These are the things we cannot understand Sometimes it is round, sometimes it sticks to the surface and sometimes it is flush with the surface.. Their shapes vary depending on the vehicle, but they are certainly there.

Agree What are these notches or protrusions and what do they do?

Often these circular indentations or protrusions are actually solar load sensors.

Often on a removable plate, speaker grille or defrost vent. has been ridden. It is located largely on both sides of the instrument panel, again to accommodate differences in daylight.

Agree “Why are they under the windshield of vehicles and not somewhere else?” If you ask, the purpose of this is is to detect how much sunlight enters the vehicle. In addition, the solar load sensor is part of the climate control system.

Again, this sensor tracks the intensity of sunlight.

Moreover, to increase the comfort level of the driver and passengers on sunny days. control of heating, ventilation and air conditioning institutions.

Even in bright sunshine, increase fan speed and open doors to improve cooling It can even lead to:

On the other hand, these sensors work using photodiodes, which are active circuit elements that are sensitive to light energy.

A semiconductor diode that converts photon radiation can also be sensitive to infrared, X-rays and gamma radiation. But As the light intensity increases, the resistance of the diode increases. and ultimately less volts reach the vehicle’s internal monitoring systems through the sensor.

In summary, it is no coincidence that solar energy sensors are placed under the windshields of vehicles. And if these sensors didn’t exist, Your car can absorb 2x more heat and as a result, it is inevitable that you will encounter various problems in your vehicle.

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