throttle mapping 4lo

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Jan 1, 2005
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West of Seattle, not West Seattle
? is the throttle mapped differently in 4hi to 4lo? My throttle response feels much slower in 4lo. I just put on my 33' and was thinking about just hitting some basic hill to get used to ATRAC, I shifted to 4lo and thought the throttle felt almost like a limp mode in comparison.
 
You are correct. Max power is still available but the response of the pedal is ‘deadened’. I can only assume the goal was to prevent surging and lurching. In low range it’s kind of assumed you’re doing slow and gentle things I guess.
 
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I think once you get used to driving in 4Lo, this perception will dissipate.

Obviously everything feels dramatically different in those lower gears no matter what you do, so to me its more a matter of familiarity.

Re throttle and brakes in tippy, iffy situations-- IMHO, few things are worse (and even dangerous) than a touchy throttle, or touchy brakes when in extreme off-road situations, so I would not want a super sensitive throttle in that regard.

Last year we had a couple drivers who could have easily flipped backward in Moab on a particular obstacle if their throttle had been any more sensitive one particular moment as their front end hung upward in the air (Hell's Gate). That's also the reason I do not complain about higher brake-pedal foot-pressure...since over-braking can be the difference between teetering on two tires or rolling over. But we're all different...and if you don't like the throttle, maybe consider a pedal commander where you can create a custom level of sensitivity to switch to when in 4Lo.
 
Thanks, that is what I suspect would be the reasoning from Toyota. There are other things that bug me more, like stopped in neutral to shift to 4lo. That 4lo isn't a lever etc but this as the others I can live with. I already like it more with the 285 70 17s and the RWs.

Markuson, thanks again for the ring bolts.
 
Thanks, that is what I suspect would be the reasoning from Toyota. There are other things that bug me more, like stopped in neutral to shift to 4lo. That 4lo isn't a lever etc but this as the others I can live with. I already like it more with the 285 70 17s and the RWs.

Markuson, thanks again for the ring bolts.

Oh! You’re welcome. :)
-I have completely lost track of the people I’ve sent extra bolts to... :cheers:
 
Yes.... In my 2013 you need to select the terrain/mode in 4 Lo for a programmed change to the throttle response. An example, I was on deep sand roads the other day and in 4wd High I could spin the tires very easily. In 4 Lo, Mud and Sand mode, the throttle is very muted. In sand, the slowed throttle response helps you to take off without spinning the tires which is desirable .

This seems most noticeable to me in challenging soft/deep sand conditions. 4wd Hi may bury the tires since it's challenging to control the throttle with your foot to the extent that a computer can. I have noticed that 4 Lo in sand mode greatly helps to get the LC moving without spinning. This seems to be even better in crawl control mode.

My experience for sand has been that if you want to go fast 4wd high with the center diff locked. If the sand is deep or you are traveling slow 4 low in sand mode and if you are in a really challenging spot, put it in crawl control and let the control system take over, it seems to be much smoother than I can do with direct throttle control.

It's surprising that Toyota doesn't put out more documentation about how the change in mode impacts the driveability of the LC - or maybe I just haven't found that. With a little understanding of the design, it would be much easier to pick what to use based on conditions. Apparently they just determined that the end user needs simplicity?

I also have one of the most advanced motorcycles in the market - it has modes also.... throttle response and power changes (drops 50hp in rain mode) but there is little to no documentation to understand the details of the system. Who do they think are buying these things!?
 
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