How do i fix a pats theft light flasshing fast??

Hello, You have a very common issue. And here is how to read the code it has stored: https://www.youtube.com/watch?v=BSPWKKYb5oI The code will tell you why the theft light is flashing, and then you will need the repair manual to run through the diagnostic flow chart.

try your spare PATS key,see if same thing happens. any work been done on it recently,like replacing the heater core,dropping the steering column?