1999 Ford F150 Owner Guide 1st Printing - Page 147

Driving Snowplowing with your air bag equipped vehicle Your vehicle is equipped with driver and passenger air bags. The air bags are designed to deploy in a collision with a solid barrier at a range of 13 to 23 km/h (8 to 14 mph) or a parked car at a range of 25 to 45 km/h (16 to 28 mph). Careless or high speed driving while plowing snow which results in vehicle decelerations equivalent to or greater than the air bag deployment impact speeds listed above can deploy the air bag. Such driving also increases the risk of accidents. All occupants of the vehicle, including the driver, should always properly wear their safety belts, even when an air bag SRS is provided. Never remove or defeat the "tripping mechanisms" designed into the snow removal equipment by its manufacturer. Doing so may cause damage to the vehicle and the snow removal equipment as well as possible air bag deployment. Do not attempt to service, repair, or modify the Air Bag Supplemental Restraint System or its fuses. See your Ford or Lincoln-Mercury dealer. Engine temperature while plowing When driving with a plow, your engine may run at a higher temperature than normal because the attached snowplow blade will restrict airflow to the radiator. H C 147