A very common issue on the BMW E46 is that the volume knob on the factory radio ends up breaking, so that you can no longer press the button to turn it on or off. It doesn’t matter which model E46 you have: 323i, 325i, 328i, or 330i (convertible/sedan/coupe), all of these vehicles use a similar BMW Business CD radio unit.

I’ve replaced the head unit/radio in my 2003 Toyota 4Runner countless times for various stereo upgrades, so I’ve gotten familiar with taking the trim apart to get access to the head unit. After doing it so many times, I’ve been able to get my time down to less than five minutes. I figure this tutorial would be helpful for anyone trying to remove their radio and want to get to the head unit quickly.