I have a Honda Accord 2005 - (FOB has a transponder chip. - I never knew that).
Just like many of the thousands of people that have the broken plastic on their Honda Accord Key/FOB, I decided to buy this $6.00 shell and do it myself. Honda service wanted $165.00 to replace it, but I figured a $6.00 part and a ten minute job was the better option for me. Well, it was a bit more challenging than I thought. It took me five minutes to switch the module and key to the new FOB. Pressed the lock/unlock/trunk buttons and it worked fine. Then, I tried to start the car, and the engine would only crank and not start. Hmmm!!
So, after watching YouTube to see why his happens, this is where you learn things that you never knew before The old FOB has a transponder chip in a "hidden" slot. When you first open the old FOB, you see the slot but think nothing of it, so you ignore it. Although you think nothing of it, that slot holds the chip. There is a very tiny cover on that slot. Use a small flat screwdriver to pop off the cover to the slot. Then, you need to pull out the tiny chip. In my case, the chip was very tight in that slot. I had to pry away the plastic edges of the slot before the chip came out. After that, I just dropped the chip into a open space on the new FOB. Note: The new FOB does not have the same type of chip slot as the old FOB. The new FOB just has a open space. Because of this, I had to use small pieces of electrical tape to hold the chip into position so that it does not move around. - see attached picture. After all this, the key worked fine and the car started up OK. The buttons line up ok, but are a little deeper (sunken in) a little more than I wanted, but still OK.
BTW: Getting the new FOB covers to snap together took many attempts to line up. The covers were prevented from snapping together because that plastic key molding kept kept interfering. I had to shift it back/forth a ton of times before getting the covers to snap together.
Important Notes:
1. It was a bit of a struggle to pull out the transponder chip from the old FOB slot. Be careful not to break the chip.
2. The product details on this Amazon page do note that people need to transfer the transponder chip to the new FOB. However, I don't think that people really understand what this means because there is nothing on the old FOB that looks like a chip. The chip is hidden in that plastic slot.
3. There are certain years/models of cars that don't use a transponder chip, thus it would only take a minute to switch to the new FOB - Hence why you see so many good reviews stating it was easy to change out. The seller needs to put that warning in boldface fonts and warning people that they should check their current FOB first. (just a friendly suggestion).
4. If your FOB has a transponder chip, and you are hesitant or not sure how to transfer it to the new FOB, then I suggest you pay Honda the $165.00 to get a replacement. Not worth getting stuck somewhere with your car not starting because you did not change out the chip correctly.
Overall, yes, I saved $165.00 and did the job myself for $6.00, but wow, this (the chip) was a challenge.
On YouTube, so a search for "Honda Key FOB Immobilizer Hack, Broken Key".