Lights randomly come back on

[Greatest of all Tims]

Hi guys. The last 2 days I've seen some weird power things happening. First, it appeared that my truck auto started on me or never turned off properly when I know I had turned it off before exiting the vehicle. That's been 1 occurrence so far. The next thing is a little more alarming as it's happened consistently for 24 hours; I would turn the truck off, watch all the lights turn off and 10 minutes later, headlights would be back on. I even manually turned the knob for my lights to be off. My worry is battery draining and I'm stuck somewhere. I've had a neighbor come tell me they were on all night and 3 different coworkers at different times throughout the day tell me my lights were on. I'm at a complete lost, any help would be greatly appreciated! Thanks everyone!

 

[smurfslayer]

I strongly suggest and old priest and a young priest.




If you lock the truck via remote and then press the lock button again quickly, does the truck holler back at you? How many times?

Any Ford Pass alerts or DTC (check with FORSCAN)?
If we don’t find something simple, I’d start the scheduling process for a stealership visit.

 

[Greatest of all Tims]

When I lock via remote and double click it like I usually do, I get the standard 1 beep reply. And no FordPass alerts, just the regular time for an oil change stuff.

 

[smurfslayer]

After you lock the truck, hit the lock button 2 x again. how many beeps?

1 is good.
2 can mean that the truck detects an open door ( or hood ).

 

[Greatest of all Tims]

Yeah, it's 1 beep. Hate that I'm probably going to have to rely on the stealership.

 

[smurfslayer]

do you know it Sync is powering up, or is it just the lights?
Years back we had a user with a parasitic drain. Stealership found it by putting a video cam in the cabin overnight.

 

[FordTechOne]

Anything aftermarket installed? If the BCM doesn’t receive a valid signal from the headlamp switch, it defaults the headlights to on. As the others said, ForScan can pull DTCs.

 

[Greatest of all Tims]

Doesn't look like sync or anything else is on. Just the headlights.

 

[Greatest of all Tims]

And there's nothing aftermarket on it. Everything is unplugged from the power outlets as well, just in case.

 

[Greatest of all Tims]

Ok, so I sat in the truck still. Powered off, and locked it. Less than a minute later, the steering wheel dash would blink and light up, showing the truck in park. A few seconds after that, the headlights turn on. Truck is still off. Found the setting for Daytime lights and turned them off. So far so good.....