please help. when i turn my car off, the dashboard lights and the radio stay on. it goes off after maybe a few minutes, but even if it does and i then lock the car, the alarm keeps going off for no reason. what is this? p.s., this mainly happens after i take the car for a drive.

 

Option 1- have a locksmith look at your barrel and see if the pins are sticking.

Option 2- Have your computer put on the machine at lexus and tested, but before you do check ALL main grounds in the vehicle.