Programming new keys?

[jlhollowx13]

Hello all, I am in need of some insight on getting new keys and techstream. I just had my local ace order in some keys which they just tried to program to no avail. I tried calling lexus dealers to see if they could tell me how many keys are programmed to my vehicle as I know there is a limit. They said they need the vehicle on site to plug into it to tell me that information. Unfortunately they are about 2 to 3 or more hours away.

My question is, can I do everything myself if I invest in techstream? (Program new keys, delete old keys, etc?) I only have 1 key so would really like to not brick it or lose it. I also have come across some threads of people buying MUCH cheaper keys online than my local ace or dealer quotes me at, so it has me thinking I could spend that extra money and get techstream instead of the expensive keys if the cheaper ones work. I am just not sure on my best option here and would like some help from some folks who know what is going on more than I do.

Vehicle is a 2001 lx470

Thanks everyone!

 

[97 AZ LC]

Tell us what model and year that you have.

 

[jlhollowx13]

Tell us what model and year that you have.

Whoops, sorry! Its a 2001 lx470. Will add to my first post too

 

[jlhollowx13]

Ok, so I think I found my answer in that yes, techstream should be able to do everything I need for this project. Now I am running into a new issue on which keys I need. From my research I found it should be a 4c chip with fcc id HYQ1512V, but my current key has a back plate that shows ffc id NI412BBB. My fcc id is coming up as an ls430. Which one will work? Or will both work? I know the backplate of the key can be changed so I don't know how much I trust it.

 

[flintknapper]

There is a procedure that will delete all former 'stored' keys except for the Master being used to accomplish that. Then you just add the 'new' keys per the instructions for that. I didn't use techstream when I did mine a few years ago....though that might make it easier.

 

[Malleus]

You can try this thread:
Key thread...

or just ask @Mauser - he's the key master

 

[BnvS]

You can try this thread:
Key thread...

or just ask @Mauser - he's the key master

That thread was almost useless. Since it was about the OP losing the master key and end result was ECU swap. (btw I did go through all the pages of it)

@jlhollowx13 Do you have the master key? I am trying to figure out your simple question. Is your questions -

You have a master key and just want another master key?
or you do not have a master key but have a vallet key and need to get yourself a master key?
Also other obvious questions.. can u start your car now and drive it?

Thanks

 

[Mauser]

If the one key you have is a master you are good to go with Techstream. Your key needs to have a 4c chip to program it. HYQ1512v is the freq for the remote

 

[jlhollowx13]

That thread was almost useless. Since it was about the OP losing the master key and end result was ECU swap. (btw I did go through all the pages of it)

@jlhollowx13 Do you have the master key? I am trying to figure out your simple question. Is your questions -

You have a master key and just want another master key?
or you do not have a master key but have a vallet key and need to get yourself a master key?
Also other obvious questions.. can u start your car now and drive it?

Thanks

If the one key you have is a master you are good to go with Techstream. Your key needs to have a 4c chip to program it. HYQ1512v is the freq for the remote

Thanks for the reply guys. I actually am not sure if my key is a valet or master. I hope its a master! It unlocks the glove box but could have been cut as the master but programmed as a valet, that I don't know yet but assume ill find out when I connect techstream once my cable arrives. I can start and drive it with the current key. I am hoping I have a master and want to program another master or 2.

thanks for the info @Mauser. That is what i was looking for. Wierd thing is my current key has different fcc id than the one you mentioned so not sure what is up with that but the keys are pretty inexpensive on ebay compared to ace or the dealer so its worth a shot.

Again I appreciate you guys!

 

[jlhollowx13]

If the one key you have is a master you are good to go with Techstream. Your key needs to have a 4c chip to program it. HYQ1512v is the freq for the remote

Question, if the key i happen to have is not a master, I am assuming I am sol and will need a new ecu? I really hope its a master! Also will techstream tell me if its a master or a valet key or will I just have to try to program the new key and if it doesn't work it means I have a valet key? Again, all your help is very much appreciated. I also hear you sell Virgin ecu's if I happen to need one?

 

[flintknapper]

Question, if the key i happen to have is not a master, I am assuming I am sol and will need a new ecu? I really hope its a master! Also will techstream tell me if its a master or a valet key or will I just have to try to program the new key and if it doesn't work it means I have a valet key? Again, all your help is very much appreciated. I also hear you sell Virgin ecu's if I happen to need one?

Unless damaged....you would not need a 'new' ECU just 'reflash' your present one. BUT....before fretting about that just insert the key you have and note the reaction of the security light.

