2005 LC key

[habakkuk007]

Hi Guys,

So after trying various methods unsuccessfully, I finally pulled the trigger on a cable, and setup TechStream using the virtual machine file provided in @getco "TechStream in 5 minutes" thread. After some tinkering, I was able to get everything running (not before figuring out that the software will not run on a fancy HP x360 Spectre, and sourcing a used Thinkpad T440p which is a great machine, btw and still cheaper than $480 x 2 keys from local dealer), and then add a new key which now successfully starts my truck. However, the buttons do nothing. I searched online, and there seems to be plenty of information on how to do it on trucks up to 2004. None of the sequences I tried worked with my 05 or 07 (the second key).

Now, in order to program the buttons, do I use TechStream software or some type of a ritual of opening doors, pressing pedals, etc? Does anyone know how to do it on a 2005 (or 07) (whether techstream or otherwise)? It seems that Toyota transitioned to a different system after 04 as I had seen folks confirming that their 04 took a particular sequence which does not work for me.

I'd appreciate any tips you might have!

 

[habakkuk007]

Do you see what I mean, guys? No one knows the answer to this debacle. At least I have a spare key now that can start the truck, albeit without the convenience of remote entry.

 

[menancyandsam]

You got farther along than I did. For my 2005 LX I bought theses https://www.amazon.com/gp/product/B07D59L1DZ/?tag=ihco-20
Got them cut.
But can not get them to program with the immobilizer. I've used Techstream & the key in/out plus door open/close procedure with no luck.

I know my Techstream works because I was successful in deleting & then programing the original Valet key.

What Chip came with your keys?

For the door programing did you see the FAQ thread someone posted an '05 or '06 step by step.

 

[Mauser]

2005 gx470 and lx470 take the same key and fob. I couldnt find an aftermarket fob to work with the gx. Bought key blank with fob from the dealer and it programmed like it should .

 

[habakkuk007]

My wife has a 2007 GX (same key as LX) and her keys are different from my 2007 LC as far as the metal part is concerned. The plastic housing looks the same. GX key has etches in the inner channel while my LC has it on the outer edges. (cutting her key at my local trusted locksmith ran me $40 while cutting LC key was $4!) I'd imagine it is no different for the 2005s. I bought an OEM uncut key for 2005 and 2007 (physically look identical but different part numbers) from a Toyota dealer who was selling on ebay.

I successfully programmed the immobilizer part, but the remote entry programming fails.

When I use the following procedure:



I get into the programming mode (LC locks the doors), but always rejects the keys.

Please let me know if you have any ideas or suggestions!

 

[Mauser]

I was able to use techstream to program the fobs on my wife's gx. You may already have the max number of fobs programmed and might need to delete them from the ecu .

 

[habakkuk007]

Mauser, do you mean you programmed the remote entry part (not the immobilizer) using TechStream? If so, please tell me how. I could only figure out the immobilizer part.

 

[Mauser]

Yes, that was on a 2005 gx, but it should be the same. I cant remember exactly, but it was an option under I think security, or door locks. If you cant find the option I can hook up to the gx in the morning and figure it out.

 

[habakkuk007]

Mauser, if you can still trace the steps for me, I'd appreciate it!

 

[Mauser]

Sure, I will do it this evening when my wife gets home.

 

[habakkuk007]

Thank you!

 

[Mauser]

 

[habakkuk007]

Thank you for uploading a video - very helpful!

 

[Chris Terrell]

Hi everyone, I have not been able to locate the answer to my question yet so here it is,...

What aftermarket key can I purchase myself and program as a master via Techstream, assuming I have a locksmith cut it for me?

I ordered a “D” chip key from Amazon and was able to program the fob but the ECU won’t acknowledge its chip so I can only get it to lock/unlock doors. I have one master that I am using now but want backups, and want to do the same for my Tundra if I can figure this out with your help. HELP?!?!

 

[Mauser]

Hi everyone, I have not been able to locate the answer to my question yet so here it is,...

What aftermarket key can I purchase myself and program as a master via Techstream, assuming I have a locksmith cut it for me?

I ordered a “D” chip key from Amazon and was able to program the fob but the ECU won’t acknowledge its chip so I can only get it to lock/unlock doors. I have one master that I am using now but want backups, and want to do the same for my Tundra if I can figure this out with your help. HELP?!?!

Are you trying to add a key to a LX470 or a Land Cruiser?

 

[Chris Terrell]

05 LX

 

[Mauser]

05 LX

I cant tell you where to get key blanks, but I can tell you why you cant add the key you bought. The Amazon key blanks come with a 4d68 tp30 transponder tag. This is for Toyota. What you need is a 4d68 tp29 chip. I have told a couple of the sellers on Amazon this, and have even left reviews, but they still sell the keys with incorrect tags.

I havent heard any problems with Toyota keys, just Lexus.

Message me an address and I will send you a key tag that you can swap out.

The keys that are sold on Amazon that do not have the remote part seem to have the correct chip.

 

[menancyandsam]

I can confirm Mauser recommendation. The 4d89 tp29 chip worked for my immobilizer.
Now if I can only get the doors program, any suggestions on this I tried Techstream & the open/shut door 5/6 time sequence & can't get it to program.

 

[Chris Terrell]

Wish I could help with that but I haven't had to explore it since my fob programmed the first time without issue. I read in another forum that other radio-type devices in the immediate area can interfere (phones, other fobs, etc.). Something to consider.