Will A Lexus Smart Key Work?

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Random question of the night:

Anyone know if a Lexus smart key could be programmed to work with a Limited?

It could be done if the FCC ID and IC were the same on both smart keys, I believe. I just checked the smart key on the ES350 and compared it to the 4Runner. They match except for the last three letters in both the FCC ID and IC .

What are your plans?
 
It could be done if the FCC ID and IC were the same on both smart keys, I believe. I just checked the smart key on the ES350 and compared it to the 4Runner. They match except for the last three letters in both the FCC ID and IC.
Once a smart key, such as the 06 and up IS, GS, LS and ES350 has been programmed (seeded) they can not be reused or programmed again. Do not buy a used one.
 
Once a smart key, such as the 06 and up IS, GS, LS and ES350 has been programmed (seeded) they can not be reused or programmed again. Do not buy a used one.
Gotcha. Good thing you posted that for the OP. Although, if I were interested in doing this myself, I wouldn't buy a used one to begin with since the backup key needs to be cut to match the new car anyway.
 
It could be done if the FCC ID and IC were the same on both smart keys, I believe. I just checked the smart key on the ES350 and compared it to the 4Runner. They match except for the last three letters in both the FCC ID and IC .

What are your plans?

Thanks for checking! Well, It's nitpicking I know, but I have always been disappointed with how the Limited's key looks. The SmartKey functionality is too cool to have such a bland looking key. I have wanted something a little sleeker, or maybe even more convenient (think if this was built into a cell phone case), it would be one less thing to worry about.

I have had the smart key assembly apart multiple times and you could make a different housing for the components that would be much slimmer than the current one, especially if you relocated the battery.

What really got me thinking, was when I stumbled upon a new(er) version of the Lexus smart key:

images


It is the thickness of about 2 credit cards, and can just be tucked into your wallet and forgotten about. This peaked my interest, so I did some research.

The part numbers were a little annoying to track down, but here it is:
Normal Lexus SmartCard: 89904-50641
F Series Lexus SmartCard: 89904-50480

After this I found a place to buy them <a href="http://lexus.sewellparts.com/accessories-catalog/Keys/LX570-2010/2694.html">HERE</a>

I knew SmartKeys were expensive so I didn't know what I was expecting to find, but....

$250 + The key (which is not included and can be found <a href="http://www.abc-lockkey.com/05-chanpin/p-001-1.asp?id=204">HERE</a>) + laser cutting of the key + programming the key at dealer = More than I am willing to spend on a key that I don't even know will work.


So I looked around a bit more. From what I was reading, it seems that as long as the key works on the same frequency as your factory key, it can be programmed to work. After some searching, the frequency of our factory key is: 314.3MHz . I found that info <a href="http://www.abc-lockkey.com/05-chanpin/p-001-1.asp?id=404 ">HERE</a> (Says the key is for a landcrusier, but looks the same. Scientific, I know.)

So now I had to find the frequency of the key for the Lexus SmartCard.
This was harder, but then I got lucky. A nice eBay seller had that posted on his page <a href="http://www.ebay.com/itm/Lexus-OEM-touchless-smart-card-BRAND-NEW-/250986127231?pt=LH_DefaultDomain_2&hash=item3a6ff05f7f#ht_808wt_1206">HERE</a>. And what do you know, the frequency is a lovely 314.3MHz .

From the description:
"Brand New OEM touchless smart card key for
Lexus RX models 2008-2012 or other model equipped with smart key system with frequency 314.35MHz.
It is the size of a credit card,
it works just like your Fob remote,
except it can fit right inside your wallet!"

So all in all, I am still not totally sure it will work, and have too many other "more important" mods lined up than to drop the money on this now. I also might consider making something to house the key before I gave this a try. But I thought I would ask around here and post what I found in case any of your guys were interested.
 
