2007 Volkswagen Passat Q&A

2007 Volkswagen Passat Question: my remote key it dose not work even after i ve replaced a new battery?

my second remot key it's only able to turn engin on but it dosen't unlock or lock the car i ve thought it might be a battery problem,i ve replaced a new one but the problem still going on -
Answer 1
Might be defective , or need reprogrammed. -