Use Internal or External Air Circulation Normally?

1 Answers
StJessica
07/29/25 3:37pm
Switch between internal and external air circulation based on the environment. Here are specific explanations about internal and external circulation: Internal circulation is recommended when using air conditioning in summer to prevent hot air from entering the car, during smoggy days, or in traffic jams to avoid outside air entering the vehicle. External circulation is advisable when driving on highways to ensure fresh air circulation, when smoking to quickly expel smoke, or after prolonged sun exposure to release toxic gases from the car. Additional information: Precautions: Shortly after entering the car, open the windows or turn on the external circulation ventilation system to introduce fresh air. Avoid driving for long periods with closed windows and doors, and never sleep or rest for extended periods in a sealed car. After purchasing a new car, treat it like a newly renovated house by maximizing air exchange between the inside and outside to help release harmful gases as quickly as possible.
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