Check the wiring/connection: Make sure the radio is properly connected. Disconnect and reconnect the connectors to see if it fixes the problem.
Try connecting a different device (such as a phone) to the auxiliary port to see if the sound comes through. This can help you determine if the issue is with the radio itself or the speakers/wiring.
Check the settings: Make sure your radio settings are correct. Check the balance, fader, and volume levels. Make sure the radio isn’t muted or set to a low volume.
Use the steering wheel controls to operate the radio. If they don't work, it could indicate an issue with the steering wheel controls or their wiring.
Check for any physical damage: Look for any visible damage to the radio, such as cracks or dents. If you find any damage, it may be necessary to replace the radio.
Reset the radio: Some car radios have a reset button. Consult your car's owner's manual to see if there is a reset button for the radio and how to use it.
Use the CD/tape function (if available): If your radio has a CD or tape player, try inserting a CD or tape to see if it works. If it does, the issue may be with the radio's tuner.
Update software (if available): Some car radios can be updated with new software. Check with the manufacturer or your car dealer to see if a newer version of the radio's software is available and how to update it.