12 61 280 Removing and installing/replacing oil pressure switch (M60, M62): Notes
Switch off ignition.
Unfasten oil filter cover to enable engine oil in filter to flow back into the oil pan.
M60:
Disconnect connector.
M62:
Unfasten plug connection (1). (Shown here with oil filter disconnected)
Unscrew and remove switch.
Tightening torque, see 12 61 1AZ in ENGINE ELECTRICAL SYSTEM - TIGHTENING TORQUE .