Flashing Parking lights when key is off

[Randy1]

My parking lights go on and off when the car is off.
I had problems with the headlights flashing about 3 years ago and fixed it with spaying contact cleaner and air in the multi function switch and that fixed that. I tried the same thing several times to try and fix the blinking tail lights but doesn't work. I just replaced the (LCM) lamp control module but still does it. Somebody told me today that it could be the security module. Anybody have any thoughts. I'm thinking that the multi-function switch needs to be replaced. Is there a fuse or a way to shut down the (LCM) and just turn the lights on and off manually?
Any help will be much appreciated.