brainsurge

Hi,
i have some trouble with my master key. 2 Month ago my master key broke due to a lot of play in the unit. So i started searching for a new one. I checked out aliexpress and found 2 different design key fobs.
I tried this Design, to found out that it does not work at all. with the transponder installed in the key fob, i can not even unlock the car, it seems to block the signal in a way, that the car recognizes that something is sending and is reacting to the sent code (blinks and the door locks move), but does not unlock. Also it is not possible to start the car.
If i take my key and hold the transponder next to the key hole, the car starts flawless. so the transponder is working. Also my valet key is working fine.
Today i received this key, and guess what....unlock and lock works fine, however in my opinion, the distance between transponder in the key and the corresponding antenna is too far.

However, is there a way i can get around this without loosing the immobilizer?

Also, i found these keydiy keys at aliexpress and find them quite interesting. Also it says that they are compatible. Now, if i program the key to the car, does it also register the immobilizer in these steps?
All links are only for example and to illustrate my problem.

clintdaddy

Not sure but here is a link that may help you!!

https://www.clublexus.com/forums/gs-...400-430-a.html

brainsurge

The programming is not my issue.
My problem is, that apparently with aftermarket key cases, the transponder for the immobilizer seems to be to weak or the distance between antenna ring and key transponder too far. or am i having a different problem here?
if i have the blade only in the key hole, and hold the transponder next to it, it starts right away. now if i move these 2 parts in one of both aftermarket cases i bought, it does not start, in one case the key case even alters the signal that the car does not recognize the unlock-pattern as what it is.

Problem 2 is, does anyone have experience with "keydiy"? these are free programable keys that you can turn into keys for cars of all different brands, also toyota and lexus. and you can even program these with your phone and an android app. however, does the programming include remote functionality and transponder for immobilizer as well?

TW99GS300

If you're on facebook there's a guy selling these keys, comes with remote, transponder and can cut for you too.

TW99GS300

There's usually a slot in the flip section for you to put the transponder.




You would need to remove the transponder out of your remote and glue it on so it won't rattle off.

Tuanville

i have this key key and it works great! Only thing is that the trunk unlock doesn't work.

brainsurge

This is exactly the key i have here from keydiy, and i programmed it already. So the remote section is working, also opens the trunk. so all i have to do now is to get the transponder working.
Does anyone know which chip is required for the 2gs? however, in europe we use 433 mhz frequencies...
Key Fob Replacement

brainsurge

Ok, so i took my key apart, and that was super easy. car starts right away, put the transponder over in the other key and now all problems are solved