1. Switch the ignition ON.
2. Switch the radio ON if turned OFF.
3. The display shows 'CODE 1_ _ _ _ '.
4. Use the preset buttons to enter the PIN code.

Example: If the PIN code belonging to the radio is 3651.

If a wrong PIN code has been entered the display will show CODE ERROR WAIT. After the waiting time 'CODE 2 _ _ _ _' will be shown on the display indicating that this is the second attempt. The correct code should now be entered. After three attempts the delay time will be 1 hour. The display will show LOCK OUT 1 HOUR. After the delay time another three attempts at entering the code will be possible.

The following procedure resets the audio system parameters to the factory default settings.

1. Switch the ignition ON.
2. Switch the radio OFF.
3. Press and hold the ON button and the Memory Preset Station 4 button for at least 2 seconds.