Car Radio Only Works When Engine Is Off

Possible Causes

Faulty ignition switch: The ignition switch is responsible for providing power to the radio and other accessories. If the switch is faulty, it may not be able to provide power to the radio when the engine is running.
Loose or damaged wiring: The wiring that connects the radio to the ignition switch or battery may be loose or damaged. This can prevent the radio from receiving power when the engine is running.
Faulty radio: The radio itself may be faulty. This could be due to a number of issues, such as a blown fuse or a damaged circuit board.

Check the ignition switch: Turn the ignition switch to the “on” position and see if the radio turns on. If it does not, the ignition switch may be faulty and will need to be replaced.
Check the wiring: Inspect the wiring that connects the radio to the ignition switch or battery. Look for any loose or damaged wires. If you find any damaged wires, they will need to be repaired or replaced.
Check the radio: If the ignition switch and wiring are both in good condition, the radio itself may be faulty. You can try resetting the radio by disconnecting the battery for a few minutes and then reconnecting it. If this does not work, the radio will likely need to be replaced.

There are a few things you can do to prevent your car radio from only working when the engine is off:

Regularly maintain your vehicle: This includes having the ignition switch and wiring inspected and repaired as needed.
Avoid overloading the electrical system: Do not use too many accessories at the same time, as this can overload the electrical system and cause problems with the radio.
Park in the shade: Sunlight can damage the radio’s components, so park in the shade whenever possible.

By following these tips, you can help prevent your car radio from only working when the engine is off and keep your music playing for years to come.