W210 key problem

[hass42]

Hello guys,
I have 2000 w210 this is my personal vehicle, I have NEC key, IR works lock and unlock and starts car.
But the transponder wont work at all, I have looked through all my scan tools and such and cant find a seperate way to program this to vehicle. please help

[parapilot]

swop NEC chip to a second hand working key. no separate programming

[MarkPRP]

Do you mean the RF won't open the vehicle? Transponder? there is no transponder in them?

[hass42]

Yes I'm mean the RF, I'm sorry

[whiskymk]

NEC is defect ,,, u can swap them or repair radio bute with proper tool

[hass42]

Is RF apart of board? Or insert in this NEC key?