Screen and blower stay on after removing keys

[SRQAR240]

2016 AR240
about half a year ago very intermittently, my screen and the blower stay on after removing the keys
The only way to switch everything office kill the battery switches
I had it at the dealer, showed them the video I took but they said they couldn’t re-create it and don’t know what would cause this.

Hope to find an answer here!

Thank you very much in advance!

 

[gt5pilot]

I have had a key switch in a car fail both ways; fail to make a contact in the "on" position (motor would start but immediately die after disengaging the starter) and turn the key off and the motor would keep running. I do not know how the screen gets its power, but it is a possibility that the switch is giving an intermittent short to that key position?

 

[Marvin willis]

If it ever does turn off the battery switch and turn it back on Any time your blower is on it turns on the dash