
recirculation button is located on the air conditioning panel of the center console. The Mercedes-Benz's external circulation and internal circulation share the same button, collectively referred to as the circulation button. When the light is on, it indicates internal circulation, and when the light is off, it indicates external circulation. The internal circulation state closes the airflow channel between the inside and outside of the vehicle. Without turning on the fan, there is no airflow circulation. When the fan is turned on, the inhaled airflow only comes from inside the vehicle, forming an internal airflow circulation. Mercedes-Benz is a German luxury car brand. Taking the Mercedes-Benz E-Class as an example, its body dimensions are 5078mm in length, 1860mm in width, and 1484mm in height, with a wheelbase of 3079mm. The car is equipped with an engine with a maximum power of 135kw and a maximum torque of 280nm.










