thank you yeka, i am not trying to implant anything, i am just looking to read the chip key code and clone it to another key.
the key itself doesnt seem to have a battery, it is not a keyfob, just a key that gets read via keyring at the ignition.
Some of those keys just use specific resistors in the key. Others use different chips. Most automotive keys are specialised and not capable of being cloned with a Proxmark3.
Automotive key programmers are available for locksmiths but are significantly more expensive. It would be cheaper to just get one key made.