How do you make a car tracker not work but keep it plugged in?

To disable a car tracker while keeping it plugged in, you can try using a signal jammer to disrupt the GPS signals it relies on. Alternatively, you could cover the tracker with a material that blocks signals, such as aluminum foil, which would prevent it from transmitting data. However, keep in mind that tampering with tracking devices may have legal implications, depending on your jurisdiction. Always check local laws before attempting to disable any tracking device.