So i left my truck and apu off for about an hour and went inside to get in my shower. Came out and none of my sleeper lights work. Truck starts fine and shows 14V though was at 12.2 when i first started it, it had no LVD message however. I let it idle for about an hour thinking the voltage was low anyway then went to check my fuses and nada. All the fuses in the bunk colum look fine and i checked the sleeper fuse under the dash and they appear fine.
Any idea whats going on? My only solution is bad batterys even though they are less then a year old.
Lost all power to sleeper and interior lights 2017 579.
Discussion in 'Peterbilt Forum' started by Arctic_fox, Jan 3, 2022.
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Do you have a battery cutoff switch?
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LoSt_AgAiN Thanks this.
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Does the apu work?If not reset the gfi plug in on it.
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APU and espar work fine. Only things that dont are lights, 12 volt sockets, and fridge.
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If your truck has a low voltage cut-off,the first thing it kills is the bunk area.
Starting the truck would've corrected that.
So either you have a bad cut-off relay or a different problem -
Lost all power to sleeper after LVD - 2016 579
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I found this earlier thread,might be your problem,fuse
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Yup that didnt fix it. I pulled and replaced every single fuse with fresh just to be sure and am now traceing the wires. Im out of ideas lol
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Last Call Thanks this.
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