Voltage Issues

[chabbey]

Can anyone tell me what this means on the message center?
AUTO IDLE
SYS VOLTAGE 12.0V
THRESHOLD 13.4V

It started showing this after a fill up and 1/2 hour lunch. Getting back on the road, it kept flashing
BATTERY
LOW VOLTAGE

Then the Check Engine light came on.
I thought the battery wasn't used after starting. And this battery is only a few months old.

Any insight my friends?

[Billr]

Time to call. fcccservice@daimier.com
(800) 385-4357
They should know. If you have a volt meter, check the battery voltages on both banks of batteries just to be sure.


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[ceedog]

I get the low voltage warning on my Berk. It goes away after a few minutes. When I as at the factory in 2015, Randy & crew said not to worry about it. It's just a quirk of the charging system.

[chabbey]

Unfortunately it doesn't go away for me. The more items I have using the electrical system (GPS, radio, A/C, map light, etc), the more it keeps beeping.

And if I let it idle, it ramps the idle up pretty high. I hit the brake to put it back down, but in 30 seconds, it's back up again.

I'm pretty sure this is something I should address.

[bshort]

I've seen 2 month old batteries drop cells and quit charging. These were the expensive batteries from Napa. Load tester would help with your diagnosis as well as charging output voltage.