Here's a breakdown:
* Immobilizer: This is a common system that prevents the engine from starting if the correct key (or transponder chip in the key) isn't present. It *prevents* the car from being started, not shuts it down while running.
* Alarm System: This will typically sound a loud alarm to deter thieves and may also activate other features like flashing lights. It won't shut the engine down while running.
* Tracking Systems: These systems don't shut the car down but allow authorities or the owner to locate the stolen vehicle. Some advanced systems might allow for remote disabling, but this is usually done by law enforcement, not automatically.
* Modern Security Systems: Some newer vehicles have more sophisticated systems that might incorporate elements of all the above, potentially including remote disabling capabilities accessible via a connected app or law enforcement. However, this isn't a standard feature across all cars.
In short, while a car's security system won't automatically shut down a running engine upon theft, it will usually prevent the car from being started or trigger an alarm to alert the owner and deter theft.
