1997 Honda Prelude Owner's Manual - Page 50

Keys and Locks LOCK (0) - You can insert or remove the key only in this position. When you turn the key from LOCK to ACCESSORY, you may have to turn the steering wheel to release the anti-theft lock. To switch from ACCESSORY to LOCK, you must push the key in slightly as you turn it. If your car has an automatic transmission, it must also be in Park. The anti theft lock will lock the steering column when you remove the key. ACCESSORY (I) - In this position, you can operate the audio system and the accessory power socket. ON (II) - This is the normal key position when driving. All features and accessories on the car are usable. Several of the lights on the instrument panel come on as a test when you turn the ignition switch from ACCESSORY to ON (see page 29). START (III) - Use this position only to start the engine. The switch returns to ON (II) when you let go of the key. The engine will not start if the Immobilizer System does not recognize the key's coding (see page 47). You will hear a reminder beeper if you leave the key in the ignition switch in the LOCK (0) or ACCESSORY (I) position and open the driver's door. Remove the key to turn off the beeper. Removing the key from the ignition switch while driving locks the steering. This can cause you to lose control. Remove the key from the ignition switch only when parked. Instruments and Controls