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Old 06-02-2022, 06:35 PM #16
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Quote:
Originally Posted by bryan55zzz View Post
Thanks to everyone that replied. I have one question, do wheels have to lose traction in order for alternating breaking to occur? Because testing system in lawn grass it sounds like it is trying with no wheel spinning. Thanks for your input.

Depends on what system you’re referring to. Crawl control will run ABS no matter what as that is more of a low speed cruise control and so it uses ABS to modulate speed.

A-trac is an entirely different system and does require some wheel spin in order to intervene.


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Old 06-02-2022, 07:54 PM #17
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Crawl Control, Hill-Assist Control, and Downhill Assist Control will almost always activate the ABS; they're designed to keep you going a very slow speed and will modulate the system to maintain that. VsC, ATRAC, and ABS will only kick in when wheel slip and vehicle stability exceeds limits.
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Old 06-03-2022, 02:41 PM #18
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Think I finally understand crawl control. Just do not think I will need to use it. Thanks guys.
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Old 06-04-2022, 06:22 AM #19
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Quote:
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Think I finally understand crawl control. Just do not think I will need to use it. Thanks guys.

Same. I got stuck in some wet sand/mud and it didn’t really do anything except make me sink more. I’ll stick with recovery tracks and a shovel.
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Old 06-04-2022, 10:54 AM #20
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Quote:
Originally Posted by bryan55zzz View Post
2022 4runner with 2100 miles, tried crawl control for the first time after reading manual and watching youtube vids. In grass and loose grave drive. Grinding, expect from left front drive...this can not be normal...grinding, I can not expect this to be normal. Plan to visit my dealer tomorrow for explanation. I have owned many 4x4 and understand the expected normal sounds, grinding means gears are not meshing...result, metal filings.
Working as intended, non warranty item inspection...that'll be $195 inspection charge. Thanks!
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