Where is the Mercedes-Benz mirror heating located?
2 Answers
The mirror heating function in Mercedes-Benz vehicles is located on the car's central control screen, while some models have a dedicated button. The icon for the button-type mirror heating switch needs to be distinguished from the front windshield defogging button. A shape with three upward curved arrows inside a fan represents the front windshield defrost button, whereas a shape with three upward curved arrows inside a square frame indicates the mirror heating button. The working principle of mirror heating involves installing an electric heating element (heating film) inside the mirror lenses on both sides. During rainy or snowy weather, when the driver activates the mirror heating function, the heating element quickly warms up to a fixed temperature within a few minutes, effectively removing fog and frost. In addition to the heating element, some vehicles feature a knob-type mirror heating switch. On the driver's side door, there is a knob at the front left with several symbols: L, 0, R, and a heating symbol. The heating symbol, which is a square frame with three upward curved arrows, serves as the mirror heating switch. Turning the knob to this symbol activates the mirror heating function. Precautions for using the mirror heating function: After turning on the mirror heating function, the defogging or defrosting effect is not immediate. It takes some time for the frost or fog to gradually dissipate after preheating. Excessive use of this function, especially when each session lasts over 30 minutes, can affect the mirror's lifespan, clarity, and brightness. The mirror heating function typically only activates when the external temperature is below 20 degrees Celsius. If the outside temperature is high, the mirrors will not heat up even if the switch is turned on. The mirror heating function is designed to remove fog droplets and frost from the mirror surface but cannot eliminate raindrops in heavy rain. During heavy rainfall, the heat generated by the heating element is insufficient to evaporate continuous raindrops, which may still cause blurring and obstruct the driver's view. Vehicles equipped with mirror heating have specialized mirror lenses with heating function connectors, differing from standard lenses. When replacing the mirror lenses, it is crucial to ensure compatibility with the heating feature.
After driving for so many years, I can find the Mercedes-Benz rearview mirror heating button with my eyes closed. It's located on the center console near the air conditioning controls, featuring a square with three curved arrows, integrated with the rear windshield defogger button. Press it, and in about 20 seconds, the fog on the mirror will gradually clear. However, note that this feature is temperature-dependent; the heating element only activates when the outside temperature is below 15°C, so pressing it in summer won't have any effect. Also, in older models, the button might be on the driver's side door panel, marked with a heating symbol next to the mirror adjustment knob.