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Having a key for my 4Runner with the Lexus symbol on it would bug the hell out of me. I just rented a Chrysler 300 and the key said Dodge on it. It tells me the company has no attention to detail; wonder what other corners they cut?

I do agree that the smart key for the 4Runner should be cooler looking than it is. Also, it feels extremely cheap.
 
Having a key for my 4Runner with the Lexus symbol on it would bug the hell out of me. I just rented a Chrysler 300 and the key said Dodge on it. It tells me the company has no attention to detail; wonder what other corners they cut?

I do agree that the smart key for the 4Runner should be cooler looking than it is. Also, it feels extremely cheap.

I would agree, and would probably come up with a solution to fix that if I ever got it. But also you would never have to look at it so that it a plus.
 
I would think one of the biggest problems would be getting the dealership to program it. They looked at me like I was crazy when I asked them to turn off the seatbelt chime. They would probably call the cops on me if I asked this. :D
 
agree smart key yuk on my limited

I traded in my 2011 limited and now have a 2012 highlander limited with the smart key. It is the same size and shape however it is black molded hard plastic that looks much better. it also will never show scratches
 
The Rav4 one is identical to the 4Runner, minus it's black as well. No extra button like the highlander.
 
I really like the Lexus credit card key fob and a great idea for Limiteds equipped with a Smart Key sysyem. Just leave it in your wallet!

My Limited fob came with the special edition carbon fiber??? :shrug: .......jk
keyfob.jpg~original
 
I really like the Lexus credit card key fob and a great idea for Limiteds equipped with a Smart Key sysyem. Just leave it in your wallet!

My Limited fob came with the special edition carbon fiber??? :shrug: .......jk
keyfob.jpg~original

Did you just do that yourself?
 
I really like the Lexus credit card key fob and a great idea for Limiteds equipped with a Smart Key sysyem. Just leave it in your wallet!

My Limited fob came with the special edition carbon fiber??? :shrug: .......jk


I like the carbon fiber vinyl! Definitely wins for the cheap but effective route. I am unsure how I am going to proceed with this, I was just interested in what you guys thought about the general concept of getting a nicer key. Once I have all the larger (and more expensive) items on my truck I am sure I will come back to this and figure something out.
 
I am adding some information I found over at the Lexus forums... No one has tried doing this for the 4Runner, so if someone does the info is here. It's not one of my "top of the list of things to do", but it would be cool to have.

This one just shows you how to program the key using Techstream. I'm guessing there aren't too many used Smart Card Keys so we dont need to get the code and reseed to wipe all the keys and start fresh.
So my smart card came in today and I programmed it to the car. - Club Lexus Forums


This link here talks about not matching the FCC ID on the key, but the "language code" which can be found on the inside of the key. I'm guessing these are commonly used parts between Lexus and Toyota so maybe our keys match those of the GX or LX...?? (Take a look at the Lexus GX lower dash, there is a button for a gas cap release, which we don't have on the 4Runner, but we do have the spot for the button.)
Club Lexus Forums - View Single Post - Smart Card Key Programming
 
I came across this tidbit on eBay.
eBay Guides - How to get the best deal on a keyless entry remote key.

It claims that you can buy any smartkey for your vehicle as long as the FCC ID number matches up. I did a search with HQY14ACX and found that this matched up not only with Lexus smartkeys, but also with other models' smartkeys (Prius, Highlander, etc..). Most of these run less expensive than the 4R's. Why that's the case is beyond me since the 4R one is IMO generally uglier and cheapier looking.

Just wondering if anyone has attempted to program cross the designated smartkey models with any success.
 
I've given this subject a lot of thought. I keep my key in my wallet and a thinner piece would be awesome.

You don't need to find a new key, just make the one we have slimmer. If you pop it open, you will see how fat the plastic frame is. It should be possible to create a ridgid (important) frame that fits over the chip with a much thinner section. You will give up use of the buttons, but I don't use them anyway.

Anyone work in a CNC shop?
 

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