HI yesterday my partner could not find the keys we usually use for the polo so found the spare set . when the remote wouldnt work he used the key to open the door, then tried to start the car and nothing happened. No lights on the dash nothing! we then found our usual set of keys tried the remote which flashes but still will not open the car and when you use the key then try to start the car again nothing happens. Now we replaced the battery on the car about 4 months ago and it was working perfectly before we used the spare key!! Any ideas please help as we are in the middle of the desert in australia and need the car!