What are the hidden functions of 9 BMW 74?

In fact, this is an intimate hidden function of BMW, which is called "roadside monitoring function". In order to let the driver better observe the situation along the shoulder and the body of the road and avoid rubbing his car.

this hidden function can be activated when the vehicle is put into the "r" gear, but it must be remembered that the rearview mirror adjustment knob in the figure below should be turned to the left, otherwise the right exterior rearview mirror will not turn down.

"Warm Man" rearview mirror Most models of BMW are equipped with rearview mirror heating function, which is a perfect configuration for rainy and snowy weather. The working principle is to heat it to a certain temperature through the heater behind the lens, and then disperse the fog on the mirror with the temperature. But you can't seem to find the button to open TA. Effect). Write by option; Disconnect.

the rearview mirror heating is automatically turned on, but the following three conditions must be met: after the windshield is turned on, the rearview mirror heating will be turned on at the same time? When the rear windshield is lightly scraped to the automatic mode, the rearview mirror heating will be turned on at the same time.