A quick tutorial for those who don't know what a transponder is (which I did not), or how to get it out and move it to the new key:
In the shell there is a small (roughly 1/8" X 1/4" X 3/16") rectangular piece off to one side of the key shaft in the part of the key toward the blade (the front). That rectangular piece is a hollow that contains a small computer chip. That chip is an electronic device that tells the ignition system of the car that it is OK to allow the car to start. If it is not in the new key shell the car starter will turn, but the ignition will not energize and you will run your battery down trying to start the car.
This surgery requires the following tools:
Razor knife with a _new_ blade, small Phillips screwdriver, small flat screwdriver or something flat to pry with, glue (silicone tub glue works well), a toothpick or paper clip and a small clamp of some kind (a clothes pin would work).
Take the screw out of the old shell and pry it open (if it doesn't simply fall apart like mine did).
Remove the button set and lay it aside.
Using a new blade (this is important, more people have been accidentally cut with dull knifes than sharp ones) make two cuts on the short ends of the inside part of the plastic rectangle holding the transponder. That frees the long side of the rectangle closest to the center of the key.
Pry the resulting long side away from the transponder.
Now cut the plastic of the short side on either end of the outside part of the rectangle.
Pry those two ends away from the transponder.
Using the flat screwdriver, pry the transponder out of its holder.
(TAKE NOTE, I made sure that the end of the transponder that was toward the key blade in the original shell was toward the key blade when I put the transponder into the new key head. I don't know if this makes a difference or not, but it can't hurt and the key might not allow the car to start if the transponder is pointed the "wrong way". Both of my keys worked first time after I did it this way.)
Put a blob of silicone on the toothpick and force the blob into the new key head's transponder holder.
Push the transponder into the new key head. (If you want to get really fancy, trim down the little rectangle of plastic that was on top of the transponder in the old key head with a pair of needle nose pliers holding it so you don't cut your fingers and glue it on top.)
Put the clothes pin/clamp/weight on the transponder to hold it in place.
Leave the transponder glue dry for a half hour or so.
Put the buttons back in the shell.
Screw it shut and try it out.
The doing is a lot simpler than the telling.Did not fit the 2009 Honda accord key chip. There was a piece of plastic inside which prevented key chip from fitting.I was looking for a replacement key where the metal area could be removed since that is what I needed to replace on my broken key. The metal key area was attached to the plastic outer casing and could not be removed. I returned the item & was given my refund without a problem.Pefect to my needs it saved me over 180 usd of having to buy a bran new key at dealer just for plastic brakage on my old key, perfomr well, looks nice and is solid.The alternative was to get a complete new key. The dealer wanted $250. My locksmith retro fitted the electronics in my old key and cut this one for $7. For under $20 I have what Honda wanted to charge me $250 for.
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