1996 Ford Aerostar Owner's Manual - Page 63

ON allows you to test your vehicle's warning lights (except the brake system warning light) to make sure they work before you start the engine. The key returns to the ON position once the engine is started and remains in this position while the engine runs. START cranks the engine. Release the key once the engine starts so that you do not damage the starter. The key should return to ON when you release it. The START position also allows you to test the brake warning light. Removing the Key From the Ignition 1. 2. Put the gearshift in P (Park). Set the parking brake fully before removing your foot from the service brake. (This will avoid "binding" or "loading" the park gear if you park on a grade.) Turn the ignition key to LOCK. Remove the key. 3. 4. 62