Step 1: Remove the cover panel below the steering wheel.
Step 2: Locate the fuse box labeled "RADIO" on the lower left side of the fuse panel.
Step 3: Gently pull out the fuse labeled "RADIO" using a small pair of needle-nose pliers.
Step 4: Inspect the fuse for any signs of damage, such as a blown fuse link. If the fuse is blown, replace it with a new fuse of the same rating.
Step 5: Reinsert the fuse into the correct slot and ensure it is securely seated.
Step 6: Replace the fuse box cover and then the cover panel below the steering wheel.
Note: The radio fuse in the 2015 Toyota Yaris is rated at 15 amps and is responsible for supplying power to the radio and related components. If the fuse is blown, it is recommended to consult the vehicle owner's manual or seek assistance from a qualified technician to determine the cause of the problem and ensure the radio and electrical system are functioning correctly.