Can You Get Poisoned by Sleeping in a Diesel Car with the AC On?

[Esther]

Sleeping in a diesel car with the air conditioning on may lead to poisoning. When idling with the windows closed and the AC running, the system can draw exhaust fumes into the cabin. These fumes contain carbon monoxide and other harmful gases, which, if inhaled excessively, can cause unconsciousness, brain hypoxia, or even death. Below are precautions for using car air conditioning: 1. Avoid prolonged continuous use: If the cabin temperature has reached a comfortable level, turn off the AC or take breaks between uses. Extended operation increases condenser pressure, damaging the cooling system. 2. Ventilate the cabin: Upon entering the vehicle, open windows and activate external circulation to expel hot air. 3. Limit internal circulation usage: Internal circulation recirculates air within the closed cabin, gradually reducing oxygen levels. Incomplete fuel combustion in the engine may also allow carbon monoxide to leak into the cabin, deteriorating air quality and posing health risks.