Your vehicle was supplied with a jack for emergency road repairs. This jack is fine for changing a flat tire or other short-term procedures not requiring you to go beneath the vehicle. Do not attempt to use the jack on any portions of the vehicle other than specified by the vehicle manufacturer. Always block the diagonally opposite wheel when using a jack.
A more convenient way of jacking is the use of a garage or floor jack. You may use the floor jack on either side of he front of the vehicle by positioning the jack on the frame. However, it is usually easier to raise the front of the vehicle at the front crossmember.
At the rear of the vehicle, the jack can be positioned under the rear axle housing tubes, between the suspension arm brackets and the differential housing. Do not raise the rear of the vehicle using the differential housing as a lift point.
On vehicles equipped with air suspension, the electrical power supply to the air suspension system must be shut off before jacking the vehicle. This can be accomplished by disconnecting the battery or turning off the power switch located in the luggage compartment, usually on the LH side (Continental and Mark). The suspension switch is located on the right side of the trunk in Town Cars. Failure to do so may result in unexpected inflation or deflation of the air springs that may result in shifting of the vehicle during these operations.
The following safety points cannot be overemphasized:
Always block the opposite wheels or wheels to keep the vehicle from rolling off the jack.
When raising the front of the vehicle, firmly apply the parking brake.
When the drive wheels are to remain on the ground, leave the vehicle in park to help prevent it from rolling.
Never use cinder blocks or stacks of wood to support the vehicle, even if you're only going to be under it for a few minutes. Never crawl under the vehicle when it is supported only by the tire-changing jack or other floor jack.
Always use jackstands to support the vehicle when you are working underneath. Place the stands beneath the vehicle's jacking brackets. Before climbing underneath, rock the vehicle a bit to make sure it is firmly supported.
Small hydraulic (bottle jack), screw or scissors jacks are satisfactory for raising the vehicle. Drive-on trestles or ramps are also a handy and safe way to both raise and support the vehicle. Be careful though, some ramps may be too steep to drive your vehicle onto without scraping the front bottom panels.
Never place the jack under the radiator, engine or transmission components, severe and extensive damage will result when he jack is raised- Additionally, never jack under the floorpan or bodywork.