hello. im new to this landrover zone so be patiant. i have a 2000 range rover vogue 4.6. i went to open doors with remote key fob the doors would not open. when i checked the remote the small light was not showing so i changed the batteries. the light still does not show on key fob. i have managed to get into car but there is no ignition no int lights no side or headlights every is dead can anyone help please denny