how to fix the radio not working in my Toyota RAV4 XA40 (2013-2018)

Solution

1. Preparation

• Gather tools: socket set, trim removal tool, multimeter, OBD-II scanner.
• Disconnect the negative battery terminal to ensure safety while working on electrical components.

2. Check and Replace Fuses

• Locate the fuse box, typically found under the dashboard or in the engine compartment.
• Remove the cover and identify the radio fuse using the diagram on the fuse box cover.
• Inspect the fuse; if blown, replace it with one of the same amperage rating.

3. Inspect Wiring and Connections

• Use a trim removal tool to carefully remove the dashboard trim surrounding the radio.
• Unscrew and pull out the radio unit to access the wiring harness at the back.
• Check for any loose connections, frayed wires, or burnt connectors. Reconnect or replace as necessary.

4. Test Radio Power and Ground

• With the radio still disconnected, set the multimeter to DC voltage.
• Connect the multimeter probes to the power and ground terminals on the radio harness.
• Turn the ignition to the "ON" position and check for approximately 12 volts. If not present, trace the power source back to the fuse box and battery.

5. Reinstall and Test Radio

• If all connections are secure and power is present, reconnect the radio unit and secure it with screws.
• Reinstall the dashboard trim piece.
• Reconnect the negative battery terminal and test the radio functionality.