How do I set the clock on my car stereo? (1999 to current model) Instructions for setting the clock on 1999 to current model car stereos. How to set the clock: 1. Press and hold the source button till the radio shuts off. 2. Press and hold the function button, until display pops up, then release. 3. Press the function button again until the clock shows on the display. 4. Press the up and down buttons to adjust the hours. 5. Press the left or right arrows to move to the minutes. 6. Press the up and down to adjust minutes. 7. When complete, press the source button to exit. If your stereo does not have a function button, use the audio button (lower right panel) instead. Attachments: There are no attachments for this solution.