Toyota chr air conditioner is on, indicating that it needs maintenance.

It is necessary to maintain the engine regularly after working for a period of time. According to car home's information query, general mechanical equipment has maintenance problems, not to mention the engine, which is a high-speed machine and the friction between parts is very intense. The filter elements of air filter and firewood filter should be cleaned frequently. Lubricating oil should be changed regularly. Water leakage, oil leakage and air leakage should be eliminated. Check whether some important connecting screws are loose.