To my knowledge, there is NOT a controller in the vehicle. If there would be, there would be some place to adjust the gain etc. I think you need to add one if you want electric trailer brakes. There is no mention of a factory installed one in any literature I have found. This is my third LX 470 and I have never seen any info on any of them about a controller.
I've heard in other posts on this forum that, although there isn't a factory installed trailer electric brake controller, the vehicle is PRE-WIRED for one of these controllers. However, apparently it's really difficult to find the wiring to connect the brake controller as it's hidden somewhere under the steering column/dash. My assumption is that it's pre-wired with the female connector and all one has to do is plug in the male connector from the electric brake controller...
Can someone/anyone out there confirm this and, if possible, provide a photo or details of where the wiring is located?
Thanks!