2WD Low Mod?

Has anyone attempted this yet on a 3rd Gen Tundra?

I had it on my 2nd Gen Tacoma and it was very handy for moving my camper around. But, it was a pretty intricate job and I would have never attempted it without detailed wiring diagrams/instructions from TW. That said - I'm not capable of being the first to do it!

And I have to admit that the torque curve of the 5.7 is such that I might not ever need 2-Lo, but I figured I would ask anyway...

 

I've thought about it, but I've never read anything about it being done. I did it on my Tacoma as well, but it had a manual transmission. My motivation was like yours, for trailer moving and the like and to save on the clutch while doing so. I suspect that with the low 4.30 ratio in the final drive of the Tundra, and the fact that they're all automatic transmissions, do it would be kinda moot.

 

I have thought about it but not sure it's needed. I created and put the diagram on TW for the tacoma. I took the switches off the tacoma when I sold it. I have been thinking about it. I may research this truck if I can find a wiring diagram for the 4wd ecu.

 

So I have found a 4wd wiring diagram and it looks like the diagram that I made for the Tacoma will possible work just the same for the Tundra. Looks like the same wires exist on the Tundra just like the Tacoma. The Tundra may even use the same add control and 4wd ecu as the Tacoma. Now I will need to locate the 4wd ecu on the truck. If this is the case you could 2wd low this truck just as easy as the Tacoma. I will do some more research and report back.

 

So I believe that I have the wiring diagram made again for this truck. I just need to find the 4wd ecu and test out my diagram to make sure it works like it did in the Tacoma. I'll keep you guys posted.

 

You're a smarter man than I! But thank you for working on this. I look forward to hearing how this pans out.

 

Both my kids were sick this past weekend so I was unable to work on this. Hopefully this weekend I can find that ecu. I think it's behind the glove box like on the Tacoma but to the side instead of above it.