The screen should go blank and then reboot. Release the button once you see the display turn back on. Unlocking from "SAFE" Mode
The "SAFE" message remained, which meant the radio was locked for security. Jack found his unique on the "Radio Card" in his owner’s manual. He followed the standard input procedure: He waited until "SAFE" turned into "1000" on the display. He used the preset buttons (1-4) to enter the digits. Pressing button 1 multiple times changed the first digit. Button 2 changed the second, and so on. how to reset vw volkswagen rcd 300 radio top
This is the safest method and does require a radio code. Use it if the screen is stuck, buttons don’t work, or the sound is distorted. The screen should go blank and then reboot