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How to Turn On the XTS Rearview Mirror Heating?

4 Answers
OSilas
07/29/25 5:50pm
The method to turn on the XTS rearview mirror heating is as follows: 1. Press the rear window defroster switch button below the center control screen, and the rearview mirror heating function will be activated simultaneously, which will eliminate fog or frost on the rearview mirror surface. 2. Of course, the rearview mirror heating requires some time to take effect, and it does not immediately reach the temperature for defogging after being turned on. Drivers should not take it lightly. The rear window defroster function will automatically turn off after a certain period of use. If the owner needs continuous use, it can be turned on again. Additional Information: 1. There are two designs for the rearview mirror heating control switch: one is integrated with the electric rearview mirror adjustment combination switch, and the other is located on the air conditioning control panel. Regardless of the design, the function is the same. After pressing the button, the heating elements behind the rearview mirror glass will quickly heat up to a fixed temperature within a few minutes, typically between 35-60 degrees Celsius. Warm air will emerge from both left and right rearview mirrors, and the water droplets on the mirror surface will gradually evaporate due to the rising temperature, while the fog will slowly disappear, thereby achieving the effect of heating the mirror, defogging, and defrosting. If the rainfall is particularly heavy, the effect may be reduced and not very noticeable. 2. Note that the rearview mirror heating consumes a significant amount of power, so when using the rearview mirror heating function, ensure the vehicle is in the running state. Avoid using this function when the car is cold. If the battery is low on charge or malfunctions, the rearview mirror heating may not activate.
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McDallas
08/14/25 9:35am
I often use the rearview mirror heating function of my XTS while driving, which is particularly useful in rainy or snowy weather. The activation method is very simple: first start the engine, then press the button with a snowflake icon or labeled REAR on the center console panel in front of the driver's seat. The indicator light will turn on to show it's activated. This function automatically heats the rearview mirrors to clear fog or frost, keeping them clear and greatly improving visibility during rainy or foggy conditions. It automatically operates when the temperature drops below 5 degrees Celsius, which is super convenient. I usually turn it on right after starting the cold engine in the morning, letting the system preheat for a few minutes so I don’t have to worry about it while driving. Remember not to use this function during hot summer days to avoid wasting energy. Combining it with automatic air conditioning settings enhances the effect, making the entire driving experience safer and more comfortable. If the mirror heats slowly, you may need to check the fuse or wiring, but generally, issues are rare, so feel free to use it with confidence.
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VonLilliana
10/14/25 2:40am
On the XTS, the rearview mirror heating system is operated very intelligently through the rear defrost button. After starting the engine, you need to go to the air conditioning panel area, find the button labeled REAR, and press it to activate it. The indicator light will show the working status. Current flows through the resistance wires inside the mirror to generate heat, quickly eliminating moisture and ice, especially in cold and humid weather. In terms of design, it is linked with the rear window defrost to save space. The electronic unit monitors the ambient temperature and intelligently adjusts the heating time to maintain efficiency. In daily use, I use it in conjunction with the automatic mode, which can automatically activate when the temperature is below 0 degrees, reducing manual operation. Avoid accidentally turning it on when not in use for a long time to prevent battery drain. This function can significantly improve rearview clarity in rainy weather, reducing the risk of rear-end collisions. During maintenance, it is recommended to have a professional regularly check the circuit to ensure the heating element remains intact and highly reliable.
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DiCassandra
11/27/25 3:34am
As a new XTS owner, activating the rearview mirror heating is quite straightforward. After starting the engine, look at the center console near the climate controls for a button labeled 'REAR' or with a defrost symbol. Press it until the indicator light comes on. During light rain or cold weather, turning this on will automatically clear fog and frost from the mirrors, improving visibility without extra steps – very convenient. If it doesn't work, check the owner's manual or fuse box. Even beginners can quickly master this feature to boost driving confidence, especially on slippery roads.
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