2005 Cadillac CTS Owner's Manual - Page 93

A (OFF): This is the only position in which you can insert or remove the key. This position locks the ignition, steering wheel and transmission. It is a theft-deterrent feature. 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, but still turn the steering wheel. 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 ON. D (START): This position starts the engine. Key Release Button (Manual Transmission) The key cannot be removed from the ignition of manual transmission vehicle unless the key release button is used. To remove the key, do the following: 1. Turn the key to ACCESSORY. 2. Press and release the button and then turn the key to OFF. Do not hold the button in while turning the key to OFF. 3. Pull the key straight out of the ignition switch. 2-23