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Battery Idiot Light

2002 Views 14 Replies 9 Participants Last post by  PUG
I've got a 2016 Roadmaster with just about 750 miles on it. It's running great BUT, twice now, when the outside temps are in the low to mid 30s, the "idiot light" for "Low Battery Voltage" on the dashboard has come on and blinked all the way to work (about 15 miles). When I get to work, if I shut it down and restart the bike, the light stays off. The dash says that the charging voltage is 14.6 volts ALL of the time and nothing else acts like there is a problem. I THINK that I've figured out the issue. It IS an ambient temperature effect. That's apparent because it's always warmer when I get to work. The sun has risen and temps have typically risen to the 50s or higher (we're having a very warm November here on Long Island). The owner's manual says that the light illuminates when battery voltage is low, when the tire pressure monitoring system battery is low and when the key fob battery is low. I keep my key fob locked away in the garage so it and the TPMS battery (wherever THAT is) are being chilled overnight in the garage. If either (or both) are lithium ion batteries, that'll explain why they're OK at warmer temps and might cause the battery light to illuminate when they're cold. My hand held garage door remotes behave the same way; they work fine in warmer temps, but often don't work when it gets cold out. I'm gonna experiment with this by keeping the Indian key fob in the house overnight and, maybe, figure out what's happening.

A side note: the DynoJet Power Vision CX allows the user to view and toggle on/off a large variety of system functions. As an example; it can turn off the DTS trip when you deploy the sidestand while the engine is running. It'll be interesting to see if the "low battery light" can be tuned to ignore the condition of the key fob or TPMS batteries. I'll have to look into that. Personally, I'd rather that the "idiot lights" on the dashboard just reflect issues with the motorcycle's primary systems.
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· Founding member
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Make sure you can start bike with your 4 digit code. You only need fob for saddlebag locks.
Agree. Why carry batteries around and have them age when you can use your PIN if needed and then ride to any store and pick up a fresh one? Other than the OEM battery which was known to be old/faulty, I haven't had any issues with mine. I also prefer to change mine at home rather than losing the little screw while out on a highway.
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