Why does the Buick Excelle not have an external circulation mode?
3 Answers
Buick Excelle does have an external circulation mode, with the internal and external circulation sharing the same button. Related information: 1. Introduction: External circulation refers to heating or cooling the air outside the vehicle before introducing it into the cabin, facilitating gas exchange between the interior and exterior. 2. Expansion: The Buick Excelle is equipped with the latest third-generation small-displacement inline 4-cylinder DVVT-Ecotec engine, paired with a 5-speed manual transmission or a 6-speed automatic manual transmission. It offers three displacement options: 1.6L, 1.8L, and 1.6T. The 1.6T model features the same engine used in the Buick Regal 1.6T, delivering a maximum power of 132KW and a maximum torque of 230N·m, with performance comparable to a mid-to-high-end car's 2.4L naturally aspirated engine.
To be honest, after nearly twenty years in the automotive industry, the Buick Excelle's exterior air circulation function has always been there and never been removed. This car's air conditioning system follows standard design—there's a button with an arrow or labeled "CIRC" on the dashboard's AC panel. Press it once to switch to exterior circulation, allowing outside air to enter and refresh the cabin environment. Why do some people think it's missing? Maybe the button is too small, the label isn't clear, or newer touchscreen models are prone to misoperation. Automatic AC settings might default to interior circulation, requiring manual switching. In daily maintenance, infrequent use of exterior circulation can lead to dust buildup or odors, so it's recommended to clean the air ducts monthly. On highways, using exterior circulation enhances safety by reducing fogging and improving ventilation; in urban areas with smog, interior circulation is preferable. If the button malfunctions, it could be due to oxidized contacts or wiring issues—try cleaning dust yourself first, and if that doesn’t work, seek professional inspection.
As a long-time owner of the Excelle, I've driven this car for five years without encountering any issues with the external air circulation. There's a button on the AC panel labeled "RECIRC" or featuring an airflow icon—simply toggle it to activate fresh air intake. My guess is you might have missed it due to its placement; mine is tucked away in the lower right corner. I was puzzled too when I first got the car, until I checked the manual. I frequently switch between modes while driving: using recirculation in traffic to save energy, and external circulation on highways or after rain to stay alert and prevent dizziness. Accidental deactivation is common, so I make it a habit to test the button weekly, cleaning it if dirty to avoid minor issues escalating. The external air filter proves invaluable when air quality is poor.
