2011 GMC Acadia Owner's Manual - Page 240

7-40 Infotainment System Parental Control The RSE system may have a Parental Control feature, depending on the radio. To enable Parental Control, press and hold the radio power button for more than two seconds to stop all system features such as: radio, video screen, RSA, DVD and/or CD. While Parental Control is on, Q displays. When the radio is turned back on, Parental Control is unlocked. A. Battery cover B. Channel 1 or 2 switch C. Power button D. Volume control E. Power indicator light Before Driving The RSE is designed for rear seat passengers only. The driver cannot safely view the video screen while driving and should not try to do so. In severe or extreme weather conditions the RSE system might or might not work until the temperature is within the operating range. The operating range for the RSE system is above −20°C (−4°F) or below 60°C (140°F). If the temperature of the vehicle is outside of this range, heat or cool the vehicle until the temperature is within the operating range of the RSE system. Headphones