Cayenne S (9PA) V8-4.5L (2003)
Refrigerant Pressure Sensor / Switch: Service and Repair
Removing and Installing Pressure Switch
NOTE: The pressure switch is located in the radiator tank in the direction of travel under the cowl panel cover.
Removing Pressure Switch
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Remove wiper link.
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Remove cowl panel cover.
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Observe safety regulations. Refer to, Safety regulations for working on air-conditioned vehicles and dealing with refrigerant R134a.
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Drain refrigerant.
1. Press release on electrical plug -a- and disconnect from pressure switch.
2. Place one open-ended wrench on the hexagon of the pressure switch and a second open-ended wrench on the hexagon of the refrigerant line.
3. Unscrew pressure switch from refrigerant line in direction of arrow and remove.
Installing Pressure Switch
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Replace O-ring on pressure switch and wet with refrigerant oil.