1, air conditioning system failure: Mercedes-Benz's air conditioning system consists of multiple components, such as compressor, condenser, evaporator, etc. Any component failure will cause the air conditioning system to fail to work normally, thus affecting the water temperature of the engine.
2. Failure of cooling system: The cooling system of the engine includes water tank, radiator, water pump and other components. If any component fails, the water temperature will be too high. At this time, air conditioning will increase the load of the engine and accelerate the overheating of the engine.