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Messages - JanWi2026

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Downtown 300 / Re: ABS light stays on until Scooter restart
« on: June 03, 2026, 01:48:39 AM »
Hi Rufus,

Thanks for your thoughts. I have to admit that I didn’t change the battery after the alternator died and was swapped.

Now that I think of it, the problem occurred after a temperature drop (heading into winter here in the southern hemisphere) which may indicate a dying battery. AGM Battery’s age is unknown as I bought the bike with the current battery installed a year ago.

I’ll try and put a second battery in parallel to see if this fixes the issue. Fortunately my partner has the same scooter so I can pinch its battery for testing  :D

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Downtown 300 / ABS light stays on until Scooter restart
« on: June 02, 2026, 04:54:34 AM »
Hi all,

I have the following issue with my 2012 Downtown 300i ABS. It started randomly about 2 weeks ago.

When starting the scooter, the ABS light stays on and will only go dark when I restart the scooter immediately. This issues occurs on every start.

I had the ABS light coming on before when the alternator failed and subsequently the battery drained slowly. Once the alternator was repaired, the ABS light would go out once the scooter started moving.

So far I cleaned both abs sensors rear and front from metal flakes but no luck resolving the issue. Any suggestions what might cause this issue?

Btw I’m from an engineering background and used to work on classic vespas, so mechanically I’m very savvy but the ABS system is an unknown to me.

Cheers
Jan

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