Before you begin:
* Gather your tools: You'll likely need a trim panel removal tool (plastic pry tool), screwdrivers (Phillips and possibly flathead), possibly a socket set, and of course, your new door handle.
* Consult a repair manual: A Chilton's or Haynes repair manual specific to your year and model will provide detailed diagrams and instructions, tailored to your exact vehicle. This is highly recommended.
* Disconnect the battery's negative terminal: This is a safety precaution to prevent short circuits.
General Steps (Interior Handle):
1. Remove the interior door panel: This usually involves carefully prying off the panel using the trim panel removal tool. Start at the edges and work your way around, being careful not to damage the panel or the clips. There are usually screws hidden behind access panels (e.g., armrest, door pull).
2. Disconnect the door handle linkage: The interior handle is connected to a rod that operates the locking mechanism. You'll need to disconnect this rod. This may involve removing a clip or unbolting a connection.
3. Remove the old handle: Once the linkage is disconnected, the handle itself should come off relatively easily. It might be held in place with screws or clips.
4. Install the new handle: Reverse the removal process. Connect the linkage, attach the handle, and carefully reattach any screws or clips.
5. Reinstall the interior door panel: Carefully snap the door panel back into place, ensuring all clips are properly engaged.
General Steps (Exterior Handle):
1. Remove the interior door panel: (Same as above) This step is necessary to access the exterior handle mechanism from the inside.
2. Disconnect the exterior handle linkage: The exterior handle usually has a rod that connects to the interior mechanism. You'll need to disconnect this. Again, a repair manual will be invaluable here as the connection method varies.
3. Remove the exterior handle: This may involve removing screws from the inside of the door after removing the interior panel or there might be clips holding the handle in place. Sometimes, you need to carefully separate the handle from the door's exterior skin.
4. Install the new handle: Reverse the removal process. Make sure the linkage is properly connected and secured before reassembling everything.
5. Reinstall the interior door panel: (Same as above)
Power Handles (Additional Steps):
If your handle is power-operated, you'll also need to disconnect the electrical connector. This usually involves just unplugging a connector, but be careful not to damage the wires.
Important Considerations:
* Take photos: Before you begin disassembling anything, take plenty of photos. This will help you remember how everything goes back together.
* Patience is key: This process can be fiddly and time-consuming, especially if you're not familiar with car repair.
* Don't force anything: If something doesn't seem to want to come apart, stop and consult your repair manual. Forcing things can lead to breakage.
Disclaimer: This is general guidance. Always consult a repair manual specific to your 2000 Mercury Sable/Ford Taurus for detailed, accurate instructions. If you're not comfortable working on your car, it's best to take it to a qualified mechanic.