Originally Posted by
Padgett
Well sorta. I do not think the circuit board receives anything. It just sends a coded signal to the car. If the car has been taught to accept the fob it will respond. (lock/unlock/panic). It requires a battery.
The RFID chip is different. It must be taught a signal that the SKREEM will accept (programmed). Once this is done then whenever the RFID is strobed by the right power form it will respond with the code. An RFID chip has no intelligence, it just plays back what it has been programmed. It draws power from the field and does not have a battery.
Now once I have a few things (like a key cut) I will try downloading a functional RFID chip and use that to program a new chip then will see if that can create a valet key (85% sure will work).
A separate test will be to build a circuit board system, verify that it is able to transmit, and try to synch.
Once I have all thee elements working, will see if I can use a $7 shell to create a new fob.
Once that is done and I have recorded the waveforms involved then I will look into the SKREEM module itself.
The key code is a rolling code so the circuit board has to pick up the new code.
If you can make a key that will start the car with a cloned chip I would say that I personally would be content with that should I lose my fobs for some reason.
I have opened car doors with a key for years and see it as no real problem if it saved me buying a fob for $600 or so.
I do not have to walk yards away from my car and then hear the beep, I am sure that many did this when the remote locking came out just to impress the onlookers and still do it for some odd reason. I could simply use a key that many people do not realize they have in the later models. It took an emergency with my wife’s car to find it did indeed have a hidden key in the fob. The Hyundai’s Owners Manual is intimidating as it is about the size of the Moby Dick book, so I read sections only when needed.