The replacement of the BMW X5 E53 generator must be carried out in the following order, read the information from the fault memory of the ECU-KSUD. Switch off the ignition and disconnect «-» terminal from AB. Remove the air filter housing, fan drive clutch and alternator drive belt. Remove the reservoir of the power steering pump together with the bracket and secure it to the body with a wire clamp, do not disconnect the pipelines. Remove the alternator cooling air hose, if provided. Disconnect the AL from the generator.
Remove the protective cap from the generator leads, unscrew the nut and remove «+» AB lead wire. Remove wires «B+» And «D+». Loosen alternator mounting bolts one by one (arrows, fig. 3.159), while holding the alternator and remove it.
When installing the generator, the tension roller latch must fit into the groove on its body. Install the belt so that the tension roller is located on top of the alternator drive belt. wire nut «D+» tighten torque 7.0 Nm (0.7 kgf·m),wire nut «B+» tighten torque 13.0 Nm (1.3 kgf·m), supply nut «positive» AB wires tighten to 13.0 Nm (1.3 kgf·m).