I completed the VSC-off mod on my T4R. The cool thing about this mod is the ATRAC is still active.

A great thank-you to Andries at T120. This is his hard work not mine.

What it's like after the mod is complete:

In 4HI it works as advertised You have an unlocked Torsen center diff and no interference from the VSC; the VSC and Diff Lock light are on. You can definitely feel/hear ATRAC doing it's thing. The same deal in 4LO... I can lock and unlock the diff while in 4HI (or 4LO) with my switch on. It locks & unlocks ok. When unlocked the diff lock light continues to flash even after the diff unlocks. It is not a perfect mod. It beats the heck out what Toyota gave from the factory. I am thrilled!


To use the mod in 4wd select 4wd and wait for it to complete the mode change then flip the switch, that's it

To use 2wd VSC off is strictly a procedural variation of the existing mod.
The following in conjunction with the mod gets you 2wd w/ATRAC and no VSC:

- Select 4hi and allow it to engage.
- Select VSC off via the installed switch
- Select 2wd. Feel for the telltale 'normal' light thump as it reverts to 2wd. You are now in 2wd w/no VSC and fully functional ATRAC.

NOTE:- Both 4wd indicator lights will flash, the VSC off light will be steady. I drove like this and did the cycle many times with no ill effects. I did two, full 360+ donuts too

I will also add there's no audible evidence that in it's "state of confusion" it attemping to do any mode changes. If you listen carefully you can hear relays clicking under the glovebox when the 4WD is attempting to change modes. When driving in 2wd or 4wd with the added VSC off switch in use I hear no clicking.

- Before shutdown or reselecting 4wd shut the VSC off switch to off (ungrounded position).


Andries saved me thousands! I was having serious 'VSC-off' envy of the 2008 guys!

This is the original Andries, aka Bulldog, thread: http://www.toyota120.com/forum/showthread.php?t=3817

For further discussion of what the mod will do and why you may or may not want it read here:http://www.toyota-4runner.org/showth...595#post361595


Below are some ‘how-to’ pics and instructions:









Take care and make sure the wire doesn't contact the very warm heater core coolant piping.

 

You can't see it but I put a couple of connectors on the switch wires also so that I can take the dash apart later without pulling and/or cutting wires.