Car Won't Start and Security Light is On on Cadillac Seville STS

Problems with anti-theft systems using the raised-chip key can prevent the car from starting. The wires in the steering column to the ignition lock cylinder tend to break. The key and ignition lock cylinder should be replaced to correct this condition.

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Average mileage: 122,934 (10,023–201,003)
12 model years affected: 1990, 1991, 1992, 1993, more1994, 1995, 1996, 1997, 1998, 1999, 2000, 2002
37 people reported this problem
14 people shared problem details
car wont start but the security light keeps lighting up
Anti theft system saying car may not start problem with the theft system
car wont start anti theft system
Every once in a while, I will go to start the car and it will start and turn right back off, and security light comes on!
Just won't cramk and says check theft system
Last night car started fine now it won't start atall. It won't even turn over and there's this non-stop dinging sound even with the keys out and the door closed. And its a brand-new battery like 3 days old
Car will not start battery good.
Car sometimes turnover &sometimes don't and when it does start runs bout 20 seconds and then shuts off/with new battery
Key inserted but engine did not turn over and security light and message come on
It still is not fixed. Car would not start. It is not a bad battery
No prende y la luz de seguridad se mantiene encendida. Revisamos la continuidad de la cableria y reparamos varios cables. Y ya funciona bien.
Car will not start , no doorlocks,no radio,or Windows doesn't work security light stays on .
Still waiting to get it fixed
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