1996 Ford Crown Victoria Owner's Manual - Page 61

Under certain conditions, the Check Engine Warning Light may come on if the fuel cap is not properly installed. If the Check Engine Warning Light comes on and you suspect that the fuel cap is not properly installed, pull off the road as soon as it is safely possible and turn off the engine. Remove and replace the fuel cap, making sure it is properly seated. After completing the three consecutive warm up cycles and on the fourth engine start up, the Check Engine Warning Light should turn off. If the light does not go off after the fourth engine restart, have your vehicle serviced by your dealer or a qualified technician. Air Bag Readiness Light The Air Bag Readiness light will go on each time you start your vehicle and will remain on for about 6-8 seconds indicating normal air bag operation. If this light stays on continuously or flashes, or if the light never comes on at all, there is something wrong with the Air Bag Supplemental Restraint System and your vehicle should be taken in for service to the nearest Lincoln-Mercury dealer as soon as possible. Unless serviced, the Air Bag Supplemental Restraint System may not function properly in the event of a collision. 68