Does this happen with all your keys or just one key?
Well I was given 2 keys when I brought the car, and only one ever worked for remotely locking/unlocking the car. But in the last week my 'regular' key has been playin up and takes a good few minutes to recognise I'm trying to remotely lock the car.... Sometimes it doesnt work at all. But all the time the LED is flashing like a gooden'
It's gettin frustrating.