Starting disabled due to theft system?

the ignition switch is bad, its not reading your key?

This guide can help fix it

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

Please let us know

Engine Mechanical problem
1996 Cadillac Seville V8 Wheel Drive Type unknown Automatic 117264 miles
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My car shut the engine after a few second i started then all my lights flashes and in the board reads theft system problem car may not start my radio goes off my heater goes on for a few minutes even if my key is off the engine. I try to open the door open and closing the car with the keys to see if the car alarm resets but nothing also i disconnet the battery to see also nothing.Please tell me what to do next

[quote:8dade2cfe1="carmyn0107"]Engine Mechanical problem
1996 Cadillac Seville V8 Wheel Drive Type unknown Automatic 117264 miles
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My car shut the engine after a few second i started then all my lights flashes and in the board reads theft system problem car may not start my radio goes off my heater goes on for a few minutes even if my key is off the engine. I try to open the door open and closing the car with the keys to see if the car alarm resets but nothing also i disconnet the battery to see also nothing.Please tell me what to do next[/quote:8dade2cfe1]

does your remote for the doors work? also sounds like a Ign switch

Electrical problem
1996 Cadillac Seville V8 Two Wheel Drive Automatic 152.30 miles

i just purchased a cadillac seville last night my dash read security malfunction car maynot restart. this morning the car would not start and the display read starting disabled please remove key someone told me this would be 1000 to fix if i took it to a dealer . is this true.

It is possible that the security malfunction message and the "Starting Disabled, Please Remove Key" message you are seeing on your Cadillac Seville are related to issues with the vehicle's anti-theft system. However, the cost of repair can vary depending on the specific cause of the problem and where you have it serviced.

In many cases, this type of issue can be related to the PassKey or PassKey II anti-theft system used in older Cadillac models. These systems rely on a transponder embedded in the ignition key to communicate with the car's immobilizer system. If there is a problem with the key, the ignition cylinder, or the anti-theft system itself, it may prevent the vehicle from starting.

The cost of repair will depend on what component is causing the issue. If it is related to the key or ignition cylinder, the cost may be lower compared to a problem with the immobilizer system, which could involve more complex diagnostics and programming.

I have a 1994 SLS, V8 Northstar.I cannot get my car started. the on board message tells me "starting disabled due to theft system". Other than paying a Cadillac Dealership over $500.00 any suggestions? I already tried unhooking the battery and cleaning the keys off.
Thanks for listening!

is the anti theft a after market product? see if there is a button under the drivers side. it is hard to see and is small. if there is press button before putting key in ignition. while holding the button turn the key on. you can also try putting the key in the door and turn the key to unlock the door twice. does not re-lock the door. sometimes this works. do you have a remote to unlock the doors? Anti theft systems are sometime very sensitive so you might have to do it a couple of times before it resets. let me know what happens.

Okay, I have tried your suggestions, Unfortunately nothing.
Any other suggestions? I got some information on by passing the VATS, But when I try locating the wire (orange one running down the steering column) we cannot seem to find it. Is there a difference in that stuff on a 1994 Cadillac Seville SLS?
Help!

was there a button? is there a light on the dash that blinks?

No, there was no button, and yes the "security" light did blink.
Thanks

I have a 1991 El Dorado and when this happened to me i had to by a whole new key whole thing (sorry my car knowledge is bad) but yes that ran me $700.00. the wire got cut inside it and the sensor was bad.

Wow, that was a relief, I got a great set of instructions and images of wiring inside the steering column and bought a $2.00 resistor from radio shack and voila it started!
If anyone has this problem and wants to try this solution, I still have the instructions.

Thanks

I just bought a 96 Cadillac Seville STS ..... the seller said all it needed was a new battery and to have the computer reset. I replaced the battery and it cranked up but it died after a few seconds... then a mechanic told me that i needed to replace the ignition switch and key because a wire inside was broken. I had that replaced and the car started and ran great, other than the Theft Problem Message... and no radio, AC, fuel or temp gauge ect. When i got it home i started it up multiple times in the driveway....but it still had the message saying " Theft System Problem... " so put the key in accessory position and i waited awhile...i was told to wait 10 mins..... while waiting the radio came on and the AC lights were on but no air blowing and the fuel and trunk switches worked...weird... I read that unhooking the battery for an hour would reset the computer so i tried that but now it started doing the same thing as before... shutting down after a few seconds and won't run. Its very strange that some things start working then they stop working... i also tried to get codes by holding the off and warmer up but got nothing......

