Time wasn’t on my side over the weekend, so annoyingly very little progress was made.
I planned to order a couple of these heater control relays at the same time as booking a service. (I had to call three Toyota dealers before I was finally offered routine servicing, it was well worth persevering through as the price I was quoted was half that of Lexus.)
Discussion of the relay somewhat flummoxed the girl on the service desk, and whilst they promised to look into the part in question and call back with part number and cost I struggle to remain optimistic – I think they will need to be quoted a specific part number, or I need to contact the Lexus dealer.
Steve2006,
The driver and passenger seat each have their own relay, located directly under each seat. I can hear the contacts make and break on each seat when operating the control on the centre console. It sounds as if the relay may be located towards the front of the seat rather than the back but I may be wrong. Even with the seat raised to its uppermost position there is still very little room to identify anything.
Parts for these cars seem quite scarce when moving away from the main Lexus parts desks, even eBay has little to offer outside the USA – does another resource exist that I am unaware of?
For the approximate cost of £20 per side, I think it’s worth buying a couple of these to swap over and if that then still does not work, I’ll look into obtaining complete seat assemblies to dismantle.
Thanks to everyone for their help so far!