I looked a LOT at options for this and currently have a Teyes CC3 in my 2007 LX470. Here's a quick summary:
I first installed the GROM VLine. Great little system, very reliable, and basically keeps everything like climate control and backup camera stock. The only issue, and it's a biggun, is that the stock screen sucks for touch control and resolution. The GROM just made me realize what the system could be, but was massively held back by the stock screen. I still have it if you want to buy a used GROM with about a week of usage for cheap.
Then I installed the Teyes. I also built a custom climate control app to replace the s***ty one on the Teyes. Then I installed an aftermarket amp and speakers. I also installed the front and rear cameras and use them for a DVR when driving.
Here's what you need to know:
1) It still doesn't work well on the LC. There's something wrong with the wiring or grounding or stock amp or something that causes an unbearable noise and it's really no closer to being resolved than it was a year ago.
2) It works great on the LX with the stock amp. It also works great on an LX/LC with a replaced AMP (like mine). Be aware that replacing the amp in the LC/LX can cause ground/AC hum and you may need to install the "big three" upgrade or ground loop isolators to get a noise-free system. The ground loop isolators are the "noise reduction part" mentioned above.
3) The climate control app kind of sucked, but there's an open source replacement here:
Looking for a picture of the LX470 climate control screen - https://forum.ih8mud.com/threads/looking-for-a-picture-of-the-lx470-climate-control-screen.1305009/
4) The Teyes comes with a dual SIM slot, but it doesn't support the bands used by TMobile or Google Fi in the US. I'm a Google Fi customer and love their data-only plan. You can get a free tmobile hotspot, chuck the sim it comes with, install a Google Fi sim card, then plug the hotspot into one of the USB ports on the Teyes. Here's the link for the free hotspot:
eSIM_modal - https://www.t-mobile.com/esim-modal.html . When the truck starts up it powers the hotspot, and the Teyes connects to the hotspot either over the USB port (usb-to-ethernet) or via wifi. Your choice.
5) The backup camera is way better than stock. You need to tap the reverse light on the driver's side, but it's easy. The front camera is also an easy install and works well (on the CC3 360 versions)
I also have an OEM screen if you want it from my 2007 LX in gray. I keep planning to sell it on ebay but I get distracted easily. $200 + shipping and it's yours.
