Weird electrical issues still happening

MY 2020 does that when my master battery switch is in the off position. Not sure that helps you but you might try turning off then on again to check.

 

Might be your problem right there.

 

wait, I'm sorry,,,, you guys, I swear, now it's possessed new Freightliners, isn't there any value today, I mean, this is a 6 figure machine,,,,THAT DOESN'T WORK,,,sorry, am I the only one that thinks this is unacceptable? Terrible.

 

i would take it back to the dealer an make fix it or replace the truck under the lemon law.

 

@Irishblood_83 Your truck might have issues with the sSAM having too much loctite on the threads for the GND and supply cables. This would explain your issues of dome lights going on/off. BUT, I am curious about what you mean "security panel." Is this something aftermarket?

The BCA solenoid and cutoff switch don't have anything to do with this. Those are the number 1 improperly diagnosed parts, IMO.

Take your truck in and ask the tech to search for SS 1034884 Unintended Dome Lamp Activation.

 

@Irishblood_83 I'm not sure about the windshield wipers. They can have an issue "parking" when the park signal is not seen by the sSAM. This can occur after a keyon-keyoff event where the sSAM will attempt to park them even if the stalk switch is in the off mode. Most tech's don't really understand this nor test this circuit enough, extensively.

I would still get the sSAM power studs checked.