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What is the function of Volkswagen original blind spot lane-changing rearview mirror early warning radar?

Volkswagen original blind spot lane-changing rearview mirror warning radar has the following functions:

1. The rear area of the vehicle is monitored by radar sensors, and the current position, driving speed and driving direction of other vehicles in adjacent lanes can be detected within a certain range.

2. Driver assistance system: The lane change assistance system is a driver assistance system. If there is a car behind the driver when changing lanes, the rearview mirror of the car will light up an indicator light, and the steering wheel of some cars will vibrate.