3. Hold the Unlock Button to Roll Down All Windows and Vent Hot Air
On a scorching day you open the door and get blasted by oven-like air. Instead, stand outside and hold the unlock button on your key fob for three to five seconds. In many cars the windows automatically roll all the way down, quickly venting trapped heat before you even climb in.
This simple trick drops interior temperature dramatically in seconds and saves your AC from working overtime when you finally start the engine. It’s a real fuel saver and comfort booster on hot summer days. True drivers use it every single time the car has been baking in the sun.