一辆奔驰（ＢＥＮＺ）牌载货汽车的雾灯不能点亮。检查雾灯开关、雾灯继电器以及雾灯，均正常。查看该车电气原理图，发现该车雾灯不仅要受到车灯组合开关、雾灯开关及雾灯继电器的控制，还受到前照灯远光的控制。当前照灯远光点亮时，雾灯不能点亮。奔驰牌载货汽车雾灯控制电? Fog lights on a BENZ truck can not be lit. Check the fog light switch, fog light relay and fog lights, are normal. Check the car electrical schematic and found that the car fog lights not only by the lights combination switch, fog light switch and fog lamp relay control, but also by the headlight high beam control. When the current light when the light is lit, the fog lights can not be lit. Mercedes-Benz truck fog lights control electricity?