Keyless Remote not working, Transponder working, Car STARTS

[giveitup]

Had a problem with my remote key, wondeirng if anyone can help??!

So my car door opens manually and the car starts, but the remote on the key does not unlock the doors or opens the trunk. I have called the dealership and they asked me to open my doors but the key in and press the button. Still doesn't Work!! The battery is fine and the led flashes when I press the buttons.

Does anyone out here know what the problem might be? Do i need to replace the circuit board ? need it re progrommed. Really trying to avoid the $300 dealership cost for replacing the key, for the convenience.

Would appreciate any help?!