second key for 98 LX470

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I do not.

If you can get ahold of it 2002 models are able to have the immobilizer reset onboard using Techstream.

You can have the key you have now duplicated and use Techstream to reset the ecu and register new keys.
 
If you can get ahold of it 2002 models are able to have the immobilizer reset onboard using Techstream.

You can have the key you have now duplicated and use Techstream to reset the ecu and register new keys.
So I can still buy a key and have it cut to match the valet one? But to make it work I will need to go to ebay to get Techstream and then program it?

I assume the techstreams I see on eBay for like $30 will work?
 
So I can still buy a key and have it cut to match the valet one? But to make it work I will need to go to ebay to get Techstream and then program it?

I assume the techstreams I see on eBay for like $30 will work?
Yes, you will need to make sure it has a 4C chip.

There is a great thread in the 100 series section all about Techstream.

Once you have Techstream I can help with a passcode.
 
If all you have is a valet you have 2 choices to get more keys. You can either reset your immobilizer using Techstream, or have your existing key cloned.
 
If all you have is a valet you have 2 choices to get more keys. You can either reset your immobilizer using Techstream, or have your existing key cloned.
I do have a plastic card with a key attached that gives the code. When I put the card next to the ignition and put in the key, the security light goes off immediately. Can this be used as a "master" to program others?
 
I do have a plastic card with a key attached that gives the code. When I put the card next to the ignition and put in the key, the security light goes off immediately. Can this be used as a "master" to program others?
Sure can! That is a master.
 
99 LX470

I have two keys. One is black with the buttons. The other is gray with no buttons. The black key turns the security light off immediately. The gray key turns the light solid for about 1/2 a second then it goes off. I assume the gray one is a valet key which is fine. Is the black one a master then? If so I need to get on this to program a new key since it makes me nervous only having one master. I lose stuff often.
 
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