What would be the best place and price to get a new key for my 2000 lincoln LS, and would it be a chip key for that year or no ?

SOURCE: 2000 Lincoln LS and the Engine Light came on. Codes 0171 0174

you probably have a vacuum leak. check all your hoses pcv hose for sure. it means the engine is seeing too much air with the fuel.

SOURCE: lINCOLN ls bRAKE lIGHT REPLACEMENT

One of 2 ways.......

#1) mounting screws on the exterior of the brake light lens.

#2) in the trunk behind the carpeting, usually this is the easiest way. either way the bulb is held in by a twist lock bulb holder.

GGBMDB

SOURCE: 2000 lincoln ls heater not working...thermostat?

- If temp guage reads normal, the lack of heat may be due to the Heater Control Valve. Located in front of the radiator. Lower passenger side. A real bugger to replace.
- The plastic cap just over the thermostat is key in re-filling the anti freeze and bleeding air.

SOURCE: lincoln ls transimission fluid

It is located on the transmission pan. Their is a "fluid level check screw" that you will need to take out. You aren't going to be able to just dump a quart of fluid in and be good though. These transmissions are designed under normal driving conditions to never have to be serviced and that includes the fluid. But if your like me, you like to hot rod it once in a while. Then you should change your fluid every 45,000 miles or so. The drain plug is at the very bottom of the pan. You are gonna need a little over 11.5 quarts of Mercon(R) V Transmission fluid for the 3.0 as well as the 3.9 liter. The amount of fluid needed for the transmission is the same regardless of the engine you have.
Hope this post will help someone in the future. Also their is no dipstick to check the fluid level. You have to take the screw/bolt out on the side of the Tranny Pan.

AadoubleA

SOURCE: 2000 lincoln ls bad ball joints! should i replace whole knuckle or just ball joints

yes you can buy just the ball joints