Requires a dedicated laptop, an ENET cable or ICOM hardware interface, and has a steep learning curve.
This category is unique to the BMW community. These are "testers" that go beyond reading codes to actively rewriting the xDrive logic. xdrive tester
You should employ an xDrive tester if you experience any of the following common AWD symptoms: BMW Transfer Case Fluid Change DIY - X5, X6, X7 and MORE! Requires a dedicated laptop, an ENET cable or