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Voltage regulator
Posted: Mon Jun 19, 2023 2:26 am
by pencile
I have a 2014 R1200RT that I had my son install a new battery on. He put the battery in backwards. I heard the horn on it blowing for just a few seconds which got my attention. He didn't have it connected for long, so I then put the battery in corectly but the hron was still going off. The dash lights were good and the bike actully started and ran, but only at high idle. Then the voltage regulator got hot. I trurned it off and dosconected the battery as soon as I seen that. Looks like I need a new Voltage regulator, I hope thats all that happened. Any ideas if such a thing might have taken anythiong else out? Mostly concered about the just high idle with no control.
Thanks!
Re: Voltage regulator
Posted: Mon Jun 19, 2023 1:38 pm
by Doctor T
Check the alternator as well
Re: Voltage regulator
Posted: Tue Jun 20, 2023 4:55 am
by pencile
I compared the readings with an ohm meter from a good one, the only way I know how to check it without a good votage regulator. They ohmed out the same, that is to say I donesn't seem have any open windings. If that means anything at all.. Hope so!! There wont be any engine removal on this guy.
Re: Voltage regulator
Posted: Tue Jun 20, 2023 7:16 am
by sakm
The voltage regulator will get hot as that's how it gets rid of the excess voltage that's how shunt regulators work.
Knowing if its too hot is a different story!
Are you getting good voltage to the battery?
Re: Voltage regulator
Posted: Sun Jul 02, 2023 11:03 pm
by pencile
Well i replaced the vloltage regulator, and still the horn is still constanly going off. not sure what to do next. this is all happening with the key off. i disconected the ecu as well and still it happens. i can see a spark when i try to connect the negative terminal. seems to be short in somthing or somewhere. i'm kind of lost now.
Re: Voltage regulator
Posted: Tue Jul 04, 2023 3:30 pm
by Steve398
I think you may have to talk with BMW.
I have a friend who did the same on his wife’s Mercedes sports car, it destroyed the numerous ECU’s and the car, despite being only 2-3 years old, was written off by the insurance company. I hope you have a better result.
Re: Voltage regulator
Posted: Mon Nov 27, 2023 11:17 am
by onechriswood
pencile wrote: ↑Mon Jun 19, 2023 2:26 am
I have a 2014 R1200RT that I had my son install a new battery on. He put the battery in backwards. I heard the horn on it blowing for just a few seconds which got my attention. He didn't have it connected for long, so I then put the battery in corectly but the hron was still going off. The dash lights were good and the bike actully started and ran, but only at high idle. Then the voltage regulator got hot. I trurned it off and dosconected the battery as soon as I seen that. Looks like I need a new Voltage regulator, I hope thats all that happened. Any ideas if such a thing might have taken anythiong else out? Mostly concered about the just high idle with no control.
Thanks!
Did you get a resolution to this issue mate?