2011 Cadillac DTS Owner's Manual - Page 339

Vehicle Storage { WARNING: Batteries have acid that can burn you and gas that can explode. You can be badly hurt if you are not careful. See Jump Starting on page 6 ‑ 38 for tips on working around a battery without getting hurt. Infrequent Usage: Remove the black, negative (−) cable from the battery to keep the battery from running down. Extended Storage: Remove the black, negative (−) cable from the battery or use a battery trickle charger. To be sure the vent hose (A) is properly attached, the vent hose connector (B) must be securely reattached to the vent outlet (C) on the side of the battery and the vent assembly grommet (D) must be secured to the floor pan (E). 6-37