I rarely lock the car with the button on the card. I suspect that's "deadlocking''. I did the other night, my wife was last in the car and couldn't remember if she'd locked, so I walked back towards the car and locked it from 40 metres away. I've found the locking and unlocking gets a bit dodgy if the card's battery is low.I found that if you lock the car with the card you can only unlock it with the card. If you lock the car with the switches in the door handles or the switch in the Renault badge on the tail gate you can use either the proximity or the card (if you're to far away for the proximity to work).