My 54 Plate (2004) model Renault Scenic is demister only works on speeds 3,4 and 5.I've been advised that its the resitor that controls the speeds which is faulty.Could any one please advise me of where it is situated or any info on what else it could be would also be concidered Thanx.

l doubt it is the resistor bec if it was gone the speed would get is only one speed and you've not be able to adjust the speeds.It sounds like the switch might be faulty or the heater blower control module.