21.ANTI-LOCK BRAKE SYSTEM (ABS) Downtown 125i ABS ABS ECU REMOVAL& INSTALLATION The coupler is used for automobile's waterproof. Please take car of operation. Please keep a good ventilating about ECU in order to prevent the ABS ECU from high temperature. ECU Ventilating Hole () Push upward () Take right out () Finished ABS ECU & ABS Hydraulic Unit ABS ECU & ABS Hydraulic unit (1) Remove the screws attaching to the Hydraulic Unit. To install the sensor is in the reverse order of removal. (1)Oil boltsX4 Torque: 35N.m(3.5kgf.m) (2)Nutx2:8N.m (0.8 kgf.m) When replacing a new Hydraulic Unit, don't need to drain the brake fluid. 21-6