How do you shut alarm from going off on a Chrysler 300 c?

To shut off the alarm on a Chrysler 300C, you typically need to unlock the driver's door with the key fob or the physical key. If the alarm is still going off, you can also try starting the engine with the key or pressing the panic button on the key fob to deactivate it. If the alarm continues to sound, check the owner's manual for specific instructions related to your model year. If problems persist, there may be an issue with the alarm system that needs professional attention.