Anti-theft system preventing car from starting

WAYNE GERALDS

MEMBER
1996 CADILLAC DEVILLE
4.6L
V8
2WD
AUTOMATIC
97,000 MILES

My thief system will not let my car start. Can the key be tested to know if the tumbler needs replacing or repaired?

Monday, September 14th, 2020 AT 4:47 PM

1 Reply

JACOBANDNICKOLAS

MECHANIC
108,371 POSTS

Hi,

Which type of key does the vehicle have? Is it a standard type with a chip, a key fob and so on.

Also, try this. Turn the key to the run position and allow it to stay there for approximately 10 minutes. See if the security light turns off and if the vehicle will start.

As far as testing the key, if it has failed, there should be a diagnostic trouble code related to an unreadable key.

Let me know what you find.

Joe