Crawl Control Question - Lurching at Lowest Speed Setting

Dryfly24 · Sep 18, 2019

bigwill837[OP] initial post: ↑

Hey guys! I finally installed my sliders and skids, and took my 2019 DCSB OR Automatic out yesterday to put the truck through its paces. I wanted to test out all of the various features of the 4WD system, including Crawl Control.

As many others have noticed, the Crawl Control system on the slowest setting lurches a lot. The system abruptly applies the brakes then throttle while "crawling." As you adjust to a slightly faster setting, the speed smooths out. I was using the CC on some fairly aggressive terrain, both uphill and downhill. Is the lurching on the slowest setting normal?

Under what scenario would you use the slowest speed setting of Crawl Control? Does the slowest setting perform better with extremely aggressive terrain?

Here is the terrain I was wheelin' on for reference. It was at least a 30 degree incline/decline in some areas of the trail.

In before:

"Crawl Control is my right foot..."

"Shoulda' got the manual trans..."

"Just adjust the speed setting faster..."

"Crawl Control is a gimmick..."

Click to expand...

It’s very hard to judge these things from pictures but honestly, it looks to me like you need to get into some way tougher terrain than that. I’ve gone up trails tougher than that in two wheel drive. I think the previous poster said it when he mentioned that your CC is probably outrunning itself.

bigwill837 · Sep 18, 2019

Dryfly24 said: ↑

It’s very hard to judge these things from pictures but honestly, it looks to me like you need to get into some way tougher terrain than that. I’ve gone up trails tougher than that in two wheel drive. I think the previous poster said it when he mentioned that your CC is probably outrunning itself.
Click to expand...

Agreed. I am the previous poster. The solution is "add tougher terrain."

bigwill837[OP] said: ↑

Just wanted to give a little more feedback on the lurching issue at low settings.

Yesterday we had some serious thunderstorms in central Texas. I was able to take off early from work and go test the truck during the thunderstorm.

We have a very large and steep hill at our property at the lake. It’s full of loose rock, large boulders, and slick limestone. When it gets wet it’s an even bigger mess. Here is a photo of the “easy” portion of the hill in my Land Cruiser.

I tested the crawl control feature at lowest setting, both up and down the hill, in the rain yesterday. The lurching subsided at the steepest parts of the hill with the lowest amount of traction. Basically, the system would lurch until traction conditions got really low, then the ABS would cycle very quickly and the system would smooth out and continue to crawl. The system is generally smoother going uphill rather than downhill, because the truck is having to consistently apply throttle, not brakes, to keep the truck moving forward uphill against gravity.

Basically, the lowest crawl control setting performs best when traction conditions are worst.

The video below is a good example. The truck is essentially in a controlled slide descent at the 40 second mark. I’m not sure what the setting is, but it’s not lurching at all.

https://youtu.be/HAvn9E_ooXg

Hope this helps!
Click to expand...

bigwill837[OP] said: ↑

Second this. If it's lurching, the terrain isn't extreme enough and you need to increase the speed setting. Basically, the truck has too much traction for the CC to function properly. As the terrain gets more aggressive, and the traction gets worse, the slower speed settings will work very well.

See my post above for more info.
Click to expand...

Dryfly24 · Sep 18, 2019

Stocklocker said: ↑

“Hey bro....let’s grab our trucks and hit some moguls”

I dunno.....
Click to expand...

hiPSI said: ↑

Check out ski bumps.
Click to expand...

I had to look that shit up and I’m still not sure what the hell they're talking about? Steep mounds?

Log in or Sign up

Welcome to Tacoma World!

Crawl Control Question - Lurching at Lowest Speed Setting

#41
Dryfly24 He’s a leprechaun. He tells me to burn things.

#42
bigwill837 [OP] Well-Known Member

#43
Dryfly24 He’s a leprechaun. He tells me to burn things.

Products Discussed in

Log in or Sign up

Useful Searches

Welcome to Tacoma World!

Crawl Control Question - Lurching at Lowest Speed Setting

#41 Dryfly24 He’s a leprechaun. He tells me to burn things.

#42 bigwill837 [OP] Well-Known Member

#43 Dryfly24 He’s a leprechaun. He tells me to burn things.

Products Discussed in Entire Site Forum: 3rd Gen. Tacomas (2016-2023)

#41
Dryfly24 He’s a leprechaun. He tells me to burn things.

#42
bigwill837 [OP] Well-Known Member

#43
Dryfly24 He’s a leprechaun. He tells me to burn things.

Products Discussed in