Lexus RX400h, Hybrid 3 2006

Charging the System


Refer to the applicable precautions for this system before performing the following operation. Failure to follow the warnings and cautions could result in possible personal injury or death.

Air conditioning refrigerant or lubricant vapor can irritate your eyes, nose, or throat. Be careful when connecting service equipment. Do not breathe refrigerant or vapor.

Use only service equipment that is U.L.-listed and is certified to meet the requirements of SAE J2210 to remove HFC-134a (R-134a) from the air conditioning system.

  1. Perform vacuum purging using a vacuum pump.
  3. Charge refrigerant HFC-134a (r134a) using Special Tools 07110-58060 (07117-58060, 07117-58070, 07117-58080, 07117-58090, 07117-78050, 07117-88060, 07117-88070, 07117-88080). Standard capacity is 550 to 650 g (19.4 to 22.9 oz.).
    Do not turn the A/C on before charging with refrigerant as the cooler compressor doesn't work properly without any refrigerant, which causes the compressor to overheat.

  5. Approximately 100 g (3.53 oz.) of refrigerant may need to be charged after bubbles disappear. The refrigerant amount should be checked by quantity, and not with the sight glass.
    Prepare a service can to recharge the refrigerant if using the refrigerant gas collected with the Freon collection/recycling device because the collective rate of the device is approximately 90 %.

    Click image to see an enlarged view

    Fig. A/C system charging graph

  7. Warm up compressor:
    1. Turn the a/c switch on continuously for at least 2 minutes to warm up the compressor.
      Be sure to warm up compressor when turning the A/C on after removing and installing the cooler refrigerant lines (including the compressor), to prevent damage to the compressor.