Aftermarket, Crystal Series Multimedia Controller Knob and matching Start/Stop Button from Car Analysis, Inc. Tried these on my X5 M50i for a few days and decided the look just wasn’t for me.
Controller knob kit includes Crystal Touchpad, Trim Ring, Installation Tool and detailed installation instruction. Start/Stop Button comes with sticky putty (for removal of factory button) and installation instruction.
DIY installation instructions found at
https://www.car-analysis.com/BMW-Cry...stallation.htm
$90. shipped in continental US