散熱風扇不轉的危害性，奔馳汽車風扇是發動機散熱系統重要的機件，如果風扇出現不轉的情況，那么散熱系統的熱量就得不到散發，發動機的熱量就會持續升高，短時間內散熱系統的循環液就會出現開鍋的現象，一旦發動機過熱嚴重，就會熔化活塞導致拉缸等故障，任其發展，更終會導致發動機化瓦，抱軸，搗缸，直至發動機報廢，所以碰到這種情況馬虎不得。
The dangers of cooling fan does not turn, mercedes-benz fan is important part of engine cooling system, if the fan does not turn, so the cooling system will not get heat, heat of the engine will continue to rise, a short time, the cooling system of the circulating fluid will appear the phenomenon of water boiled, once the engine overheating, will melt cause failures, such as cylinder piston Let its development, will eventually lead to the engine tile, hold the shaft, ramming cylinder, until the engine scrapped, so encounter this situation shall not be careless.
奔馳汽車發動機水溫高如果保險絲沒燒的話，就是風扇插頭處搭鐵不好，或已燒蝕導致的；將電子扇故障排除后水溫就會正常了。
Benz engine water temperature is high if the fuse is not burned, it is the fan plug is not good, or has been ablated; Once the fan is malfunctioned, the water temperature will be normal.
如果電動冷卻風扇在發動機冷卻液溫度升高到規定溫度后沒有及時運轉，會導致發動機冷卻液溫度過高，甚至出現水箱開鍋的現象；
If the electric cooling fan does not run in time after the engine coolant temperature rises to the specified temperature, the engine coolant temperature will be too high, and even the water tank will boil.
對于不同牌號的汽車或同一牌號不同年份生產的汽車，其電動冷卻風扇的控制電路都不完全相同，因此在檢修電動冷卻風扇不轉的故障時，應參照該車型維修手冊中的內容和診斷程序；
For cars of different brands or cars produced in different years of the same brand, the control circuit of the electric cooling fan is not exactly the same, so when repairing the failure of the electric cooling fan, the contents and diagnostic procedures in the maintenance manual of this model should be referred to;
一般車型的電動冷卻風扇控制電路的原理。安裝在發動機水道或散熱器上的冷卻液溫度開關和汽車空調開關，通過繼電器共同控制冷卻風扇電機，在發動機冷卻液溫度達到規定數值時或開啟汽車冷氣空調時，電動冷卻風扇電機都會運轉。
General model electric cooling fan control circuit principle. The coolant temperature switch installed on the engine channel or radiator and the automobile air conditioner switch jointly control the cooling fan motor through the relay. When the engine coolant temperature reaches the specified value or when the automobile air conditioner is turned on, the electric cooling fan motor will operate.
In addition, Benz vehicle fan operation, a slight jitter is normal. In actual use, there may be some sundries (catkins, soil, etc.) attached to the radiator fan, resulting in the shaking of the fan during operation. If the jitter is serious, please go to the repair place in time to repair, jinan Benz car repair which good? More questions, please http://www.cnjqf.com consultation!
