2011 Chevrolet Volt Owner's Manual - Page 190

6-6 Lighting Exit Lighting The headlamps, parking lamps, taillamps, back‐up lamps, and license plate lamps come on when the vehicle is turned off. Some interior lights also come on when the vehicle is turned off. The exterior lamps and interior lights remain on after the door is closed for a brief period and then turn off. The exit lighting feature can be changed. See Vehicle Personalization on page 5‑53. Battery Power Protection The battery saver feature is designed to protect the vehicle's 12‐volt battery. If the exterior lamps or any interior lamp is left on and the vehicle is turned off, the battery rundown protection system automatically turns the lamps off after about 10 minutes.