guacodans

Hello,
Just bought a used 2007 RX 350 with one key.
I bought a 2nd key & 4D OBD2 programmer on ebay.

Question - there are 2 sets of instructions with the key. Do I need to follow both, or just one. If the latter, which one (I'm hoping the one titled "Lexus/Toyota 4D chip programming")

FYI, have not been able to get a coherent response from the seller, hence the question here.

maximizese

Is there anyone with Techstream in your area? I bought my copy off Amazon for $30 and used it to program and extra that I had cut by a locksmith. I'd be hesitant to follow the directions on the sheet of paper you have. I don't have much faith that each step is concise and I wouldn't want to accidentally deactivate my only key if something doesn't go right. If you were in Orange County, Ca I'd be more than happy to do this for you.

DennisMik

You have 2 different programming instructions because one is for the keyfob (the buttons that lock and unlock the doors) and the other set is to get the car to start with that key.

The instructions in the photo on the left are for the keyfob part of the key.

The instructions on the right side of the photo are for getting the key to start the car. I don't know if that 4D gizmo will work or not.

bwhitsonjr

I am a locksmith... and we have a computer with software to program the key. In instances where the key is provided most locksmiths will charge a flat rate for cutting and programming the key. In our case it's $80. Not sure what area of Texas you live but if you call your local locksmith and ask you might be surprised. If I can be of anymore help please let me know!

-Bryan

carlfordrx

guacodans did you get your key working ??? I got the same key as you and then bought their key programmer and it DID make toe key start my 07 rx400h but the remote programming instructions would not work for me and then I went for the $ 30 tis dongle and software and the tis will not give me the utility choice to tell the immobilizer to accent the new key. Tried several different versions of the software and still no go. the software recognizes the car and gets into the computer but will not let me change anything again no "Utility" choice, If you get this far let me know and maybe someone else can point us in the right direction. Thanks for listening, Carl

LORAN

The instructions on the right need to be done first. This will get the key to start the car only. The instructions on the left are to be done second, this will program the lock, unlock, and trunk functions. Study the instructions for a few minutes before starting or have someone read them to you, the sequence has to be done within a certain amount of time. The programmer will only program up to three keys for one car. I ended up with 5 keys and only 3 are programmed but I have extras if I loose one.

carlfordrx

guacodans, I finally received a dongle from an ebay seller that got my rx400h to recognize the remote. It also does most if not all of the LPS that you would want to change. As I said before the cheaper ones would not work for me but the VCX nano did. It also does make the vehicle recognize the key itself so I hope this helps you. DRL can be turned off as I see a lot of people looking to do that.

djgrubber

Hi All,

I have just bought Lexus RX300 (model from 2005 with a 3 litre engine). I am based in Scotland so it is RHD car.

I have only one Valet Key ( Grey) , it has three buttons. All of them work perfectly as well as the car. I called my Lexus dealer to get an additional key and to my surprise they told me that they can't do anything because I don't have a Master Key (black key). On the UK Lexus Forum I read about the Toyota Lexus Smart Key Maker. In theory it should enable the enrollment mode in the immobiliser which should let me add a new key. The problem is that it may stay in that mode. Someone claimed that it will come back to normal after having two keys programmed.

I also heard that this key maker erases all keys stored in Lexus memory apart from the key that is in the ignition. Is it true??

I intend to buy new keys from the locksmith or Lexus. But I need to know how this Toyota Smart Key Maker works and whether there is no risk to erase my only key from the system. I don't want to be left without any key!

I read the forum many times and everyone says something different. Is there anyone out there who can sensible describe the procedure and tell me whether it worked?

Starting on a different track, perhaps there is some scanner or software which could be used to add new keys? CarlFordrX you mentioned VCX Nano, did you find specific for Lexus? Is it the one: http://www.vxdiagshop.com/wholesale/...i-version.html I would be very grateful if you could clarify how you used it and whether you had the Master Key or Valet Key only?

Many thanks for all ideas in advance

djgrubber

Hi Guys, I spoke with some specialist in my home country and they told me that there is a possibility to clone my Valet Key - in other words they would read data from the key and put them on a brand new key. This way it would be possible to avoid the programming of the immobiliser. They looked it up and it seems that it should be doable for Lexus RX models 1999-2003 and 2004-2006. Has anyone investigated this?

It could potentially solve the problem.

simplyfred

Hi i'm new to this forum and only had my 2007 RX400h for about 2 weeks, also new to Lexus, and i'm based in the England, United Kingdom.

When i bought the car i was given 2 keys, but found that only 1 worked the remote and ignition but both fitted in the locks, and the dealer told me that it just needed programming.

I went to the local Lexus dealership and was told that it would be about 50 pounds UK to program it, so i booked it in and waited for it to be done.
About 15 minutes later i was told it couldn't be done as it wasn't the master key, and it would be over a thousand pound to replace both locks and keys and program them.

I noticed that the key that worked was the grey service key, and the other one was a master key from a Toyota, exactly the same cut with the same type of remote.
I looked through some of this forum's posts an think i've been lied to.

