I purchased a 2009 Santa Fe Limited from a used car lot. Upon purchase, they did not have a key fob for the vehicle. A few months ago, we had locked the vehicle, then went to unlock and the key would not go into the door lock. We then had to call a locksmith to unlock the vehicle. Now, we cannot lock the vehicle due to not being able to get the key into the lock all the way. Anyone know what the problem might be?