The replacement of the BMW X5 E53 starter must be carried out from below, in the following order. Switch off the ignition and disconnect «-» terminal from AB. Remove the rear engine accessory guard plate and stiffening plate.
If there is a system «ARS», unscrew the nut (1, fig. 3.160) and remove pressure pipes (2). Remove bolts (3) and remove the holder (4).
Loosen the nut and remove «+» battery connection wire to starter. Loosen the bolts securing the starter to the engine, pull the starter out of the gearbox support and rotate it so that it is easier to access the control wires on the starter.
Remove the nuts and disconnect the traction relay control circuit wires from the starter. Remove starter. Check drive gear and starter ring gear for damage, replace starter if necessary.
When installing, tighten the wire fastening nuts with a torque: M5 - 5.0 N·m (0.5 kgf·m); M6 - 7.0 Nm (0.7 kgf·m); M8 - 13.0 Nm (1.3 kgf·m). Tighten the starter mounting bolts to a torque of 47 Nm (4.7 kgf·m).