Seville STS

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

Problem Description and Possible Solution

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.

Problem Data
RepairPal Verified
Average mileage: 125,572 (10,023–201,003)
13 model years affected: 1990, 1991, 1992, 1993, more1994, 1995, 1996, 1997, 1998, 1999, 2000, 2002, 2003
51 people reported this problem
Viewing 1 - 17 of 17 comments
car wont start but the security light keeps lighting up
Anti theft system saying car may not start problem with the 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
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
car wont start anti theft system
Car will not start battery good.
car will not start or turn over there appears to be no electrical working in the car new battery,
Key inserted but engine did not turn over and security light and message come on
Used the key fob to open the door manually, now the anti-theft system won't let me start the car. How do I reset the ant-theft system?
Car won't start service theft system comes on dash car will not turn over
Car sometimes turnover &sometimes don't and when it does start runs bout 20 seconds and then shuts off/with new battery
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