I bought the car at a large auction that has onsite mechanics. They first offered to deactivate the security system. I mentioned that I read online that the key switch may be the problem. They checked it and said that the wire was broken. He said he would go to a local GM dealer and get a new cylinder and key. After an hour or hour 1/2 he called me and said that the car was working, he had installed a new cylinder but that I would need to have the computer re-programed still. Everyone there was very helpful and seemed trustworthy but I was wondering if he installed the incorrect key/cylinder. Maybe the wrong pass key resistance. Not sure. Still not working today and no lights on the center console either. Just flashing on gear indicators and same message Theft System Problem Car May Not Start. I wouldn't mind just bypassing or deactivating the theft system. If its not to difficult.

how do i reset the computer? ...please help...i need to get this car working.

any way you could email me that solution to your problem. i am having the same situation with my Cadillac and it is driving me crazy. i did try putting the resistor in but nothing happened. possibly i did not do it properly . thanks for your time.

Did you get the theft system re-programed? if not Im surprised it starts at all with out that reprogram the theft system doesn't recognize the key. The system must be re-programed at the dealer for it to work right. There is a chip in the key which is now different.

I have the same problem. I have a 1990 Cadillac El Dorado and the dash says to wait three minutes then start. We have tried. It worked a couple of times, now it will not start at all no matter how long we try and wait. Tried to do a reset by the old school method, did not work. Need to fix this ASAP. My husband is a heart patient and this is the only car we have right now. It is a V8 engine. We will check all of the suggestions I have read so far and let you know if they work or not. Any other suggestions?

Hey Buzzsaw,
Thank You for the help. This car is crazy. i tried to put in the resistor to fool the theft system but i was getting the corect resistance that matched the key at the wire so i just reconnected the wires. when i tried to start it up... it was completely dead... i jumped it and it started and kept running....after letting the battery charge for awhile i cut it off.. it started again...and again...and again. i still have the Theft system message, the radio, AC, trunk release and fuel door ect. still dont work... i had popped the trunk with a key to check the fuses... but then it wouldnt shut...i then put the key in acc. position for about 10 mins and the trunk release activated...i think it must have a bad computer in it.... would the theft system cause all these issues ? I will prob. just try to auction off the car in a few weeks ... but i will continue to try to get tips to fix it before then. i really regret getting the car ; ; .... its a great looking car but it has a mind of its own :)

Okay, tried both suggestions. Unlocking doors did not work. Could not find a reset button or any kind of button under drivers side dash. Could it be somewhere else? There has to be some kind of driver/owner override somewhere! Can anyone help?

[quote:c7082a5bf8="paulingeorgia"]Hey Buzzsaw,
Thank You for the help. This car is crazy. i tried to put in the resistor to fool the theft system but i was getting the corect resistance that matched the key at the wire so i just reconnected the wires. when i tried to start it up... it was completely dead... i jumped it and it started and kept running....after letting the battery charge for awhile i cut it off.. it started again...and again...and again. i still have the Theft system message, the radio, AC, trunk release and fuel door ect. still dont work... i had popped the trunk with a key to check the fuses... but then it wouldnt shut...i then put the key in acc. position for about 10 mins and the trunk release activated...i think it must have a bad computer in it.... would the theft system cause all these issues ? I will prob. just try to auction off the car in a few weeks ... but i will continue to try to get tips to fix it before then. i really regret getting the car ; ; .... its a great looking car but it has a mind of its own :)[/quote:c7082a5bf8]

I know when money is tight, but things need to be fixed right. did you find the fuse panel in the trunk? and there is one under the hood also

Yes, I need the part number for the resistor and could you e-mail the instructions? have been having this problem and every thing that has been written thus far has not helped. I tried wiggling the ignition key switch back and forth and both times now the starter has engaged. thank you

hey buzzsaw,
yeah i found the fuse panels and cleaned the fuses. none of them were bad either....so i suppose the computer is bad because the theft system, radio, AC, fuel, temp ect dont work. The radio comes on sometimes even with the key out of the ign lol. it also must have a short because its draining the battery overnight. It seems like there are some major electrical probs with this car. Any advice.... how much would it cost to overhaul the electrical system or install new computer...im willing to fix it but i really dont want to spend alot more considering the milage on it... i would be lucky to get 2500-3000 for it even with it fixed :)

Hi, has anyone figured out your problem yet or are you still waiting as I am? thank you, Vermauso

Hello Sir,

I am having the same problem. Can you tell me what you did to fix it?

