What you need to replace is the Fan Amplifier, it is like the fan resistor, but it's not the same thing. I replaced mine in my VS last year, for $150 for the part only. I would imagine it is the same part for the VR.
The Fan amplifier is located under the windscreen wipers, under that plastic cover there is a little oval shaped cover, undo that, and its connected in there, has a massive heatsink attached to it.