Section 435 (Heater & Air Conditioner): Refrigerant: Replacement

WARNING: This page is about a different car, the 2004 Lexus ES 330, 2003 Lexus ES 300, and 2002 Lexus ES 300. However, it is still accessible from the selected car via links, so may be relevant.

DISCHARGE REFRIGERANT FROM REFRIGERATION SYSTEM
1. Turn the A/C switch ON.
2. Operating the cooler compressor at the engine rpm of approx. 1,000 for 5 to 6 min., circulate the refrigerant and collect compressor oil remaining in each component into the cooler compressor as much as possible.
3. Stop the engine.
4. Let the refrigerant gas out.
  SST 07110-58060 (07117-58080, 07117-58090, 07117-78050, 07117-88060, 07117-88070, 07117-88080)
CHARGE REFRIGERANT
1. Using a vacuum pump, perform a vacuum pumping.
2. Charge refrigerant, HFC-134a (R134a).
  Standard: 550 +/- 50 g (19.37 +/- 1. 76 oz.)
  
  SST 07110-58060 (07117-58060, 07117-58070, 07117-58080, 07117-58090, 07117-78050, 07117-88060, 07117-88070, 07117-88080)
  
  Fig 1: Refrigerant Charging Graph
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
WARM UP ENGINE
INSPECT LEAKAGE OF REFRIGERANT