Cool Vehicle Won't Start But Radio Works Ideas. If you observe that your car won’t start but the radio and light work, their several concerns maythe accused. This starter motor is the one causing your car to start.

You should also see if there are any lights on the dashboard that might indicate why your car won’t start. If all of this fails, try turning off the ignition and turning it back on again. In this case, replace the battery and check the alternator.