BMW 64539323658 Pressure Sensor

Following manufacturer's instructions, connect an approved refrigerant recovery, recycling, or recharging unit to the A/C system and discharge the system. Remove the windshield washer reservoir, noting that the pressure switch is located at the receiver dryer. Disconnect the electrical connection and unscrew the switch from the receiver dryer. Always replace O-rings when reconnecting refrigerant lines.

To replace the A/C Evaporator Core in a 3 series, discharge the AC refrigerant by a BMW expert. In the engine compartment, detach the air filter, heater core, and instrument panel. Then, undo the AC lines, temperature sensor, and wiring connectors. For Z4 models, remove the heater assembly, evaporator cover, and expansion valve. Then, replace the expansion valve and A/C Accumulator. For the compressor, remove the engine splash shield, drive belt, and compressor. For installation, mount a new compressor with the proper oil and seals.