X5 Transfer Case Actuator Motor Gear Replacement

[iansanderson]

I'm thinking the gear turns mainly when DXC detects a slipping moment during acceleration, thus turning the gear which transfers additional power needed to the front or rear differential.

The other scenario is when the vehicle is going faster than 112 MPH, and the transfer case changes to rear drive only, and needs to turn the gear.

I have to assume if you rarely experience any of the above situations, the gear remains stationary, thus not prone to failure.