Change Battery without loosing memory?
Thread Starter
8th Gear
Joined: May 2016
Posts: 8
Likes: 1
From: North Carolina
Change Battery without loosing memory?
Question. If I use the factory battery maintainer plugged into the outlet while I chance battery in my Convertible C7 will I maintain my memory or do I have to buy a memory minder? Thanks for any input from someone who knows.
Team Owner
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Le Mans Master
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From: Lake Havasu City Arizona
I had to reconfigure the Driver Information center (DIC) settings as far as my default views. Also some Infotainment settings had to be reset. Others I had set were not changed. Go figure. Some have reported that nothing changed.
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Race Director
Joined: Mar 2001
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From: Bonneville Salt Flats
I have a typical 9-volt (battery equipped) "memory" maintainer that plugs into a fulltime-on (rear on the C7) "cigarette lighter" plug.
Though I have not had the need to use it on the C7 I have used it many times on other vehicles including recently on my C5... again. I don't have a picture of the thing but I'm sure it was originally from Walmart. I would, however, suggest that if anyone has one of these and have had it for a long time, I'd check the voltage of the 9-volt battery each time before using it.
Btw, it works exactly as advertised. All the best.
Though I have not had the need to use it on the C7 I have used it many times on other vehicles including recently on my C5... again. I don't have a picture of the thing but I'm sure it was originally from Walmart. I would, however, suggest that if anyone has one of these and have had it for a long time, I'd check the voltage of the 9-volt battery each time before using it.
Btw, it works exactly as advertised. All the best.
Pro
Joined: Oct 2014
Posts: 528
Likes: 325
i have a snap on memory saver EESM500 ,,, it is worth every penny, especially if you live where you get E checked, you wont lose any codes if you need to disconnect or change battery.
below is a link
https://www.ebay.com/p/Snap-on-EESM5...1738677&chn=ps
below is a link
https://www.ebay.com/p/Snap-on-EESM5...1738677&chn=ps
Thread Starter
8th Gear
Joined: May 2016
Posts: 8
Likes: 1
From: North Carolina
Okay, let me try again. What I am asking is if the $100 option Battery Maintainer that came with my C7 will keep voltage to the various instruments that need it while I am changing out the battery?? Has anyone changed a battery while using the GM supplied battery maintainer? If so, what was the result? Did you have to reset any of the functions like window indexing, seat, etc. or did they stay set as they were?
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From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
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Why worry about losing everything, you won't. If you "save" having to re-index the windows, this is what you save.
Window Indexing and Express-Up Reset
Window indexing may be required if the vehicle battery has been recharged or disconnected, or is not working. Express-up and the convertible top will not function until the windows are reset. After battery power is restored, a message or code displays in the Driver Information Center. See Driver Information Center (DIC) on page 5-23.
Once power is restored:
1. Close the doors.
2. Start the vehicle.
3. Put windows down
4. Raise each window and hold the window switch up in the fully closed position for a few seconds after the window is up.
Elmer
Window Indexing and Express-Up Reset
Window indexing may be required if the vehicle battery has been recharged or disconnected, or is not working. Express-up and the convertible top will not function until the windows are reset. After battery power is restored, a message or code displays in the Driver Information Center. See Driver Information Center (DIC) on page 5-23.
Once power is restored:
1. Close the doors.
2. Start the vehicle.
3. Put windows down
4. Raise each window and hold the window switch up in the fully closed position for a few seconds after the window is up.
Elmer
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Originally Posted by Bucks Centennial
Okay, let me try again. What I am asking is if the $100 option Battery Maintainer that came with my C7 will keep voltage to the various instruments that need it while I am changing out the battery?? Has anyone changed a battery while using the GM supplied battery maintainer? If so, what was the result? Did you have to reset any of the functions like window indexing, seat, etc. or did they stay set as they were?
Yea, easy to read-index windows and fix other stuff, but if you didn't have to by plugging something in that you already have, even easier.
Drifting
Joined: Oct 2013
Posts: 1,577
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I have heard that doing that can kill the alternator on these new vehicles. I have replaced an alternator and the instructions that came with the alternator said specifically that the battery had to be at least 50 percent or alternator death could occur.
Team Owner
Joined: Apr 2013
Posts: 26,232
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From: Chirper Island
Starting to sound like no one knows the answer you are looking for. For the benefit of others that may come across this thread, if you try it, please post the results.
Yea, easy to read-index windows and fix other stuff, but if you didn't have to by plugging something in that you already have, even easier.
Yea, easy to read-index windows and fix other stuff, but if you didn't have to by plugging something in that you already have, even easier.
You will lose nothing but window indexing (maybe); no presets whatsoever. Mine has been disconnected a few times, and only has needed re-indexing about 50% of the time. Seats, mirrors, radio were never affected. Also: re-indexing window ~3 seconds, hooking up something = much more time.
Burning Brakes
Joined: Mar 2010
Posts: 1,016
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I had my 2015 in because the HVAC actuator went bad, and for an inspection at the same time. Instead of doing the state inspection first, they changed out the actuator, disconnecting the battery (of course) in the process, and could not do the inspection after that. Had to drive it for a day or so and bring it back. Also, for some reason and I'm not sure why, I also lost the outside temperature reading on the first go around (don't know if that was due to the battery being disconnected or them updating the software).
