Why won't it start?

When the anti-theft system in your car is activated, it is designed to prevent unauthorized access to the vehicle and protect it from theft. The specific features and functions affected by the activation of the anti-theft system can vary depending on the make and model of your car. However, here are some common ways in which the anti-theft system can impact your vehicle:

1. Ignition Interlock: In many vehicles, the anti-theft system can prevent the engine from starting or cut off power to the ignition system. This is often the primary function of the anti-theft system to deter thieves from driving the vehicle.
2. Key Removal: Some anti-theft systems can also lock the key in the ignition switch, making it difficult or impossible to remove the key when the system is activated.
3. Door Locks: The anti-theft system may lock or unlock the doors automatically when it is activated. This can be intended to prevent unauthorized entry.
4. Windows and Sunroof: In some cases, the anti-theft system can disable the power windows and sunroof to prevent someone from gaining access to the interior through these openings.
5. Alarm Activation: If your vehicle is equipped with a security alarm system as part of the anti-theft system, it may activate the alarm if unauthorized entry is detected or if someone tries to tamper with the vehicle.
6. Vehicle Immobilization: Some advanced anti-theft systems can immobilize the vehicle by cutting off fuel or electrical power to the engine.

If you're experiencing issues with your key not coming out, windows not rolling down, and the sunroof not opening, it's possible that these problems are related to the activation or malfunction of the anti-theft system. However, it's essential to consult your vehicle's owner's manual or contact the manufacturer or a qualified automotive technician for specific information about how your vehicle's anti-theft system operates and to diagnose and resolve the issues you're facing.

In many cases, anti-theft system problems may require specialized equipment and knowledge to diagnose and repair, so seeking professional assistance is often the best course of action.

Try this

To fix the Dodge Nitro anti-theft mechanism, you will insert the ignition key and turn it to the on spot, and then attempt to start the engine (crank over), the engine does not run. With the key still in the run spot, wait 10 minutes, and the safety light will flash and then go out.

How do i reset the Dodge Nitro anti theft? - Vehicle History

Or this

How do I reset my Dodge anti-theft system?
To deactivate the anti-theft system so that you can drive your vehicle normally once again, the steps are simple:

1. Place your key in the ignition of the vehicle.
2. Do not attempt to crank up your truck.
3. Allow your key to sit in the ignition for 60 seconds. ...
4. After 60 seconds have passed, start your vehicle as normal.

Jun 28, 2021

Dodge Ram 1500: Resetting the Anti Theft - VehicleHistory

security lockout

you have to take it to dealer to get it reset Chey trucks are the same way

If you are dealing with the anti theft the anti theft will flash as you are trying to start the vehicle if this is the case then it is the anti theft if not then you are not dealing with a ant theft issue. You can do a 30 minute relearn procedure without a scan tool. here is how Turn ignition on without the engine reunning.attempt to start the vehicle then release the key to ON.(vehicle doest start) Observe the security light.afeter 10 minutes the security light will turn off.Turn off the ignition and wait 5 seconds.do this 3 times for 30 minutes. start the engine with the engine started the vehicle will learn the passlock key.

You have to do a relearn procedure on the anti-theft system:

Attempt to start the vehicle. Leave the ignition on until the THEFT SYSTEM indicator turns off (about 10 minutes). Turn the ignition switch off. Leave the ignition switch off with key in for about 10 minutes. Attempt to start vehicle.

ANTI-THEFT SYSTEM Passive anti-theft system
Your ignition key has a unique imbedded transponder which engages engine electronics and allows the vehicle to be started. Without the use of your special ignition key, the vehicle will not start.

During each vehicle start, the coded key is read by the anti-theft system. If the key’s ID code matches the code in the anti-theft system, the vehicle is enabled to start.

Anti-theft system
Briefly illuminates when the ignition is turned to the ON position to verify that the passive anti-theft system is operating properly.

Also, its possisble that tou have actovated the fuel pump switch.

CHeck it.

Your vehicle has a VATS Anti-Theft system which will shut down the starter and if the vehicle doesn't read the key! VATS anti-theft systems are bad to get faulty connections between the key and ignition lock cylinder!
1. Take a pencil eraser and clean the ends of the key pellet.(Small black square with brass connections)
2.Look inside of Ignition tumbler and you should see 2 brass contact brushes just inside the opening
Clean them with some plastic safe contact cleaner.
Let's see if that fixes the problem.
Also if you have a spar key,Try it!
Have a Nice Day!

First thing,Your vehicle has a VATS Anti-Theft system which will shut down the starter if the vehicle doesn't read the key! VATS anti-theft systems are bad to get faulty connections between the key and ignition lock cylinder!
1. Take a pencil eraser and clean the ends of the key pellet.(Small black square with brass connections)
2.Look inside of Ignition rumbler and you should see 2 brass connection brushes just inside the opening
Clean them with some plastic safe contact cleaner.
Let's see if that fixes the problem!
Also if you have a spar key,Try it!

If the above doesn't work then I'd move on to the starter interrupt solenoid under the hood somewhere around the power distribution center and battery and go from there!

Hope this helps and have a Great Day! GMJ