Always start with the air conditioning service for 2001 and newer model year engines. First, remove the battery's negative terminal cable. Then take out the air duct and unscrew the cruise control module from its place. Take off the small wire connecting the pressure switch near the accumulator's top, then take off the pressure switch itself. Take off and put aside the part that holds your coolant while washing your windshield. Use a spring lock coupling tool to disconnect the section connecting the tester's air conditioning system tubing to the accumulator. Keep the seal between the accumulator and the
Evaporator clean by plugging the disconnected parts with a backup wrench. Take off the two screws: one securing the bracket where the accumulator meets the wall, the other attaching the tube between the accumulator and evaporator. Pull up and remove the accumulator unit. Prior to putting in the new accumulator, erase the Schrader valve, take the refrigerant oil from the old unit into a measuring box, and pour 2 ounces more of fresh oil into the fresh accumulator. Gently put the bracket in place over the new accumulator, fit it to the core by adding a new O-ring that has been coated in clean refrigerant oil, and make sure the bracket lines up with the gap between the flange on the case. Push the bracket tightly in place with a backup wrench. Then add the bracket screw and tighten correctly. Finally, fix the clip that holds the evaporator inlet tube to the bracket. On the accumulator, slide on an O-ring that's been treated with refrigerant oil, put the pressure switch back, and link the electrical connection. Connect the negative car battery cable again. Take your vehicle to the shop that recently released the air conditioning to have electric charges put back in and check for leaks.