how do i reset the theft system?

Hello,

These cars had a problem with the two small wires at the ignition tumbler breaking causing the alarm to stay on. Let try to disarm the system first though please follow this guide.

https://www.2carpros.com/articles/how-to-reset-a-security-system

If it wont reset here are diagrams below to help you check to see if the wires are the issue. Check out the diagrams (Below). Please let us know what you find.

If you are getting a message, and a no crank, you have a theft system problem. Easiest way to isolate it, is to check that the ignition cylinder is not at fault. If you know how to use a voltmeter, and can accomplish some simple trim disassembly, you can figure it out. Remove the lower insulator panel from under the drivers side of the dash. There is a large connector, that is held together with a 7mm hex bolt, disconnect that connector(it will have the flat turn signal and wiper switch connectors integrated). There is an orange wire conduit with two small white wires, that go to the wiper switch connector, two terminals on the end of the connector. Connect the ohmmeter across these two wires, insert the key, and rotate to all positions. You should see the same resistance value across all positions. somewhere in the k(1000) ohms range. This is the resistance of the key pellet(or should be). My guess is, you are going to see open circuit at some time, or all the time. This would indicate your ignition cylinder(not switch) is faulty. Replacement requires steering column disassembly, at least below the lock plate and turn signal switch, and also requires some special tools. If you haven't, try a second key to see if you get same result. If you do, it needs a cylinder.

Thanks for this post. It took me a bit but I found the broken wires you are were talking about and fixed them car runs great! I love this site.

When you turn the key the dash reads " starter disabled anti-theft". Tried the second set of keys and still the same. What to do??

the wires on the lock cylinder may have broken form use over the years.

get it checked at a shop to confirm.

Roy

Thank You ....I will have it checked

Computer problem
1997 Cadillac SLS V8 Two Wheel Drive Automatic

i have a 1997 sls will not start do to anti theft problem.it says starting disabled do to anti theft problem how do i fix or bypass it

You can fix it by replacing the ignition lock cylinder, with new keys. Bypassing it requires a known key resistance value, and installing resistors of said value across the ignition cylinder wiring at the column base connector(two small white wires in orange conduit.

Computer problem
1994 Cadillac SLS V8 Front Wheel Drive Automatic

the theft system light n my car keeps coming on causin it not to start if i play with the door locks sometimes it will start other than that i dont know what to do

The content theft deterrent, which relates to door locks, should have no affect on starting. I would guess that you have an issue with the vehicle theft deterrent, and it is coincidental that it periodically starts. Usually what fails is the ignition lock cylinder.

Computer problem
1995 Cadillac SLS Front Wheel Drive Automatic

as i go to start my car i get a msg and it says starting disabled do to anti theft system. all i hear is a clicking sound under the hood as i start the ignition.

youtube is full of videos on how to bypass the pass system