I read somewhere about an in-line thermostat that is fitted into one of the water pipes to or from the radiator. Might be worth your while to do a search on google or ebay.
Hi. On more than one occasion I have gone to my 2006 reg GV to find one of the sliding doors have been open for some time, once overnight. Obviously the remote has been operated unintentionally while in my pocket.I now have to be very careful about this and wondered if anyone had found a way round it happening. There's nothing in the manual to disable the feature, anyone got any ideas? Love my Voyager. Cheers Rob