Where is the Buick rearview mirror switch located?

[RobertLynn]

Buick rearview mirror button is located on the side of the driver's door. The correct usage of rearview mirrors is as follows: 1. Start with both sides, observe the left rearview mirror until it is adjusted to see the car body in the mirror, then begin fine-tuning. The proportion of the car body in the mirror should generally be controlled within 1/4. 2. Next, adjust the horizontal position. Generally, place the distant horizon at the center of the rearview mirror vertically. 3. Begin adjusting the interior mirror. The interior mirror compensates for the right blind spot, so it should allow you to see the right rear window. Maintain your usual sitting posture, then check if the rear window is in the center of the rearview mirror, and follow the same "horizon guideline" as with the side mirrors.