I have a '15 F250 Lariat & yesterday began experiencing an electrical issue. The 1st thing I noticed was that when I tried to lock the doors with the key thingy nothing happened. Just figured it was a dead battery in it at the time. Later, at dusk when I started the truck the lights didn't automatically come on as usual. Weird, I figured & just switched them on manually. I noticed the self dimming dash lights switched to night time mode shortly after & tried the automatic position on the switch & all was fine.
When I got out of the truck noticed that when I opened the door the interior lights started very dim & gradually came up to full bright. My headlights are set to go out immediately when I shut the truck off but they didn't. So I hit the lock button & they went out. The cab marker lights have always gone out after 20 seconds I think & they stayed on.
Somethings weird going on & am just wondering if anyone has experienced something similar? I'm hoping its a weak battery instead of something electrical in the truck but it was late when I got home to mess with it I will check the battery this morning.
Could I possibly need to re-boot something or maybe redo the settings on the lights themselves.
Wasn't sure this is the right spot on the forum but here it is...
Thanks in advance.

 

to reset
if gas engine... disconnect the one negative battery cable for 10 minutes , then reconnect
if diesel engine... disconnect both negative battery cables for 10 minutes.. then reconnect..

next is have battery (s)... tested... ask for the 100 amp LOAD Test...all others do not truly test a battery correctly.
then ask for a charging system test...

computers do not like unstable DC power.

 

Chuck that worked! All seems normal now. Thanks!

 

Thanks for the report back...

Drive Safe.