A-trac in 4lo on all 2016 4x4 Models Non Trd Offroad

I was out wheeling the other day, at one point in 4lo. I put the truck into some difficult spots and noticed a symbol flashing that was simular to the trac symbol on the dash, i could hear the tires slipping and brakes working. All 4 wheels would turn even with one in the air. I thought we had open diffs in 4 lo on the non trd offroad models. I see that same symbol on my wifes 2015 trail 4runner when she is in 4lo with a-trac. Thoughts?

 

It's possible Toyota enabled traction control in 4lo for 3rd gens (like it works in 4hi). The system can't generate as much clamping pressure as A-Trac because there's no intake vacuum when you step on the gas.

 

better than nothing i guess, no need for yellow wire mods anymore

 

Interesting... Perhaps that's one reason why there's an electric brake booster on the OR?!


Frank

 

It's the only reason for the electric brake pump on the OR. 2005-2008 OR had the normal vacuum booster, since A-Trac wasn't introduced until 2009.

 

Thank u for posting this . People tell me 4 low is open diff but that is not true, all 4 wheels spin in 4 lo on my 16 sport, not sure if it is atrac or limited slip though?

 

So adding some electronic brake boost would be a good thing?

 

open diff is open diff, putting the truck in 4L doesn't lock anything.

 

Yes. Both A-Trac and crawl control apply torque to the opposite side of the axle by applying brake to the tire that has no traction. This effectively works like a locked differential.

 

Ok, technically your right ,,, but most people throw that term around meaning no assistance from atrac or limited slip. Something is making all four wheels spin in 4 lo ,,, so u tell me

 

So what your saying is you dont know what this is called ( brakes applied to slipping wheels)

 

Can we get a video? Because that would be awesome if true. Four wheel etc is very effective in mud and deep snow.

 

Hmm so traction control is the same as limited slip and atrac ok got it

 

I understand the idea..... I'm just wondering if adding some type of electronic brake booster could be a feasible mod in the future for those of us without an OR.

 

I crossed over a dry creek and my right front wheel and left rear wheel were both in the air at the same time and i thought i was stuck, while being in 4 lo I applied more gas and heard the breaks making noises and I got out of the creek and up the hill. For the technical wizards out there that like to argue terms what is this called? Trac, atrac, auto lsd,or like someone called it earlier traction control?
2016 sport 4x4

 

It's a combination of several Toyota gimmicks, but more commonly known as a-trac

 

Thanks, correction - i went over creek at both angles i forget wich one i heard the breaks kicking in on.

 

I guess I am missing your point. The '16 Taco has electric brake boost as it comes. The application of wheel slip reduction whether in A-Trac or crawl control is "electronic brake boost". This is not a mod any third party vendor would take on as it would involve modification of factory braking system integrity and be a substantial liability risk for anyone involved in such a modification, thus the most sensible path to having these conveniences is to option your truck with them when buying.

PS: I like your avatar