is.
It's a shame we can't get a tech manual for these cars.
Senior Member
Joined: Jul 2012
Posts: 308
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2014 C63 AMG 507 Edition
I recall that video too, the just of it is that you need to hook up the terminals to a batter charger temporarily as you swap out the battery...keeping constant power to the ECU....
Super Member
Joined: May 2007
Posts: 570
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From: Ontario, Canada
W204 C63 R171
Think you guys are really over reacting, even with my ocd and pride in doing the job right all you do is take the old battery out and put the new one in, I didn't notice any difference in any settings in the car when the battery was out and disconnected.
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Super Member
Joined: Apr 2014
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From: Chicago, IL
2018 AMG E63s
the video may have only applied to older model MBs, then. But he recommended maintaining voltage the entire time, as all settings would be lost otherwise. Perhaps MB and maybe even other manufacturers figured out that this would be unreasonable considering the batt needs to be replaced every 3-5 years or so...
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Banned
Joined: Jul 2013
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C63 AMG
I'm not sure I would swap batteries out with voltage applied to the system, ie, 'hot'
Easy to do though
Battery tender on the under hood jumper posts
Or one that plugs into the lighter socket
Easy to do though
Battery tender on the under hood jumper posts
Or one that plugs into the lighter socket
Last edited by Ingenieur; Oct 9, 2014 at 08:24 PM.
Thread Starter
Senior Member
Joined: May 2012
Posts: 262
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2010 C63
I've always been one to swap and go, but my mechanic last time mentioned this procedure to me. I don't know if he would just drumming up business. I am changing it Sunday and will let you know if it blows up!
Super Member
Joined: Mar 2012
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From: North East
2011 C63 AW
Member
Joined: Sep 2013
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From: Honolulu, Hawaii
'10 C63
The only procedure to follow when disconnecting is to remove the ground first then the positive cable. Installation is the reverse, positive on first, then the negative. It won't affect your ECM/ECU's, probably only your clock and radio presets.
Thread Starter
Senior Member
Joined: May 2012
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2010 C63
I did exactly this and had no issues. Took all of 10 mins to change it out.
