Herb Chambers BMW of Sudbury on Instagram: "My sales person never told me these BMW key fob secrets! 1. Rolling down the windows. Cars can get so hot in the summer and you can roll down the windows by double pressing the unlock button twice and holding it on the second press. 2. Rolling up the windows. Ever get stuck in a sudden rainstorm? Easiest way to roll up all your windows is by double pressing the lock button twice and holding it down on the second press. 3. Close the side mirrors. If you