2018 Pre-Collision question

We got some snow tonight in Tennessee. Went out and started the truck to let it warm up before taking off for a night drive. When I got in I noticed the Pre Collision System Malfunction, Trailer Brake Error, and check engine lights were on. I assumed it was because I hadn’t cleared the snow off the bumpers and sensor area so I got out and did that. It drove fine but I wanted to ask, since the lights didn’t go off on their own after driving around for 30 minutes, will the go off on their own later? Or is there something else I’m missing?

 

Check your battery voltage. Get it load tested at the closest auto parts store. Get them to pull any codes while you’re there

 

Snow on the sensor won’t cause a check engine light. Need to figure out what triggered that. The other pre collision lights are just secondary lights.

 

It's common for Pre-collision to come on in cold weather, it doesn't take much to throw off the sensors. Even down here in Texas, when it frosts, it turns on. It usually goes off after a while of driving. I agree with the previous posters though; the CEL though is indicative of this problem being something else. The battery check is a good idea, as low voltage can cause a slew of problems on these trucks.

 

Thanks everyone. It stumbled when it started and had a few seconds of rough idling. I’m wondering if it’s not the fuel pump issue I’ve read about but I guess that could cause CEL. It’s had a few instances in cold weather over the past week of rough idle for few seconds so maybe that’s it. I’ll also have the battery checked too, but the battery wouldn’t cause rough idle at startup I don’t think.

 

Yea, if it's rough idling, it may be a number of different issues. Best bet is to get a scan tool out and look at what codes it is throwing.

 

Well the warning messages are gone but CEL is still on. Maybe because I drove it probably 15 or so miles now to get the codes ran at O’Reillys just now. I’m putting the printout below for those more educated than I. Is this an “it needs plugs and/or coils” situation or do I still need to take it to the shop. I know misfire can cause rough start. But after the first start for the day it fires up like a new truck.
Thanks for any help.

 

For coils, you can swap them to one of the cylinders that isn't misfiring to see if it may be that. I'd pull the spark plugs and inspect them on the offending cylinders. It is suspicious that most of the misfires are on the left bank.

ETA: Did you happen to have your battery checked also?

 

I've got a 2018 TRD Sport that periodically has this same set of errors. The first time it happened was starting up at 0530 after a night at ~12F. All three of the errors cleared after driving about 60 miles/6 hours later. I wanted to believe it was due to the cold, as the temp when the dash lights cleared was about 55F, all of the ice on the truck had thawed, and it just made sense. Since then, I'll get the same three errors after a couple days of <20F temps and dusty/wet/rough driving. I usually spend about a week in these conditions, then spend 4-6 hours cleaning as much of the entire truck as my attention span allows. After a thorough cleaning, the errors usually resolve without any consequence, but it's been routine now for the set to come back when I get off road. No idea what causes it, but it doesn't actually have any effect on my driving, or the vehicle, long or short term.

Could this truck actually be so intolerant of "low" temps that it's systems can't function properly?