Purchased the above vehicle new. One keyfob is constantly losing batteries ( some within 2 weeks). The other keyfob left in my top dresser drawer for a year still works. 1.) Started car with keyfob and ran for twenty minutes. After shutting off, car would not start again. Code read: 'Keyfob not detected'. This issue has been ongoing since new. Is there any possibility the batteries or battery type could be the cause? Checked the contacts and raceway circuitry on the circuit board and cannot find anything. The win module or rf antennas cannot be the cause for the other Keyfob operates fine; the one which is kept as a spare. Any and all responses to the aforesaid are very much appreciated.