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Where is the rearview mirror heating switch on a Mercedes-Benz?

1 Answers

JamesonAnn

07/25/25 1:51am

The rearview mirror heating and rear window heating on a Mercedes-Benz share the same REAR button, which simultaneously heats the rearview mirrors. The icon features three curved upward arrows paired with a rectangle. Rearview mirror heating is particularly useful during rainy or snowy weather. When activated, the heater behind the mirror quickly warms the surface, gradually removing rain or fog, eliminating the need for frequent manual wiping by the driver and thereby reducing driving hazards. How to use the rearview mirror heating function: There are generally two ways to activate the rearview mirror heating function. One is combined with the electric rearview mirror adjustment button—simply rotate the knob to turn it on. The other is located on the air conditioning control panel—press the heating button to activate it. No manual angle adjustment is needed, as the driver's side has an adjustment button. Principle of the rearview mirror heating function: After rotating the button, the electric heater behind the rearview mirror glass rapidly heats up to a fixed temperature within minutes, typically between 35-60 degrees. The heat is then distributed across the left and right rearview mirrors. Simultaneously, as the temperature rises and evaporation occurs, water droplets on the mirror surface shrink, and fog gradually dissipates, effectively defrosting and de-fogging the mirror. However, if the rain is particularly heavy, the effect may diminish and become less noticeable. Precautions for using the rearview mirror heating function: The principle of rearview mirror heating involves electric heating wires embedded in the mirror, which consume a significant amount of power. When using this function, ensure the car is in an ignited state. Avoid activating rearview mirror heating while the car is stationary to prevent draining the battery, which could leave insufficient power to start the car. Other methods for defogging rearview mirrors include: Opening windows for convection: Crack open the side windows slightly to allow air convection between the inside and outside of the car, reducing the temperature difference and gradually eliminating fog. Adjusting the car's air conditioning to the appropriate setting to blow hot air for defogging.

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