boot lock/central locking

[rumone]

hello all!i have a 54 plate 1.5 dci megane dymanique!it has the keyless start system!of latr the boot lock keeps opening up!it does it nearly everyday now!it is a problem with the cenral locking system or is it the boot lock itself!it was pretty random but now its getting worse and now opens when driving!any idea,s please!