Phil-lars

Hello, i am new to the forum. I tried the search function and came up with nothing but how to resync the key fob which works and will stay synced as long as i dont start the car. Once i start the car and shut it back off the key seems to not be synced anymore. I replaced the battery in the key fob, also while i was in there checked the prongs on the fob to male sure the batteries connection was good. I went to an indi shop near me that quoted me 175$ for a new key but i dont want to spend the money if the same thing will just happen with that fob. Any ideas on what the pronlem may be? I dont have access to a vagcom unless there is some one in my area willing to help me out? Thanks.