Transfer case Actuator motor (ATC400, ATC500, ATC700)

Common symptoms include the ‘triple crown’ of warning lights (ABS, 4×4, and Brake), a clicking or grinding noise from under the car when you turn off the engine, or jerky acceleration as the AWD system struggles to engage the clutch properly.

This motor is compatible with BMW vehicles equipped with ATC400, ATC500, and ATC700 transfer cases. This typically includes the BMW X3 (E83), X5 (E53, E70), and X6 (E71). Always verify your transfer case type before purchasing.

This is a genuine Bosch component. Bosch is the original equipment manufacturer (OEM) for these BMW transfer case motors, ensuring the same quality, fitment, and longevity as the part originally installed in your vehicle.

While repair kits for the internal plastic gear exist, they are often a temporary fix. If the motor’s internal electronics or magnetic coil are failing, replacing the entire unit with this Bosch motor is the only way to ensure long-term reliability and proper AWD function.

Yes, after installing a new actuator motor, you must perform a calibration procedure using a diagnostic tool (like ISTA or a high-end scanner). This allows the Transfer Case Control Module to learn the new motor’s classification and end-stop positions.