Hi the drivers door on my new b max will not open but all the other doors will, it is not FROZEN and have had 2 RAC engineers out to look at it they have confirmed it is not, however it has gone back to the garage and the fault is not occurring . Both RAC men have said it could be the central locking solenoid on that particular door playing up however it looks to be an intermittent fault and it is not happening at the garage. Has anyone got any ideas please.