See also:

Engine
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Air conditioning system
Air Conditioning Switch (If installed) The air conditioning is turned on or off by pushing the A/C button on the heating/air conditioning control panel. Air Conditioning Operation for Cooling ...

Checking the amount of air conditioner refrigerant and compressor lubricant
When the amount of refrigerant is low, the performance of the air conditioning is reduced. Overfilling also has a negative influence on the air conditioning system. Therefore, if abnormal operatio ...