Thanks to all for your replies ,I thought this might be how the car is set up but this unlocking problem is intermittent and getting more frequent.Have put new battery on the car and new battery in key fob

Hi I have a 2005 RR L322 And when unlocking with key fob only the front doors unlock, rear doors boot and fuel flap remain closed. if you press the central locking button and the boot release buttons enough times it will unlock.Really embarrassing when friends are trying to get in. REALLY REALLY...