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Changing the battery in R1150RT


motorman587

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Just replaced the gel battery on my 04RT and heres what I did by guess and by golly:

Take off the tupperware (of course you have to do this for any kind of RT maintanence). Next Remove the bolt on the right hand side securing the gas tank so you can raise the tank a couple of inches to access the battery. Disconnect the cables and all your farkles from the battery terminals. Remove the air intake on the left side. You may have to remove the top cover for your air filter for this step. Now you'll notice the rubber straps holding the battery in place. Remove them. Slide the battery out of its tray to the left.

Slide in the new battery and reassemble in reverse order!

Voila! It worked for me. Good luck

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ShovelStrokeEd

A couple of other things.

 

Always remove the negative terminal first and connect it last.

 

Since you have an 1150, when you re-connect the battery, the ECU will have forgotten the TPS range settings and any long term adaptive stuff. So, first thing after reconnecting the battery, turn key on, but do not start the bike. Turn throttle from full closed to full open, twice. Then turn the key back off.

 

You may notice a little drop in fuel mileage and even some funny running for a tank or so. No worries, it (the ECU) is just relearning some of the long and short term trims.

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Can somebody walk me though it or send me a link.

 

Also have a battery out of r1200rt will that fit in a 1150??

 

Not sure about a stock 1200 fitting..Check height.... Kathys (1150RT) and my (1200RT) are using the same Westco battery....Not worded quite right; each has it's OWN Westco... :)....My bike did require a small block of wood under (or on top) the battery as it was a little short in height on the 1200 to clamp down tight......The Westco slips right in on the 1150.......Suggest measuring first and try it on for size....

 

 

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A couple of other things.

 

Always remove the negative terminal first and connect it last.

 

Since you have an 1150, when you re-connect the battery, the ECU will have forgotten the TPS range settings and any long term adaptive stuff. So, first thing after reconnecting the battery, turn key on, but do not start the bike. Turn throttle from full closed to full open, twice. Then turn the key back off.

 

You may notice a little drop in fuel mileage and even some funny running for a tank or so. No worries, it (the ECU) is just relearning some of the long and short term trims.

 

Now I didn't know that!! So when I changed my battery a couple of hundred miles ago I didn't go through the process you described. Should I do so now or is it too late and I should just junk the bike? The bike still runs great as I took the opportunity to also do a tune up and TBS. Seriously, should I go through the steps you described or does it not make a difference now.

 

I never stop learning cool stuff on this board!!

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A trick I use is to put a plastic garbage can upside down against the left side of the bike to serve as a platform for the battery as it comes out. It is challenging to hold the battery in mid air while you loosen the cable connections.

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Seriously, should I go through the steps you described or does it not make a difference now.

 

Probably isn't necessary to re-set the TPS now. If you want to, just pull the #1 fuse (motronic) then put it back in and go through the procedure. ( Switch on, slowly turn full throttle twice, turn off ignition. ) I've had a very good master BMW mechanic tell me that resetting the TPS/Motronic is a myth and he never does it.

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ShovelStrokeEd

It's not a myth. It does save some time. Eventually, the ECU will learn the TPS sweep range by itself but, if you are the type that doesn't use full throttle all that much, it might take a week or so.

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Probably isn't necessary to re-set the TPS now. If you want to, just pull the #1 fuse (motronic) then put it back in and go through the procedure. ( Switch on, slowly turn full throttle twice, turn off ignition. ) I've had a very good master BMW mechanic tell me that resetting the TPS/Motronic is a myth and he never does it.

 

Al, it’s the #5 fuse on the 1150 for the Motronic not the #1 fuse.. The #1 fuse is the gauges & windshield..

 

 

Twisty

 

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Al, it’s the #5 fuse on the 1150 for the Motronic not the #1 fuse.. The #1 fuse is the gauges & windshield..

 

Twisty

 

Thanks for corrrecting me, Twisty. I had a brain fart. It is fuse #5 on the RT. Even though it may be a myth, I usually do the reset procedure because it's easy and can't hurt anything. If it's been a while since re-connecting the battery, I wouldn't bother.

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Hollow Road Rider

Sorry, but at the risk of sounding dumb... what is the "ECU" that will change the"TPS". And, while you're at it, what's the TPS?

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Sorry, but at the risk of sounding dumb... what is the "ECU" that will change the"TPS". And, while you're at it, what's the TPS?

 

ECU = Engine Control Unit (AKA Motronic)

TPS = Throttle Position Sensor

 

Andy

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A trick I use is to put a plastic garbage can upside down against the left side of the bike to serve as a platform for the battery as it comes out. It is challenging to hold the battery in mid air while you loosen the cable connections.

 

 

Yep, something that fits closely against the bike to hold it.

 

I've done the battery change a few times; it always seems to take at least an hour. The platform speeds it along, though.

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