If the security system was self installed, modded, or not originally made with the vehicle... then there's probably an error from the installation. It happened with my truck (still is) when I had one put in. If it's factory security then try looking up recalls for your model.
A bad starter can cause a Mercury Grand Marquis to not start. A bad alternator or a problem with the security system can be the cause for the car not starting.
I had the same problem with my 98 Tahoe. It ended up being the security sensor. The system was recording a security breach and would not start the vehicle. The dealer told me it was reading the chip in the key wrong. You can try and see if this is also your problem. Barrie form Van. B.C.
Majority of the time the problem is in the ignition key chip or ignition lock cylinder
put key in driver door turn it right then left
The car won't start because of the security system. The security system will either have to be bypassed (there are kits available on Ebay sometimes and there are some websites that have them too) or replaced. The ignition key has a built in resistor that the security system checks when you try to start the car. If the security system doesn't recognize the resistance of the key it won't start the car. Then you have to wait 2 to 10 minutes before it will start ( sometimes it's a lot longer than 10 minutes). You could try getting a replacement key and see if the security system recognizes it better. GM installed security systems in their vehicles that are called Passkey I, II and III. So if you get a kit you have to know which system is in your vehicle.
The security system prevents unauthorized operation of the car, your system has been tripped, and the car disabled. You will need to reset the security system to start it. If you have the original key you should be able to do it.
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Check to see if the security light is on, on the dash. Could be a passlock system problem and if it is the GM dealer is the only one to fix it & reprogram the system
You are having a problem with your passlock II security system. You have to buy a new ignition mechanism
probably your security system . Search google for "Bypass GM Vats Security"
Be sure to check your security system if you have one. Many of the security systems will "kill" the start circuit when triggered.
yes