how to troubleshoot the radio not working in my BMW 3 Series F30/F31 (2012-2019)?

Solution

1. Preparation

• Tools Required: Socket set, multimeter, OBD-II scanner
• Disconnect the vehicle's battery to ensure safety while working on the electrical system.
• Gather necessary tools and components.

2. Inspect and Replace Fuses

• Locate the fuse box in the vehicle, typically found under the dashboard or in the trunk.
• Identify the fuse related to the radio/audio system using the fuse diagram.
• Use a fuse puller or pliers to remove the fuse and inspect it. If the filament is broken or the fuse is discolored, replace it with a new fuse of the same amperage.
• Reconnect the battery and test the radio.

3. Check Wiring and Connections

• Remove the radio unit from the dashboard by unscrewing the mounting brackets.
• Inspect the wiring harness connected to the radio for any signs of wear, corrosion, or disconnection.
• Secure any loose connections and replace damaged wires with appropriate gauge wiring.

4. Test the Radio Unit

• Reinstall the radio unit without securing it completely.
• Reconnect the battery and turn on the ignition to power the radio.
• Attempt to tune to different stations and check for audio output.
• If the radio still does not work, consider replacing the radio unit with a compatible aftermarket or OEM part.