Question about 2000 Buick Century

1 Answer

Buick century 2000 3.1 ..changed the key cylinder and the switch now the security light staying on causing to car to not crank what can the be?

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.


    An expert that got 20 achievements.


    An expert that got 10 achievements.

  • Buick Master
  • 48,419 Answers

You have changed the immobilizer program with the new switch
you need to have the key and switch reprogrammed to get the immobilizer to operate

Posted on Dec 17, 2016

Testimonial: "and how do i do that do i have to go to a mechanic"

  • Bill Boyd Dec 17, 2016

    a lot of locksmiths can program keys or go to a service center and have it done



1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

I changed my body control module on my 2000 buick century and it wont crank and the security light is staying on what can that be

If you bought a new one, it has to be programmed to the car. If you bought a used one, take it out. Go buy a new one and have it programmed to the car. BCM are one shot programming. They can't be reprogrammed.

Jul 10, 2016 | Buick Cars & Trucks

1 Answer

2000 buick lesabre wont start change ignition starter switch ignition lock cylinder and still wont start

When you say won't start do you mean it cranks n won't start or do you mean you turn the key all the way n won't crank I can help you but your question need to be more specifies good luck

Oct 03, 2015 | 2000 Buick LeSabre

1 Answer

On a Buick Century what does it mean when the security light comes on while driving 2000 century?

In most cases the light comes on when there is a problem with the chip in the key or the sensor in the key lock. If the warning light comes on or blinks when you are cranking the engine, the car will not start.

Jun 12, 2013 | Cars & Trucks

1 Answer

My security check light is on

It means the security (VATS) system does not "see" the chip in your key. You may be trying to steal the car with a phony key.
The problem could be the chip in the key, the sensor in the lock cylinder, or the VATS module.
It may become unable to crank.

Oct 12, 2012 | 2000 Buick Century

1 Answer

How to reset security on 2000 buick century

If the anti-theft module does not read the right chip in the key, the engine will not crank.
That would be a problem with the chip in the key, the sensor in the lock cylinder, or the module.
If it cranks but does not start, its probably not the security system.

Sep 22, 2012 | Buick Century Cars & Trucks

1 Answer

Security light came on and dont know what the security light is or what kind of problem it might be

The warning light is telling the driver the security module is not recognizing the chip in the key.
Usually the car will not crank when the light is on.
Common issues are the chip in the key and the sensor in the lock cylinder.

Sep 20, 2012 | 1997 Buick Century

1 Answer

I have a 2000 buick century and it gets power to everything but wont crank over

If you look at the key you should see a back plastic piece with a little metal strip in it try to clean it with alchol. it is a resistor that tells the car it has the right key


Dec 28, 2011 | 2000 Buick Century

2 Answers

Car wont start-security light on-passkey issue?

if the security light is on it could be the ign lock cylinder, it has two small wires attached to it and one may be broken and are the keys the ones that came with the vehicle

Nov 18, 2008 | 2000 Buick Century

Not finding what you are looking for?
2000 Buick Century Logo

Related Topics:

29 people viewed this question

Ask a Question

Usually answered in minutes!

Top Buick Experts


Level 3 Expert

78010 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22306 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a Buick Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides