For most models, you will need radio release keys (available at retailers like Halfords ) to slide the unit out of the dashboard.

Look for a sticker or an engraving on the top or side of the metal casing.

On some BMW or older units, you can sometimes display the serial on the screen by holding the "M" button or scrolling through the "AREA" settings without removing the radio. 2. Using the Blaupunkt Radio Code Calculator Online

How to find your car radio code and unlock your stereo - RAC

By using a , you can retrieve your unlock code in minutes using just your device’s serial number. 1. How to Find Your Blaupunkt Serial Number