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.
Car Won't Start and Security Light is On on Cadillac Seville STS
Average mileage: 123,494 (10,023–201,003)
40 people reported this problem
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
1997 Cadillac Seville STS 130,000 mi, Visitor
car wont start anti theft system
1996 Cadillac Seville STS 130,000 mi, Visitor
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!
2000 Cadillac Seville STS 92,000 mi, Visitor
Just won't cramk and says check theft system
1999 Cadillac Seville STS 171,000 mi, Visitor
Car will not start battery good.
Key inserted but engine did not turn over and security light and message come on
2002 Cadillac Seville STS 89,900 mi, Visitor
car will not start or turn over there appears to be no electrical working in the car new battery,
2000 Cadillac Seville STS 125,000 mi, Visitor
Car won't start service theft system comes on dash car will not turn over
1999 Cadillac Seville STS 188,000 mi, Visitor
Car sometimes turnover &sometimes don't and when it does start runs bout 20 seconds and then shuts off/with new battery
2002 Cadillac Seville STS 155,550 mi, Visitor
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.
2000 Cadillac Seville STS 143,000 mi, Visitor
Car will not start , no doorlocks,no radio,or Windows doesn't work security light stays on .
2000 Cadillac Seville STS 82,000 mi, Visitor
Still waiting to get it fixed