Battery Change - BMW Luxury Touring Community
 
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post #1 of 7 Old May 14th, 2012, 1:59 pm Thread Starter
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Battery Change

Im replacing the battery on my 99' LT. before changing the battery is there anything I need to be concerned. When unplugging the old battery then installing the new one. Do I need to reset the codes in the computer etc. Thanks this is the first one done on a BMW by me Paul
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post #2 of 7 Old May 14th, 2012, 2:15 pm
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Re: Battery Change

I just completed my first one yesterday. I replaced mine with an Odyssey which was a bit more involved than a straight replacement of the standard battery. A few things to keep an eye open for:
1. Make sure you unlock/disarm the alarm before you disconnect remove the battery. I didn't and let's just say it was awful loud in my garage while I ran for the keys....!!
2. Disconnect the negative terminal first, and make sure it does not droop back onto the terminal while you're disconnecting the positive. This is to make sure you don't accidentally touch a wrench onto the frame and generate a nice spark.....
3. It's apparently not uncommon to miss re-connecting one of the 2 wires that are on the positive terminal when you connect the wires onto the new battery. Make sure you reconnect all wires, not just the main one. And make sure you reconnect positive first, and only then do the negative once the positive is done (again, avoid a big spark from accidental wrench contact to frame).
2. Once the new battery is in and reconnected, it's likely your key fob won't work straight away. It took me about 10 re-tries before it started working again - and searching this forum that is apparently normal
3. Unless you're really quick, you need to do a throttle reset once you're all done. From memory you need to turn on the ignition (but don't start the bike), fully open and then close the throttle three times, then turn off the bike.

From there you're done. Pretty simple, unless the battery has a different shape, has different terminals etc in which case there's a bit of messing around but it will all work out in the end.

Hope this helps and good luck!

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post #3 of 7 Old May 14th, 2012, 2:53 pm Thread Starter
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Re: Battery Change

Thanks alot the battery is a WestCo battery and looks like the size is fine for fit maybe a bit smaller but not by much
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post #4 of 7 Old May 14th, 2012, 6:11 pm
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Exclamation Re: Battery Change

I recently replaced my original battery With the WestCo battery from Beemer Boneyard which was an exact replacement. Before I started the bike I followed the procedure in my service manual by turning the ignition on and opening the throttle 3 times and then shutting off the ignition. I fired up the bike and it wouldn't idle. I drove the bike for 50 miles but it still wouldn't idle. I disconnected the battery and started over with the procedure in the service manual. It still wouldn't idle. What I found out is after putting some miles on the bike and shutting it off a few times everything went back to normal.
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Originally Posted by PaulStaske
Thanks alot the battery is a WestCo battery and looks like the size is fine for fit maybe a bit smaller but not by much
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post #5 of 7 Old May 14th, 2012, 8:02 pm
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Re: Battery Change

I have disconnected the battery several times. Each time as SoCalHoss stated, the bike would not idle correctly. I did the throttle reset thing also. The only thing that fixed it was driving it a while. And as Rowie said, just pay attention and don't forget proper procedure for changing any battery.
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post #6 of 7 Old May 15th, 2012, 8:13 am Thread Starter
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Re: Battery Change

Thanks again I'm planning on changing the battery out this morning. Will let you know how it goes. One thing though is the ABS lights have been flashing and it caused by the old weak battery. So after I change out the battery do I need to have the codes reset on the computer?
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post #7 of 7 Old May 15th, 2012, 9:46 am Thread Starter
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Re: Battery Change

I just changed the battery and everything went fine only took about 30 min. now the front tire is getting replaced from BT 020 (7k miles) to Metz. ME 880. Next will be finding a used excaust system cheap
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