hi dave, possible that the resistor switch has stopped working,the fan & the resistor are located under the dash on the passenger side,easy to remove 3 push clips & 1 screw,once you have removed the material cover & disconnected the fan this turn anti- clock wise & pull out, the resistor switch is to the right of the foot well by were the fan was located this may have a singlescrew retaining it or it may just b a push fit itself hope this helps
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