Air Conditioning System: Precaution

NOTE: When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected.

SYSTEM REFERENCE

System	See procedure
Power window control system (with Jam protection function)	INITIALIZATION
Sliding roof system	INITIALIZATION

DO NOT HANDLE REFRIGERANT IN AN ENCLOSED AREA OR NEAR AN OPEN FLAME

Fig 1: Precautions For Handling Refrigerant In Enclosed Areas
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
ALWAYS WEAR PROTECTIVE GLASSES
AVOID SKIN OR EYE CONTACT WITH LIQUID REFRIGERANT
If liquid refrigerant comes in contact with your eyes or skin:
1. Rinse the area thoroughly with cold water.
  CAUTION: Do not rub your eyes or skin.
2. Apply clean petroleum jelly to the skin.
3. Go immediately to a hospital or see a physician for professional treatment.
  
  Fig 2: Precaution For Working With Liquid Refrigerant
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NEVER HEAT CONTAINER OR EXPOSE IT TO OPEN FLAME
DO NOT DROP OR STRIKE CONTAINER OF REFRIGERANT
DO NOT OPERATE COMPRESSOR WITHOUT ENOUGH REFRIGERANT IN REFRIGERANT SYSTEM
If there is not enough refrigerant in the refrigerant system, oil lubrication will be insufficient and the compressor may burn out. Care should be taken to avoid this.
DO NOT OPEN HIGH PRESSURE MANIFOLD VALVE WHILE COMPRESSOR IS OPERATING
Open and close only the low pressure valve. If the high pressure valve is opened, refrigerant flows in the reverse direction and causes the charging cylinder to rupture.

Fig 3: Identifying High And Low Pressure Manifold Valve
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
BE CAREFUL NOT TO OVERCHARGE SYSTEM WITH REFRIGERANT
Overcharged refrigerant will cause problems such as insufficient cooling, poor fuel economy, engine overheating, etc.
DO NOT OPERATE ENGINE AND COMPRESSOR WITHOUT REFRIGERANT IN REFRIGERANT SYSTEM
NOTE: This may damage the inside of the compressor because the compressor parts move regardless of whether the A/C system is turned on or off.