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Tail lights flasing after truck is parked

Noodles104

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Medina ohio
My 2021 custom Trail Boss has 20,000 miles on it and is entering its second winter. We've had some very cold temperatures here the last few days but I fail to see why this would cause the issue. Recently I've noticed that when I park the truck lock the doors and go in the house 15 minutes later I look out side and the tail lights are flashing for a couple minutes uncontrollably and then stop. Last time I went out and started the vehicle the left turn signal flashed for a second or two and then went normal. Has anyone else encountered anything like this?
 
That is very odd. No idea what to suggest on that one, sorry.

Actually, just read a similar thing on Reddit, apparently this could be an indicator of low tire pressures. Or maybe the cold is messing with the sensors?

I'm gonna look into this more...
 
Keep seeing the same thing in other online forums; low tire pressure warning.

Check your pressures and let us know.
 
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Keep seeing the same thing in other online forums; low tire pressure warning.

















































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































Check your pressures and let us know.































































































































































































































































































































































































































































































































If that turns out to be the problem that's a I really odd setting but I since you found that imfo- I will top off the tires today and let you know if that's what it was. I actually do remember the pressure light popping up on the dash yesterday so hopefully that is all it is but even so that's a very odd warning setting if it is. The lights do seem to be flashing in code though thanks for finding that I'll let you know in a little while
 
Thanks for finding that info .the lights do seem to be flashing in pattern ,they're not random so I will top off the tires today and let you guys know- I will say that I do recall the pressure warning light popping up on the dashboard yesterday so hopefully that's all it is but I will say that is a very odd setting if it is
 

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