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Battery drain/limp mode?


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Hey all, 

just recently started having an issue.  Truck doesn’t get driven much (if any) in the winter but I have been starting it two-three times a month and letting it warm up in the garage.  A few nights ago I decided to take it to the store on a nice night.  Started up initially pretty slow, felt like the battery had gotten a bit low so I took a long way to the store about 20 minutes or so to give the battery some time to charge, otherwise everything else was normal. 5 minutes after shutting it off about to head home it seemed to start on its last crank which was after just a second or two of ignition. This time the only gauges working were the tach and speedometer.  Abs/ airbag/ CEL/ battery warnings were all on.  I take the direct route home this time.  When I got it back in the garage and shut it off the radio (kenwood double din) kept running so I had to manually shut it off.  I let it sit on the slow charge overnight which brings us to where I’m at now.

 Everything still the same even with a full charge, the interior lights do not come on when I open the door or spin the dimmer all the way up, they do work when I push the button next to the lights on the ceiling.  Dash/gauges are the same, radio is still manually off.   This same thing seemed to be starting in the spring but I just put a new battery in and it was fine until recently.  I’m no electronic expert, or even close so I am hoping someone may have a starting point.  Like I said, this truck isn’t driven much in the winter so I have time to tinker with it.  

I’m hoping someone has a suggestion where to start or ideas what might be going on? A power drain somewhere?  Can a low battery cause a limp mode that needs to be reset? 


thank you! 

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  • 1 month later...

Keep in mind that sometimes the gauges can cause parasitic loss and can drain the battery. Let me know if you have any additional questions. 


Edited by silverado777 (see edit history)
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