Replacing the position switch (BMW X5 E53)

Automatic transmission type "A5S 440Z"

The replacement of the automatic transmission position switch type "A5S 440Z" must be carried out in the following order.

All work on replacing the position switch must be carried out on a cooled engine due to the possibility of burns on the exhaust system components. Unscrew the bolts (10, Fig. 9.36) and remove the protective cover (9) of the position switch (5). Loosen the bolts (6) and remove the position switch (5) from the control unit lever axis.



Unlock the SS (1, Fig. 9.37) automatic transmission control. Remove the control unit from the holder and release the cable harness from the brackets on the automatic transmission oil pan.



The position switch should be installed in the reverse order, and the bolts (M6) securing it must be tightened to a torque of 10 N·m (1.0 kgf·m).

Automatic transmission type "A5S 390R"

All work on replacing the position switch must be carried out on a cooled engine due to the possibility of burns from the exhaust system components.

Attention! Do not remove the transmission lock rod when the vehicle is parked, in "P" mode.

The transmission locking rod on the riser must not be moved more than 10 mm; if necessary, fix the rod with pliers.

The replacement of the automatic transmission position switch type "A5S 390R" must be carried out in the following order. Remove the automatic transmission oil pan and set the automatic transmission control selector to position "D". Remove the automatic transmission hydraulic control unit.

Holding the clamping sleeve (1, see Fig. 9.4) from turning and loosen the nut (2).



Loosen the nut (5) and remove the lever (3) of the control unit. Press out the spring pin (1, Fig. 9.38) switch (2) of the automatic transmission. Disconnect the selector disk from the transmission parking lock rod. Remove the switch (2) of the automatic transmission together with the selector disk.



Remove the switch (1, Fig. 9.39) Automatic transmission with selector disk.





The position switch should be installed in the reverse order, while the rod must be inserted (1, Fig. 9.40) parking lock from the rear into the selector disc (2). Insert the control unit lever shaft.



Holes for spring pins in the switch (1, see Fig. 9.39) Automatic transmission, in the selector disk (2) and in the axis of the control unit lever must overlap. Press in the spring pin.

Attention! During the entire installation operation, the leash (3) must be positioned strictly perpendicular to the axis of the control unit lever.

After installing the locking spring, it is necessary to make sure that the transmission locking system is operational when parked. To do this, push the leash (3) forward to the "P" position, turn the cardan shaft and check the pawl locking.



Tighten the control unit lever mounting nut to a torque of 15 N·m (1.5 kgf·m). Adjust the control unit lever. Tighten the clamping sleeve nut to a torque of 10 N·m (1.0 kgf·m).

Upon completion of the work, check the oil level in the automatic transmission and, if necessary, restore it.