See also:

When “CHECK DISC” is displayed
Press the eject button to unload the discs. Check that the disc is not damaged or scratched, and also check that the disc is inserted correctly. This message may appear when using some CD-RW discs ...

Volume control buttons
Models without Hands-free system Models with Hands-free system Press the “+” button to increase the volume. Press the “−” button to reduce the volume. A number indicating the volume will be s ...

Brake pad and lining
While maintaining a speed of 30 to 40 mph (50 to 65 km/h), step on the brake pedal lightly. Repeat this five or more times. ...