China Naming Network - Eight-character Q&A - Where is the Mercedes r350 warm water valve?

Where is the Mercedes r350 warm water valve?

? The warm water valve is located between the main water tank and the engine warm water tank. The warm air water valve is the warm air switch of the automobile heater. The working principle of the automobile heater is that the radiator in the heater is connected with the circulating water of the engine through the inlet and outlet water pipes.