Hi everyone, if you have any experience with the antitheft system on a grand marquis, please help me out. I have a 2005 grand Marquis ultimate edition that I believe has gone into antitheft mode last night. I was getting into my car, and I pushed the gearshift in a manner that caused the car to not start up when I put the keys in. I tried several times to get the car to start, and to no avail. There is a red light on the dashboard that has a straight glow. Everything in the car is disabled, I cannot lock the car or pop the hood or anything. My dad and I have tried to get the car out of the antitheft lock system, but it has not worked. If anybody has any suggestions, or knows how to get the car out of the antitheft system, your help is greatly appreciated. Please feel free to DM me With any help/information you may have. Thank you :(