Electronic Parking Brake Motor (Right) - 2011 528i

BMW F10 5-Series models utilize an integrated electronic parking brake actuator mounted directly to the rear caliper. The right side motor, BMW part number 34 21 6 870 269, commonly fails due to water ingress or internal gear stripping after high-mileage use. This actuator interchange spans 2011-2016 F10 sedans, F11 Touring wagons, and extends to the F01 7-Series (2009-2015) and F06/F12/F13 6-Series (2012-2018) platforms sharing the same rear brake architecture. Always verify the casting number TRW 2183101 on the motor housing for definitive cross-reference compatibility. Before removal, retract the piston using BMW ISTA software—manual forcing destroys the delicate internal gears. Junkyard inspection requires checking for corrosion on the three-pin connector and verifying the actuator housing isn't cracked from seized caliper mechanisms. Post-installation calibration is mandatory through diagnostic tools to initialize motor position limits.