4Runner Computer question (limited vs trail)

[claytorr]

Our previous vehicle was an FJ Cruiser and I purchased it without ATRAC. After I bought the car I installed an ATRAC button an tada I had ATRAC. As someone who works in software this makes sense to me as having one computer is simpler for testing and fixing issues (plus 99% of people would never do this). I was wondering if there are separate computers and wiring harnesses for the Limited and Trail edition? If not I may try to add crawl control to my limited

 

[marlin driver]

Our previous vehicle was an FJ Cruiser and I purchased it without ATRAC. After I bought the car I installed an ATRAC button an tada I had ATRAC. As someone who works in software this makes sense to me as having one computer is simpler for testing and fixing issues (plus 99% of people would never do this). I was wondering if there are separate computers and wiring harnesses for the Limited and Trail edition? If not I may try to add crawl control to my limited

Not sure, but if it works, I'll be shopping for a turbocharger button.

 

[harper7]

Our previous vehicle was an FJ Cruiser and I purchased it without ATRAC. After I bought the car I installed an ATRAC button an tada I had ATRAC. As someone who works in software this makes sense to me as having one computer is simpler for testing and fixing issues (plus 99% of people would never do this). I was wondering if there are separate computers and wiring harnesses for the Limited and Trail edition? If not I may try to add crawl control to my limited

All 3 models of 5th Gen's have a switch for ATRAC but ATRAC but can be only used in 4 Low of course. They also have another switch that you can turn VSC and Trac off.Pretty sure the 4 wheel drive ECU's are different though.

What year was your FJ? Must have been an earlier one as I believe all 2010 and up FJ's have ATRAC switch stock from the factory now also.