Toyota 88645-04060 Switch, Pressure

To begin the removal process, it is necessary to have the vehicle's air conditioning system discharged and the refrigerant properly recovered. Proceed by unplugging the electrical connector from the HVAC pressure switch. Next, unscrew the HVAC pressure switch, ensuring that another wrench is used to hold the fitting and prevent any deformation of the refrigerant line. It is advisable to lubricate the switch's O-ring with clean refrigerant oil of the appropriate type before proceeding with the installation. For the installation, screw the new switch onto the threads and tighten it securely. Reconnect the electrical connector to ensure proper functioning. Finally, it is recommended to have the system evacuated, charged, and leak tested by a professional.