used the wrong key without a chip now seurity system doesnt let the right key with the chip to start the do i start the car

Asked by Apr 25, 2018 at 06:39 PM about the 1993 Buick LeSabre

Question type: Maintenance & Repair

used the wrong key without a chip to start the car, now the security light is on and wont let the key with the chip start the car. How do I get the car started.

3 Answers

Try disconnecting the battery for about an hour and see if that works. This should reset all of the components in the car.

I'm not familiar with that specific car but with some other cars you can lock and unlock the car with the key-fob and that tells the security system to reset. Evidently when the system knows the owner (the one with the key-fob) is present it assumes all is well. You can also try locking and unlocking the drivers door with the outside key and that will often reset it as well,.


You may have damaged the part of the ignition that reads that chip. First try this relearn procedure. If that does not work, check out this link for DIY options. Relearn the system. Turn ON the ignition, with the engine OFF. Attempt to start the engine, then release the key to ON, vehicle will not start. Observe the SECURITY telltale, after approximately 10 minutes the telltale will turn OFF. Turn OFF the ignition, and wait 5 seconds. Start vehicle.

1 people found this helpful.

Your Answer:


Looking for a Used LeSabre in your area?

CarGurus has 6 nationwide LeSabre listings and the tools to find you a great deal.

Postal Code:

Buick LeSabre Experts

  • #1
    Tom Demyan
  • #2
    John Saffrahn
  • #3
    Austin Gaboda
View All

Related Models For Sale

Used Buick Regal
154 listings starting at $6,200
Used Chevrolet Impala
18 Great Deals out of 1,010 listings starting at $2,994
Used Buick Century
8 listings
Used Honda Accord
33 Great Deals out of 1,673 listings starting at $1,800
Used Toyota Camry
26 Great Deals out of 2,104 listings starting at $2,995
Used Cadillac DeVille
15 listings

Used Cars For Sale

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.