Can anyone help I have a problem with the key. I just went for a qiuck blast and on returning home got out of car and went to lock but nothing happened. Tried pressing lock on key nothing, went and got spare key adoesnt work either. On trying to start car up I had to insert key into port and started ok but still cannot lock car with key. I doubt it is the batteries as car only 6 weeks old and happens on both keys. Any ideas?