2007 Cadillac CTS-V Owner's Manual - Page 112

Ignition Positions With the key in the ignition switch, you can turn the key to four different positions. A (OFF): This is the only position in which the key can be inserted or removed. This position locks the ignition and shifter on automatic transmission vehicles, and the ignition and steering wheel on manual transmission vehicles. B (ACCESSORY): This position allows you to use things like the radio and the windshield wipers when the engine is off. This position will allow you to turn off the engine. C (ON): This position is for driving. If your vehicle has an automatic transmission and you turn off the engine, the transmission will lock. If you need to shift the transmission out of PARK (P), the ignition key has to be in ACCESSORY or ON. The battery could be drained if you leave the key in the ACCESSORY or ON position with the engine off. You may not be able to start your vehicle if the battery is allowed to drain for an extended period of time. D (START): This position starts the engine. Notice: Using a tool to force the key from its cylinder could cause damage or break the key. Use the correct key and turn the key only with your hand. Make sure the key is all the way in. If it is and you have a manual transmission vehicle, turn the steering wheel left and right while you turn the key hard. If none of this works, then your vehicle needs service. 112