I am getting the message start disabled due to theft system. one wire on key cylinder was cut and reconnected . Info
on display says to remove key and wait 3 mins, still no start condition.Locksmith
says to remove resistor from key and solder purple and white wire to one side and black and wht to other side.will this work or howq do I find out what resistor out of 15 possible I have.

do you think i can get those instructions also, like everyone else anti-theft. thanks f you If could please help me out!

that will work. put ohm meter across the pellet and read resistance. if the pellet is no good then unfortunately you will have to use process of elimination to determine proper resistance, and wait 4 minutes between tries. there is no way to determine the resistor your car has.

Hello,

Yes you must take the car to the dealer to have the key reprogrammed to make the car work.

I am having this same problem with mine. Can you email me what to do to get this fixed? I am pretty lost when it comes to cars.

Thanks!

[quote:8a63396e1b="mastertechtim"]that will work. put ohm meter across the pellet and read resistance. if the pellet is no good then unfortunately you will have to use process of elimination to determine proper resistance, and wait 4 minutes between tries. there is no way to determine the resistor your car has.[/quote:8a63396e1b]

a caddy dealer has a machine that can tell you

i need to know what one to buy? 1991 Seville.

Take battery out an let car set over night or for a good 3 to four hours,then try it,I have an 88 seville an it has the theft system also an some time when I go to start I'll turn the key an it won't make a sound so I'll pop the hood take the battery out for awhile then put it back an wammmm it starts.I guess you some how reset all the computer info doing this.

There is no owner override. The VATS system on your car has about fifteen different possibilities of key values. You could measure the resistance of the key pellet minus your fingers (the body has continuity) and get a resistor that way, it still needs installed. You could also get a new cylinder and VATS key, have the wires put in the connector and tuck that under the dash. Otherwise, you need the ignition lock cylinder and keys replaced. The reason for the key replacement, is the new cylinder will have a different cut than the one you are replacing.

[quote:933fc9e1df="cpowder"]Take battery out an let car set over night or for a good 3 to four hours,then try it,I have an 88 seville an it has the theft system also an some time when I go to start I'll turn the key an it won't make a sound so I'll pop the hood take the battery out for awhile then put it back an wammmm it starts.I guess you some how reset all the computer info doing this.[/quote:933fc9e1df]

that wont work for this year, sorry

or go have you ign switch repaired right

Please I need your help. i would like you to send me those instructions and the part number for the resister. if you possibly can . i would deeply appreciate it. i bought my car six months ago. drove it one week and its been parked in my driveway ever since.. after a new transmission, starter, battery, brain,and a fly wheel. I finally got to drive it today. I got home parked her now it will not start up due to this irritating.
Thank you

working on a 91 seville and keys are lost. Owner ripped the column apart and trashed eveything

I replaced the battery on my cadi because it did not want to start hoping that was the problem. Since i installed the new battery i get an error message on control panel which says ( starting disabled due to theft system) i did exactly as instructed in manual which was to clean key, wait 3 minutes and try and restart, still nothing. I have followed many different suggestions including disconnecting the battery,unlocking both doors then starting, waiting 10 minutes with key in ignition partially turned over, still nothing. I don't have the money to take it to the dealers, if you have any suggestions they would be greatly appreciated!!!

Wow, that was a relief, I got a great set of instructions and images of wiring inside the steering column and bought a $2.00 resistor from radio shack and voila it started!
If anyone has this problem and wants to try this solution, I still have the instructions.

Please email me the information, that was successful, in them repairing their Cadillac? Where is the resistor located?.

if you have another key try that because the way you tried to reset it isn't correct but the thing is so old I forgot how to do it, this may be the diode type so try another key first. if you go to a place that installs anti theft systems they can probably help you out to get it running again.

I have tried both sets of keys. I don't have the money to take it to a car alarm place. I was out of work for 6 months and am barely working part time now. Why would Cadillac make this such i difficult issue that i have to take it somewhere to fix it?? I'm very frustrated. Can you please tell me who can i talk to that would remember how to reset the factory security system so that i can get my car running again??

Can you email the instructions or mail to me please?