Hello everybody. Has anybody come across a total lockout on a Range Rover Sport when the outside temperature reaches 30C? My garage is baffled and Land Rover haven't come across it either. The smart key is not recognised so a manual entry is required. After silencing the alarm the engine will eventually start but the only electric item that works is the sun roof. Whilst driving all the warning lights come on, one by one, and finally the PAS shuts off - pretty dangerous stuff. When the sun goes down everything appears to work again. The system has been interrogated on 2 ocassions after failure but no fault has been recorded. This is a very worrying problem so any help would be gratefully received.