Cabin temp resets to 80? .... amongst my radio things too...

On the heels of my usb thumb drive reset thread... WTH is with this truck resetting driving comfort items after sitting for a few days?

Today's Flog - One month old OR. It gets driven sometimes multiple times in a day, then may sit for a few days. This morning I got in to go and felt warm air flowing out the vents. Turn the fan on and it shows "80" for both cabin air temperature settings. I would never have it this high, let alone in summer. I also know it was nowhere near that on last usage, like 65 or more likely even LOW to get the coolest ambient air coming in.

I hadn't driven since last Thursday, so off for 4 days. Seems to have changed itself to 80/ Does anyone else's do this after sitting for some undisclosed timeout? I searched but couldn't come up with any hits.

This kind of goes along with my usb thumb port music resetting / reindexing thread. Similar thing - after sitting for a few days, it resets to the top of the entire song list. In conjunction with re-indexing every time the truck is restartedmad, music listening gets depressing on shorter runs.


Are these things related / seen by anyone else? I'm getting the impression that things time out for some reason they are not telling, and at some time frame not even mentioned. The usb could be seen as a HU "characteristic", but now I've seen something on the climate control side. Seems like lots of electronic control bringing down my driving enjoyment level.

What next, my headlight angles will reset because my blinker fluid tank condensed too much water into it and I have to wait for the antenna bleeder valve to evaporate enough water off?...

Any thoughts? And before anyone chimes in with "you shoulda test drove it derrp", these are issues I'm seeing only after the truck resting for a few days. Dealer drive would not show this stuff.

Thanks

 

I think you need and old priest, a young priest, and a rabbi. Never had this happen with any of my 3rd gens...

 

Check the battery

 

You have an electrical problem.

Have you done any electrical mods? If yes, start there.

If no, exercise that warranty that folks use to help rationalize jumping into a new vehicle.

 

Another vote for an electrical problem, a reset like that makes me think that there’s a bad ground somewhere.

 

Just checked (about three hours after this morning's run) - battery is sitting at 12.44v with truck off. Steady for the 30 seconds I looked at it, so no immediate draining noticable, and truck always starts vigorously. Seems good V for "new" and charged from what I remember...?

I originally checked the battery terminal mounts as well as the short wire ground mount nut to the chssis a few inches away on the first weekend. Part of my decently long checklist after arriving home. (Which also gave a slight short on AT fluid, and almost a full quart on rear diff...blah...)

Are the HU and climate controls tied to a commom power harness? I guess I could also check / reseat the fuses for these related areas and see if that helps. Kind of grasping there, I know. Are there other segments tied to either / both the HU and climate controls to keep an eye on? If these two reset I might catch something else acting up? I haven't noticed anything else yet.

My only issue with a woogity ground is, with all the bouncing around while driving I would hope the HU cutting out would show itself if it's a loose wire, and show at any point if a high resistance contact reducing supply V. All my issues only seem to happen once the truck is off for more than a day or two, and this climate one is a first today.

There's some really bad jokes and / or lawsuits mixed in with that subject matter lol...


ETA: Sorry... No, no electrical or any other mods yet beyond removing the rear seats for usable room

 

your 12.44 is surface voltage.

With your DVM in place, what does it drop to when someone cranks the truck?

 

Check after a few days sitting, before cranking

 

Yah, will check a bit later today... after we're both dressed and outside. In the middle of roasting garlic and drying tomatoes at the moment.

And this too, in conjunction with checking the cranking voltage as above, also after sitting. That way I'll have data for surface and crank freshly run (today) and surface and crank after sitting for a few.

I hadn't thought to get a "sitting for days" v reading before now, as I thought my HU usb drive was just a PITA issue that others had seen and possibly worked around. If it's electrical / hidden ground faulty... uggg. Too hot for me this coming week to deal with (me = banana when hot outside)

Thanks both !

 

12.44v is just over 80% of full charge (12.42v). Fully charged the battery should read over 12.7v.




As the truck is almost new I would say something isn't quite right, batteries are the weakest link in the system so start there first with a load test - a real load tester is about the size of a old style kids lunchbox by the way.

Notice the size of the battery clamps, this style has a carbon pile resistance inside, it pulls 300 amps from the battery when testing.

 

That was a difficult read. I stopped at the headlight angles, blinker fluid, and attenna bleeder valve ...

I will go with - it has warranty, let the dealer handle it.

 

Sorry, I get wordy sometimes
TLDR =
(1) Some non-drive critical issues at startup after sitting a few days, beginning to check into battery / dash electrical
(2) Blinker fluid evap valve busted

(apologies, the whole comic concept of blinker fluid just floors me sometimes and I have to get it out of my system lol...)

 

Anyway, I will probably look into getting the 'new'ish battery load tested. But I will also be trying to figure out the timing causing my now potentially two related issues, which requires waiting a day or three without driving. This can't overlap the battery test as I'd need to drive it somewhere. As I said, the climate control only happened today for the first time. I began to brush aside the usb drive issue as just "it is". If climate-gate doesn't come back (or anything else new shows up) then I'd be back to just the goofy usb functioning. May just go 'meh' if that happens.

Let you know in a week or two if anything turns up. Thanks.
Arc'