I have a 2005 TL Base model. If I leave the key in the ignition, with the car running, and close the door, All of the doors lock on me. The only way to get back in is to manually open the door with the spare key. Initially I thought it was my viper alarm so i disconeceted it completeley. No luck there. I searched the forum and saw that other people solved the issue by changing the driver door actuator. I have just finished replacing that and am still having the same issue. Does any one else know another possible solution to this problem?

 

Maybe it's drivers door lock master switch

 

I am not familiar with that part. Can you elaborate?

 

Maybe you car doesn't like you anymore, and for some unknown reason, want's to say
.

 

The door lock switch in hour drivers door . Next to your interior door handle

 

I would suspect your viper alarm install definitely has something to do with it. Bad control module?