Should You Use Internal or External Air Circulation on Highways in Summer?
1 Answers
You should use external air circulation on highways. Here are some precautions for using internal and external air circulation on highways: 1. Open the windows or use external circulation appropriately: When driving on highways for long periods, it's advisable to open the windows or use external circulation to maintain fresh air inside the car and prevent dizziness caused by lack of oxygen. Do not close the windows or turn off external circulation when sleeping in the car. 2. The choice between internal and external circulation depends on the season and weather: When the weather is comfortably cool, you can use external circulation; when it's hot, avoid using external circulation. On rainy days, use internal circulation and also turn on the defogging function to prevent fog from obstructing your vision.