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

Problems with the 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 the key and ignition lock cylinder must be replaced to correct this condition.

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Average mileage: 118,249 (13,000–240,000)
15 model years affected: 1990, 1991, 1992, 1993, more1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
80 people reported this problem
59 people shared problem details
Car won't start, security. Installed resistor under dash, bypassed resistor antitheft. Car starts every time!
car seemed to be running fine.picked my grandson up from preschool and stopped at the store on the way home.turned off the car went inside for approximately 15 minutes. when i came out i put the key in the ignition.all dash lights came on but nnothing happened when i turned the key to start it.i tried getting a jump but still nothing. i ended up having it towed home.after doing some research came to the conclusion it was my anti theft system. i asked a mechanic friend to look at it to confirm which he did.unfortunately i cant afford to pay my local dealer to fix it so its been parked for 3 months. i have had to take a taxi to work or depend on friends and family for a ride.i am really disappointed with cadillac for being aware of this problem and not fixing it or at least recalling it.
1994 Cadillac DeVille180,000
the car wont start due to anti-theft system, it will say wait three minutes then start, but repeat this process 4-5 times
2002 Cadillac DeVille240,000
Well the anti theft light came on and off so today I try to start it there is nothing lights and everything came on tried getting jump nothing the security light is flashing
1996 Cadillac DeVille133,000
the anti theft light comes on on the dash and says the car may not start
1992 Cadillac DeVille188,000
The car turns over but won't start. Let it sit for about 3 hours and It fires right up. The car starts beautifully when it wants to. I got stuck at the store left the car came back the next day and it started right up. I have no idea what it is. No machanic in my town knows and there computers don't know. No check engines light nothing indicating something is wrong.
1992 Cadillac DeVille140,000
car not cranking over does nothing.security light is on
anti-theft (anti-owner) system.
1995 Cadillac DeVille180,000
The Cadillac dealership can check the key in less than a minute to determine if the chip is good. The next step is the ignition switch. They are known for the two wires to break, but my ignition switch was bad.I bought an AC Delco switch for $40 and Midas charger $107 to install it. I did have to get Cadillac to cut and program the key. That was another $40 Good Luck
1991 Cadillac DeVille120,000
car wont start anti theft system
1997 Cadillac DeVille155,597
my car will start theft system problem. we bought a new key and the cylinda is good how do i fix it or went can do check.
2000 Cadillac DeVille105,555
Key Won't turn And Security light is Flashing.
Check solniod wire no fire will not start anti theft light stays on
1993 Cadillac DeVille122,000
car will not start
theft system car may not start bought it to dealer on friday still not fixed says needs ingition lock & coumpter box maybe 500 bucks
2001 Cadillac DeVille150,000
When the drivers door is all the way open it turns on 2 lights in dash one is security light
1999 Cadillac DeVille154,568
I jump it and put cables on back words.now it just turns over and wont start
car won't start after losing key and getting new one anti theft light comes on several attempts before car starts
Drove to restaurant, left car for lunch, returned to find key would not start car without 3 minute wait. Happened a second time. On the third try (after a second 3 minute wait) car started normally. Later happened again on the same day but with only one 3 minute wait. Dash info directing events both times.
its a fleetwood, starts on 4 cylinders, runs for about 10 20 sec. the the other 4 kick in and runs fine for a while then shuts off, and hard to restart but when it does start, it starts on 4 cylinders, then the other 4 kick in and runs fine for a while, had codes pulled by friend and code show security problem that's all i have, can u help thanks o ya all started when we had a new key made put in shop and the reprogrammed computer for the new keys so they say. back shop they won to much just to start checking it out, i thanks its old and the Cadillac shop don't wont it..o ya they will trade it. $500
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