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Old 01-01-2016, 11:35 AM   #81
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Quote:
Originally Posted by civi View Post
I have used the lock-in 4wd twice since i had my 2012 rav. It got me out of snow filled park in situations. Once you hit breaks, or 25mph, it goes to awd, i think. I also used that hill assist on a gravel mountain road in the slick wet muddy condition going down a steep hill. It helped but i think any lower gear will do the same. I also have that other thing which will not let you creep back while on a steep grade when pulling out, never needed it, so no use. Carl
Pretty much the same here. While using the "lock" button is useful on hills in snow, it reverts to front wheel drive once you hit 25MPH. Like Carl, I've only used it twice while towing, both times to prevent tearing up the lawn when pulling uphill out of a wet site.
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Old 01-01-2016, 11:53 AM   #82
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Here is a one page synopsis of Toyo 4 WD

My 2005 "entry level" SR5 4Runner is full time 4 wheel drive V8. It's a badd boy, people ask "did you drive through that?" and I say "no" ... "my 4runner did".
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File Type: pdf Toyota 4wd simplified one page.pdf (50.8 KB, 25 views)
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Old 01-01-2016, 02:39 PM   #83
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Originally Posted by civi View Post
I have used the lock-in 4wd twice since i had my 2012 rav. It got me out of snow filled park in situations. Once you hit breaks, or 25mph, it goes to awd, i think
Yes, that's what the manual section that I quoted says - brake or hit 25 mph (40 km/h) and it reverts to normal operation, which means driving the rear wheels just as much as it determines is required.

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Originally Posted by Vermilye View Post
While using the "lock" button is useful on hills in snow, it reverts to front wheel drive once you hit 25MPH.
Or rather, reverts to front-priority all wheel drive.

Quote:
Originally Posted by Vermilye View Post
Like Carl, I've only used it twice while towing, both times to prevent tearing up the lawn when pulling uphill out of a wet site.
This makes sense to me, as it ensures that all wheels are driving from the start, rather than risking the front tires spinning a bit before the system recognizes that and engages the clutch to drive the rears as well.
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Old 01-01-2016, 02:49 PM   #84
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Here is a one page synopsis of Toyo 4 WD
That's pretty good, with only a couple of minor issues in accuracy or clarity, but it is a decade old. The last system described for the Sienna and Highlander (which was also used by the early RAV4, although it doesn't say that) has not been used in the Sienna since about 2007 or in the Highlander in the latest generation or two.
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