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1998 Cadillac DeVille Support Question

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Question posted by ut03276 on December 30th, 2021

Push Switch/key Unlock Warning Switch Malfunction

Is this a common problem i have a 98 deville and it's giving me the b2780 code.and I need help how to fix the problem or troubleshooting it.

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Answer #1: Posted by SonuKumar on December 31st, 2021 7:03 AM

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What are the symptoms of a bad key switch?

Signs Of A Faulty Ignition Switch

Car Won't Start. If you turn your key and the car attempts to start, but fails, then you might have a broken ignition switch. ...

Key Won't Turn. ...

Car Stalls. ...

No Noise From The Starter. ...

Dashboard Lights Flicker.

https://www.youtube.com/watch?v=5T8e3MBFqbE

https://www.youtube.com/watch?v=UaVKYXELM_k

https://wrench.com/blog/signs-you-have-a-bad-ignition-switch/

How do you reset the security system on a 1998 Cadillac Deville?

To reset the system You will need to lock all of the doors using the key fob and arm the system. Next You will need to use the physical key in the driver's door using the key cylinder. After that put the key into the ignition and move it to the on and off position twice without starting the car.

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