Headlight not turning off after powering down

Having Problems with your BMW R1200RT/R1250RT? or have some Maintenance and Service questions?
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cdk
Posts: 1
Joined: Sun Jul 06, 2025 6:27 am
Bike Model and Year: 1200 RT 2015
Canada

Headlight not turning off after powering down

Post by cdk »

I replaced my battery and foolishly put in the battery backwards. When I went to attach the negative (which was actually the positive) terminal the horn sounded. I realized something was wrong and saw my mistake. I put the battery in correctly but now when I power down the bike my headlight doesn’t turn off. Any suggestions?
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Steve398
Posts: 1131
Joined: Thu Jul 11, 2019 8:41 pm
Location: West Sussex, UK
Bike Model and Year: R1200RTLC, 2018
Has liked: 584 times
Been liked: 490 times
Isle of Wight

Re: Headlight not turning off after powering down

Post by Steve398 »

You’re not alone, there’s been a couple of other posts from owners who’ve done the same thing…
Cum Dubito Desisto
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Valentino23
Posts: 9
Joined: Thu Feb 15, 2024 4:12 pm
Bike Model and Year: Honda CRF 450R
Been liked: 2 times
Canada

Re: Headlight not turning off after powering down

Post by Valentino23 »

Oof. Reverse polarity strikes again. Sounds like you may’ve fried a relay or ZFE module.
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