If the A/C Compressor is being replaced due to failure, the rest of the system should be flushed by a technician to remove particles or contaminants. Begin by having the air conditioning system discharged by an automotive air conditioning technician. Disconnect the cable from the negative terminal of the battery. Loosen the right front wheel lug nuts, raise the vehicle, and support it securely on jackstands before removing the wheel and splash shields. For 2.0L and 2.3L engines, remove the compressor cover mounting nuts and cover. Remove the drivebelt. Disconnect the electrical connector from the compressor clutch field coil, and for 2010 and later models, disconnect the harness clips attached to the outlet line of the compressor. Disconnect the compressor inlet and outlet lines, removing and discarding the old O-rings, then remove the compressor mounting bolts and take out the compressor. If a new compressor is being installed, follow the directions that came with it regarding the draining of excess oil prior to installation, and transfer the clutch from the original to the new compressor if necessary. Before reconnecting the inlet and outlet lines, replace all manifold O-rings and lubricate them with refrigerant oil. Installation is otherwise the reverse of removal, and have the system evacuated, recharged, and leak-tested by the shop that discharged it.