Transfer Case Shift Motor 27607643762, BMW X5 xDrive

This is the electric shift actuator motor that bolts to the rear of the BMW xDrive transfer case and drives the shift shaft that loads the multi-plate clutch. It replaces BMW part number 27607643762 and ships as a complete assembly with the motor, the gear reduction train and the position sensor in one sealed housing, so it mounts with the factory bolts and plugs into the original connector.

Inside the unit a small DC motor turns a worm and gear set against the shift cam, and a position sensor reports where that cam is sitting. The transfer case control module uses that signal to hold a torque split front to rear. When the gear train wears or the sensor loses its reference, the module can no longer trust the position feedback and drops the case into a default state. What the driver sees is an xDrive or drivetrain malfunction message, a case that binds in slow tight turns, a whirring or grinding from the center of the floor, or all-wheel drive that simply stops working while the fault stays stored in the transfer case module.

Fitment is BMW X5 3.0L 2011-2013, X1 2.0L 2012-2015 and X6 4.4L 2008-2014. This is not the same actuator as the earlier 27107566296 servo used on the previous-generation cases, so match the number stamped on the motor you are pulling off before you order.

Replacement is done from underneath. Drop the heat shield for clearance, unplug the connector, pull the mounting bolts and the old motor comes off the case. Line the new motor's output up with the flat on the shift shaft before you seat it so you are not forcing the gear, then torque the bolts evenly. After it is on, the transfer case module needs its calibration routine run with a scan tool that supports BMW xDrive adaptation. Skipping that step leaves the module referencing the old actuator's end stops and the fault comes right back.