Disco/Reco-ing Battery. Consequences?
10-14-2005, 09:37 PM
#1
Contributors
Thread Starter
Join Date: Aug 2005
Location: Austin TX
Posts: 6,554
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: 2014 X5 xDrive 5.0 M Package Carbon Black Metallic/2008 M Roadster Imola Red
Hi Friends:
I have read that disconnecting/reconnecting the battery can have some unforeseen (at least by me) consequences. One individual reports that failure to "reset the computer" after disco/reco-ing the battery caused a false flat-tire warning. I would like to know what, if anything, normally is required, in terms of resetting "the computer" or anything else, if one discos/recos the battery. Who knows, I might find a much lighter battery. ~{;^)
I also am interested in knowing anything you know about resetting, I suppose, the ECU in the 545i. I assume that it has a learn function--that adjusts to driving styles and mods, but I am not sure. If one resets the ECU, does the computer start relearning things having been forgotton because of the reset? How do you "reset the computer" in a 545i? Why would you need, or want, to do so?
I have read that disconnecting/reconnecting the battery can have some unforeseen (at least by me) consequences. One individual reports that failure to "reset the computer" after disco/reco-ing the battery caused a false flat-tire warning. I would like to know what, if anything, normally is required, in terms of resetting "the computer" or anything else, if one discos/recos the battery. Who knows, I might find a much lighter battery. ~{;^)
I also am interested in knowing anything you know about resetting, I suppose, the ECU in the 545i. I assume that it has a learn function--that adjusts to driving styles and mods, but I am not sure. If one resets the ECU, does the computer start relearning things having been forgotton because of the reset? How do you "reset the computer" in a 545i? Why would you need, or want, to do so?
10-15-2005, 01:04 AM
#2
Contributors
Join Date: Apr 2005
Location: Bay Area, CA
Posts: 599
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: 545i Sport Auto (see sig)
I've disco'd/reco'd the battery dozens of times, and there are only two effects that I need to correct upon reco:
1. Re-init active steering (annoying but easy).
2. Reset the time and date.
All other settings, etc. are remembered.
1. Re-init active steering (annoying but easy).
2. Reset the time and date.
All other settings, etc. are remembered.
10-15-2005, 05:32 AM
#3
Contributors
Thread Starter
Join Date: Aug 2005
Location: Austin TX
Posts: 6,554
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: 2014 X5 xDrive 5.0 M Package Carbon Black Metallic/2008 M Roadster Imola Red
Originally Posted by Merzbow' date='Oct 15 2005, 04:04 AM
I've disco'd/reco'd the battery dozens of times, and there are only two effects that I need to correct upon reco:
1. Re-init active steering (annoying but easy).
2. Reset the time and date.
All other settings, etc. are remembered.
1. Re-init active steering (annoying but easy).
2. Reset the time and date.
All other settings, etc. are remembered.
[snapback]184533[/snapback]
10-15-2005, 07:14 AM
#4
Super Moderator
Join Date: Mar 2004
Location: Pittsburgh, PA USA
Posts: 17,310
Likes: 0
Received 2 Likes
on
2 Posts
My Ride: G30 M550i
Model Year: 2018
Originally Posted by donv' date='Oct 15 2005, 09:32 AM
How do you re-init the active steering?
[snapback]184566[/snapback]
10-15-2005, 09:11 AM
#5
Contributors
Thread Starter
Join Date: Aug 2005
Location: Austin TX
Posts: 6,554
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: 2014 X5 xDrive 5.0 M Package Carbon Black Metallic/2008 M Roadster Imola Red
Originally Posted by Rudy' date='Oct 15 2005, 10:14 AM
[quote name='donv' date='Oct 15 2005, 09:32 AM']How do you re-init the active steering?
[snapback]184566[/snapback]
[snapback]184595[/snapback]
[/quote]Thanks very much Rudy. Interesting, the info about the need to re-initialize some settings after a temporary power loss is at least in the 2005 530i manual. Aren't all the 5 series manuals the same? I'll look at/in mine.
10-15-2005, 09:39 AM
#6
Contributors
Thread Starter
Join Date: Aug 2005
Location: Austin TX
Posts: 6,554
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: 2014 X5 xDrive 5.0 M Package Carbon Black Metallic/2008 M Roadster Imola Red
Originally Posted by donv' date='Oct 15 2005, 12:11 PM
[quote name='Rudy' date='Oct 15 2005, 10:14 AM'][quote name='donv' date='Oct 15 2005, 09:32 AM']How do you re-init the active steering?
[snapback]184566[/snapback]
[snapback]184595[/snapback]
[/quote]Thanks very much Rudy. Interesting, the info about the need to re-initialize some settings after a temporary power loss is at least in the 2005 530i manual. Aren't all the 5 series manuals the same? I'll look at/in mine.[snapback]184617[/snapback]
[/quote]Yes, all one apparently needs to know is on p. 206 on my 545i/5-series manual (i.e., all 5-series manuals the same). The things that are supposed to need resetting either manually or by waiting are active steering; seat, mirror, and steering-wheel memory; time and date; radio presets (mabye); and navagation system. All but the navagation system must be done manually. No mention of false warnings of any kind occurring after disco/reco-ing the battery. But, with computers, many unpredictable things happen.Any thoughts about globally resetting the ECU or any extant learn function on the 5 series? Please see original post.
Thread
Thread Starter
Forum
Replies
Last Post
spitfire23
E60 Discussion
1
05-12-2015 04:23 AM