Uncut Transponder Ignition Key fits Toyota with 4C Chip, Set of 2

Worked fine, you can program yourself, videos online tutorials. Be patient and follow closely. It will probably take a few tries but much cheaper than paying dealer or buying programming tool. If you aren’t tech savvy might want to just get the programmer

I bought two of these for a 1999 Toyota Avalon XLS. They cut fine and work well mechanically turning on the ignition. The attempted programming of the transponder chips has been a nightmare.The website that the card with the keys, sent me to a website that after entering the make, year, and model of my car. Listed instructions for adding additional key fob remote lock/unlock transmitters etc. It did not have any instructions for adding key transponder chip keys.Please understand, I have spent hours searching and trying different methods of programming Toyota’s. Some were supposedly for my exact car but so far I have gotten no where. I guess if I only accidentally lock my oem key in the car I can get in with these keys but if for what ever reason I lose my original keys then I am in for a costly world of hurt which is what I was trying to avoid by buying these in the first place and as near as I can tell according to all of the information listed these should work on my car. Based on personal empirical experience. They do not! I have dealt with computers all my life. I understand programming electronics with instructions If the error is truly mine then communicate to me workable instructions. I was programming vcrs by the age of six.I am open to changing this review if my situation can be positively remedied.Two stars for keys that worked after being cut. Minus 42 stars because I am miffed and I just want it to work as advertised and that I paid for.[Update 02/26/20]After great consternation and frustration I have found that I lost the master key and I am using the sub key or valet key.Before ordering any transponder (chip) key, check your existing key and ensure that it is in fact the master key. Try unlocking or locking the glove compartment and/or the trunk. Only the master key will work on these.In order to program a transponder chip key, you MUST have the master key in hand for your vehicle.

I saved $140 by buying two keys from Amazon and programming/registering them myself and getting them cut at Home Depot. The locksmith was going to "cut me a deal" and only charge me $80 each. My 1999 Toyota Avalon requires keys to have a transponder chip for them to work, and they have to be registered to the car.I bought two "chipped" key blanks from Amazon that were the Toyota 4C type that my car requires. I got both for under $14, and they got here overnight. I registered the keys myself, in my car, using the procedure below. It was easy and took less than five minutes. Then I took the blank keys to Home Depot and they cut them for $3.50 each. They work great.This is the registration process (there are videos on YouTube):- Take your MASTER KEY (not the valet key) and insert it into the ignition . Do Not Turn! The flashing security light will go out if you have a master key. You must have a master key for this to work.- Within 15 seconds of inserting the master key, depress and release accelerator pedal 5 times.- Within 20 seconds depress and release the brake pedal 6 times.- Remove the master key.- Within 10 seconds insert the new "blank" key into ignition. The security light will continue to flash.- Within 10 seconds depress and release the accelerator pedal 1 time. Your car will start the registration process.- After 60 seconds security light will go off. The new key is registered.Repeat the process to register other keys.

Making use of such a key requires some legwork, but ultimately can save you lots of money. There is a) the key cutting, and b) programming the car to accept the transponder chip signal of the key.a) Key cutting: Most department stores now will refuse to cut a car key for you if you bring it yourself. They want to sell their own, at a hefty price, of course. Find a willing locksmith in your neighborhood that will just do the cut. They will make you sign off that a cut might sometimes fail and not work right, and that it is on your own risk; you might waste your key. I found a good locksmith, paid $5, and the cut worked fine.b) Key programming: Depending on your car, you might find DIY instructions easily, or not at all, or your car might require a professional programming gadget that only some locksmiths and dealerships provide. So do your homework first to see what your chances are. I finally got the programming instructions to work for my 2002 Prius, but there were wrong ones floating around online, too. Sellers of these keys might send you to a website which might have helpful info for your car, or not. In all fairness, it would be an impossible tasks to have verified programming instructions for all car models and years out there.So while your mileage might vary, the key sold here does its job when you do yours.

Didn’t work.Neither one of these keys would register/program.A Toyota brand 4C chip easily registered.

For those that cang program the key its not really your fault. Know that there was a Black key and a Grey key that came with the car. The grey one is not a master and can not be used to program your new key. You need the black key as it is the master key. Follow instructions exactly and it will work.Now as for the key. When i got it, it looked off. It was slightly different in length and i was not sure its copy correctly. I took it to home depot with my existing key and they copied it.....for free! Still worried it wasnt correct but figured id be ok since i only paid $10 for the new key all in. So not bad.Got home, it unlocked the door and turned the ignition over. Good sign. Proceeded to program and it failed to program. I was using the grey key. Figured why not try with my other key (the black one) and it programmed first try with that one.So...TLDR...make sure you have the black one on hand if u plan to order a new blank that you want to program. This one is great.