Guides
Practical guidance on car radio codes. From finding your serial number to entering the code — step by step, per brand.
Entering your radio code
How you enter the radio code differs from brand to brand. This overview explains, for each brand, which buttons to use, how to confirm and what to do if the radio is locked.
Finding the serial number
Your car radio's serial number is on a sticker or can be retrieved digitally. Learn where to look by brand and prefix, and how to read the serial number correctly.
Radio code after a battery change
Not every radio asks for a code after a battery change. This article explains how the anti-theft protection works, which cars need a code and how to keep your code safe before you lose it.