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Security light

Tiny
WBAXTER56
  • MEMBER
  • 2003 CADILLAC CTS
  • 0.6L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 19,600 MILES
When I attempt to start my Cadillac the icon comes on the dashboard with a lock and a key symbol stays on for a few seconds and then it goes off but the car still will not start up, I purchased a new battery and new alternator a new relay switch and a new fuel pump. Please help
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Monday, December 3rd, 2018 AT 12:57 PM

2 Replies

Tiny
WILLIAM CRABTREE
  • MECHANIC
  • 95 POSTS
Hello,

Do you have another key for this car? If so, I would suggest trying it. The transponder key system is not recognizing the key, and that is why your security light comes on.

The transponder system will immobilize the engine in two ways. First, If the system does not detect the proper programmed key, it will stop the fuel pump and will also take out the spark. Once the proper key is used, the car should start okay. If you do not have another key, I would suggest calling a locksmith or the dealership.

Let me know if I can be of any more help!

William
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Tuesday, December 4th, 2018 AT 7:31 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Here is a guide that can help you reset the system:

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

Please run down this guide and report back.

Cheers, Ken

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Wednesday, December 5th, 2018 AT 12:56 PM

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