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Mark R Posted on May 17, 2019
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My BMW R1100 RT motorbike spluttered a bit then stopped and all electric power was lost. Freshly serviced with new battery and alternator belt, fuses look ok. Any ideas?

1 Answer

Ronald Emerson

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  • Expert 92 Answers
  • Posted on May 18, 2019
Ronald Emerson
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Mark,

Electrical problems are hard to diagnose at the bike and much harder to do remotely....Here is a link to the BMW motorcycle owners discussion board, you may find some answers there...Good luck.... I miss my RT !

https://forums.bmwmoa.org/showthread.php?75034-2004-R1150RT-Dead-Electrical-System-But-New-Battery!

5 Related Answers

basilfawlty

shaun watson

  • 39 Answers
  • Posted on Jun 30, 2008

SOURCE: volvo V70 electrical problem

had the same problem with an s80 this week- no warning lights nothing. was the regulator. when you have it fixed cancel all the trouble codes as when voltage is low everything registrs low signal input and makes the car go into get me home mode.

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Anonymous

  • 12 Answers
  • Posted on Dec 09, 2008

SOURCE: meter fuses keep blowing out on 1996 nissan altima

you have a short to ground somewhere. Look for worn wires, loose connections, any work recently done.

Anonymous

  • 99 Answers
  • Posted on Jan 22, 2009

SOURCE: 97 audi a4 no power/battery fuse?

Sounds like either the battery leads are on the wrong way round, or the starter main cable is touching something and shorting to earth. Retrace your steps and check your connection locations.
Either that or its a dead short through the starter. Remove main cable from back of starter and tape up incase of short. then reconnect battery. If ok now then your looking at starter motor.

TL

Anonymous

  • 1 Answer
  • Posted on May 19, 2009

SOURCE: 96 bmw 328i convertible...Top wont

i have a 325i bmw convertible and by mistake i pulled the release bar under the back seat and detached the motor for the convertible and know it doesnt want to open or close the convertible

Anonymous

  • 167 Answers
  • Posted on Jul 03, 2009

SOURCE: car will not start

Try running a wire from the little terminal of the starter motor to the Positive on the battery , Disconnect the little wire thats on there first.No need to turn the key on as we are bypassing this.This should cause the starter to turn.Make sure that if its a manual that its in Neutral.
If the starter motor turns then the problem is either the relay or the ignition switch.Or if its an automatic Transmission it could be the inhibitor switch .
Hope this helps
Cheers
George

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Related Questions:

0helpful
1answer

WHERE IS THE FUSE BOX ON A 2000 BMW R1100

moved you out of , cars to motorcycle had to guess last missing model letter (S)
the users manual covers this and is free if you search.
the service manual too covers this in spades.
2nd google hit.
free too. but is for S model and not told by you.
I had r1000s , mint restored.
https://www.manualslib.com/manual/368745/Bmw-R-1100-S.html

more here if you want

https://www.manualslib.com/b/bmw+r1100.html

all motorcycles, under see or tank .
really where else can they hide, some on headlight shell
RT'
words

1
Removing and installing central
electrical equipment box
e
Caution:
Switch off ignition.
Disconnect ground (earth) lead from battery.
Insulate ground (earth) lead.
•
Remove dualseat.
•
[RT] Remove small side fairing sections at left
and right.
•
[RT] Remove luggage rack/case holder.
•
[RS/R/RT] Take off rear fairing at left and right.
•
[RT] Remove lower rear section.
•
Take out retaining screws (1) for upper section of
central electrical equipment box.



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0helpful
2answers

Abs lights on my 1995 bmw r1100rs will not stop blinking

There are a number of comprehensive solutions for the BMW R1100 on youtube. Just search for "BMW Service".
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Looking for wiring diagram for instrument panel on BMW R1100 rt.

I have a 1998 BMW r1100rt, my horn would not work and while messing with the system, I developed the following problem. My flashers and turn signels will not work, the turn signels on the left side will come on when I turn the key on but won't go off unless I pull the fuse. I need help, 165 miles to the shop. Thanks
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1998 BMW R 1100 RT starter won't turn over. Bike won't start.

Alex ,
the battery is not your problem . it sound more like the starter motor giving you grief or alternator or regulator .
The electronic system on these are Bosch which are very sensitive to fluctuations of power .
Now when your starter draw power it really sucks power out of your battery and hopefully you have enough for the rest of the appliances .
the hard line of all this is that the battery may look good and hold the charge for a while but once the starter motor draw power to start the bike , you have very little power left to service the rest of power needed for the electronics . Make sure the alternator give you enough charge , test it while running , it should give you between 13.5 V to 14.8 V output or see if you accelerate the bike the headlight becomes brighter . If the light stays dole or dimms while giving a bit of gas , your alternator or regulator has a problem and will have to be tested and replaced .
have a look at all this and let me know how you go
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