1997 Lincoln Town Car Owner's Manual - Page 205

The key wrench has a registration number attached to it. Keep the registration number in a safe place. Complete the registration card and return it to the manufacturer as soon as you buy the vehicle. To replace the key wrench, send the I.D. card to the manufacturer. Anti-Theft Wheel Lug Nuts (If equipped) If your vehicle has this option, one of the lug nuts on each wheel locks and must be unlocked with a special key. The key and registration card are attached to the lug wrench and stored with the spare tire. If you lose the key, send the registration card to the manufacturer (not the dealer) to get a replacement key. NOTE: If entire lug wrench/lug nut key assembly is lost, see your nearest Ford or Lincoln-Mercury dealer who has access to a master set of keys. NOTE: DO NOT USE A POWER IMPACT WRENCH ON THE LUG NUT KEY. The anti-theft lug nut and key Removing the anti-theft lug nut Insert the key over the locking lug nut. Make sure that you hold the key square to the lug nut. If you hold the key on an angle, you may damage the key and the lug nut. Place the lug nut wrench over the lug nut key and apply pressure on the key with the wrench. Turn the wrench in a counterclockwise direction to remove the lug nut. 203