(a) Security light continues to blink = unrecognized key.
(b) Security light goes off IMMEDIATELY = MASTER key
(c) Security light remains illuminated for 1-3 seconds before going out = VALET key

If yours is a Master, then follow the procedure to delete/erase all others (the Master being used to do this will be retained) then add a couple of spares.

 

[jlhollowx13]

Unless damaged....you would not need a 'new' ECU just 'reflash' your present one. BUT....before fretting about that just insert the key you have and note the reaction of the security light.

(a) Security light continues to blink = unrecognized key.
(b) Security light goes off IMMEDIATELY = MASTER key
(c) Security light remains illuminated for 1-3 seconds before going out = VALET key

If yours is a Master, then follow the procedure to delete/erase all others (the Master being used to do this will be retained) then add a couple of spares.

Thanks for this information. Looks like I might be screwed. When I insert the key that is cut but not programmed the light flashes, when I insert the key I use to start and drive with the light comes on and goes out after about 2 seconds. So it looks like I have a valet key. Great!

Now I assume techstream won't be of much use to me after all. My understanding is I can't program a new master with only a valet key. So it looks like I'm back to square one.

Can I reflash my ecu on techstream? This just keeps getting more and more complicated. Don't even want to drive this thing until I have a spare key either as I know a tow bill to the nearest dealer, which is hours away, will be hefty, plus the work they would need to do to get a master programmed.

 

[Mauser]

Not really screwed. You have a couple of options. Techstream won't work to flash your ecu. You can either have your ecu flashed, or just have your valet cloned.

 

[flintknapper]

Not really screwed. You have a couple of options. Techstream won't work to flash your ecu. You can either have your ecu flashed, or just have your valet cloned.

Or third option would be to zip tie his transponder behind the dash (close to the key tumbler) and have spare key blanks cut.

Personally, I'd just bite the bullet...have the ECU re-flashed and 3 Masters made. I have a key for our LX, my Wife has a key and I keep one hidden on the vehicle.

 

[jlhollowx13]

Not really screwed. You have a couple of options. Techstream won't work to flash your ecu. You can either have your ecu flashed, or just have your valet cloned.

I have read about flashing the ecu, but haven't heard of cloning the valet. I'd like to have it set up so I can add and remove keys when needed in techstream so a flash would probably be the way I need to go. The trouble will be finding a locksmith that can do it that isn't an hour or more away (my town is small and I doubt there is anyone here who can do it). I suppose I'll call the nearest Toyota dealer and see if they can do it and for how much. @Mauser, are you still selling the kit to virginize the ecu?

 

[DanInDenver]

I just used these instructions in the first post for my new fob. I had already programmed it to start but needed the door lock programming.

Programming LX470 Key Fob

I recently purchased a 2002 LX 470. It only had one master and one valet key, so I figured it would be a good idea to get some spares. Local locksmiths quoted $160 to cut/program a key. I didn't like that price. Then I saw a post by @katit for photo-cut keys on ebay. It was $35 and they fit...

forum.ih8mud.com

My fob is a BBT-4C

 

[jlhollowx13]

I just used these instructions in the first post for my new fob. I had already programmed it to start but needed the door lock programming.

Programming LX470 Key Fob

I recently purchased a 2002 LX 470. It only had one master and one valet key, so I figured it would be a good idea to get some spares. Local locksmiths quoted $160 to cut/program a key. I didn't like that price. Then I saw a post by @katit for photo-cut keys on ebay. It was $35 and they fit...

forum.ih8mud.com

My fob is a BBT-4C

Thanks, ill need that at some point fo

I found a local locksmith that says he can reflash my ecu. Unfortunately I am out of town for work so I won't be able to meet him personally so hopefully my wife can handle it haha. They are scheduled to meet tomorrow so hopefully I will get some good news. After that I will try to program a key of my own for good measure. I will report back on what happens.

 

[flintknapper]

Thanks, ill need that at some point fo

I found a local locksmith that says he can reflash my ecu. Unfortunately I am out of town for work so I won't be able to meet him personally so hopefully my wife can handle it haha. They are scheduled to meet tomorrow so hopefully I will get some good news. After that I will try to program a key of my own for good measure. I will report back on what happens.

ECU is fairly easy to access. Re-flash shouldn't pose any problem for a competent LockSmith.

 

[jlhollowx13]

ECU is fairly easy to access. Re-flash shouldn't pose any problem for a competent LockSmith.

Thanks, that gives me some confidence. Hopefully I contacted the right locksmith! I will know tomorrow.

 

[jlhollowx13]

Got my keys programmed! Huge relief! For some reason he wasn't able to program the key I had been using, so ill try that on my own when I get home in a few days from work. Also he didn't get the fob programmed so ill also try that when I'm back. Just glad I have 2 working masters instead of 1 valet! Woohoo!