The service key sometimes has trouble turning and tried turning wheel and rattling the key till it worked, but found the master doesn't have the same problem, so i switched the remote assembly in the keys.
So now i have to ask if my new master can be used to program the other key, and are the numbers on the two remotes relevant to transponder coding of the keys, as previous owners lost the tag as well as the two master keys and didn't bother to write the number down either.
Pretty please help me out guys ! ! !

carlfordrx

djgrubber. I used my master key to program the remote portion of a new master key. I had to insert the master key and then insert the new key a couple of times but it said to use the master. I'm pretty sure the valet key has a chip in it as do the masters but the masters have the remote in them also. In view of my using the vcxdiag stuff I don't think it would do a valet into a master as it specifically asks for the master. I did have my keys cut by sending a picture to these guys https://www.ebay.com/usr/1010keys?_t...53.m2749.l2754 and they cut me a new valet and a duplicate master. They also have a programmer that will take care of the chip but I could not get their instructions to make the remote get accepted by the ecu so that's when I bought the vcx thing and got the ecu to accept the new remote portion of the master keys. Don't think this is the answers you guys are looking for but I hope it helps. I did email the 1010keys guys and the did answer my emails back within a day or two so you might be able to ask them specifically if they can configure you a key that will do what you need. Good luck as I know it can be frustrating. Carl

djgrubber

Thank you for a reply.

My Valet Key has a remote with 3 buttons working. But it is a valet key for sure. When I insert it into the car the security light stays on for 3-5 seconds before it disappears which means it is a Valet Key. It does not lock/open the glove box either.

Please correct me if I am wrong, but this Ebay seller cuts the key + is able to program the chip so that you are able to start the car with that key? Correct?
Am I right in thinking that ​t​​​​​he only issue is the programming of the remote and its buttons. The problem is that your OBD2 scanner asked you for the Master Key so that you could add the replacement key?

A VERY IMPORTANT QUESTION : if you are able to start your car with that key, what happened when you:
1. Lock the car with a remote
2. Open the car with the key (the alarm should turn on and make a sound)
3. Are you able to start the car with that key (with the alarm beeping) ?? ( I read somewhere in my manual that when you start the car with the key, without turning off the alarm with the remote, the sound will stop anyway after 20 seconds - I want to check whether this actually works).

Could you confirm which VCX diagnostic tool did you buy?
Is my thinking correct that the VCX diagnostic tool asked you specifically for a Master Key during your programming procedure when you plugged via OBD2 into the car?

djgrubber

I am in the similar boat mate! I have only Valet Key. You won't be able to create a Master Key from your Valet Key. Swapping chips/ key casings won't help. Master is a Master and Valet is a Valet.

Ignore Lexus it is a rip-off !. At least for now. I was told by a specialist in Glasgow that they can create a fully working key from my Valet Key with buttons working for £300. It is a bit pricey for one key. At first I need to address this issue with my dealer because he should have given me two keys in the first place!

I made a few phone calls to Poland and I spoke with 4 different locksmith experts who deal with all kind of cars. All of them told me that they can clone the key and that they would give me the procedure to active remote controls without even seeing the car. Basically they create another Valet Key with buttons working - the same which I have now so the car should recognize it. They don't need the car for it. But this is only possible for models 1999-2006. For models 2007 they need to plug in to the car and do the programming to add a new key/remote.

In your case I would be asking local locksmiths to create a separate key from you Valet Key. You will have two Valet Keys with remotes, but it is better than nothing.

I will investigate all options within the next two months. I should go on holiday to Cracow soon and let you know how it went.

simplyfred

Thank you for answering my question,
The key i have is the grey service key, which works in the ignition, and the remote unlocks, turns off the immobiliser and works the rear door also.
The spare key i was given was a Toyota master key that fits the locks, but the chip isn't recognised and the remote isn't either.
The only difference i could tell was that the master key is rebated along the outside edges so that it will fit in the glove box lock, and the service key is not rebated on the 4 outside edges, stopping it from going into glove box lock.
The service key fits other cylinders and obviously has a chip and remote, but tended to catch in the ignition cylinder, but as the remote mechanism is removable, i just swapped them over.
This solved the master key problem for me and it now works in all locks and is smoother in the ignition cylinder solving that problem too.
But now my service key opens all locks but has no working chip so can't start up with it.

The remote module when removed has numbers on top and bottom, the top one is the same on both keys, was wondering if the bottom number was the same as the tag supplied with the keys originally. and is relevant to the chip, and top number for the key.

If anyone has full set of keys and the tag, could they let me know if their remote numbers are the same, and if the service key numbers are different.
Also someone mentioned that the service key could be cloned. ? ? ?

djgrubber

simplyfred, I won't be able to help with the tags, since I have only one key and one tag.

Just one thing to note, if you moved a chip from your Valet Key to the casing of you Toyota Master Key , your car still thinks that you are using the Lexus VALET Key. The only improvement is that you are using a different key tip which is shorter , therefore your glovebox can be closed/opened and it works smoother. Do a simple test. Put your Master Key into your ignition (do not start or move it) and look at the security light. If the light is visible for about 3-5 seconds after you placed the key in the ignition, your key is still a VALET key (no matter in what casing it is and which key tip you are using). However, if the light disappears immediately when you put the key in the ignition you have a Master Key - I am not sure how it would be possible though...

The point I am trying to make is that you have only one option: find someone to clone your VALET Key Chip. You won't create a Master out of a Valet. However in your case the Valet Key Tip does not work very smoothly so in theory you could copy the pattern of your Master Key tip (since you have it, I don't have mine at all) , clone Valet Key Chip, put it all together into a new casing and it should work. So you will end up with two keys:

One Valet Key with Valet Chip Inside (Lexus original)
One Key with Valet Chip cloned but in the casing and tip of your Toyota Master Key.

In this case you still don't have a proper Master Key with the Master Chip though...your car would treat both chips as Valet Keys

By the way, Lexus could not program the key since you do not have the Master Chip. They won't create a new Master Chip for you without charging you £1k