Where is the reverse radar switch for the Buick Excelle?

[CollinLee]

The switch for the Buick Excelle's reverse radar is located under the left taillight in the trunk. Generally, when the gear is shifted into reverse (R position), the reverse radar system activates. If the self-check is normal, the system will emit a brief beep to indicate readiness. When shifting out of reverse, the reverse assist system automatically turns off. More information about the reverse radar is as follows: 1. The reverse radar is a safety auxiliary device when parking or reversing the car, which can inform the driver of the surrounding obstacles through sound or more intuitive display. 2. It relieves the driver's troubles caused by looking around when parking, reversing, and starting the vehicle, and helps eliminate blind spots and unclear vision defects.