With REAR locker, is ATRAC still active on FRONT axle? - Toyota 4Runner Forum

Thai · 09-10-2019, 12:26 PM

As title stated, when in 4-LO and with rear locker activated, is the front axle (IFS) completely OPEN (no traction control intervention at all) or is ATRAC active?

Thanks in advance.

mteolus · 09-10-2019, 12:35 PM

The answer is both. If A-Trac is off then no there is no traction control and if it is on then yes.

Mutant138 · 09-10-2019, 12:42 PM

Quote:

Originally Posted by Thai

As title stated, when in 4-LO and with rear locker activated, is the front axle (IFS) completely OPEN (no traction control intervention at all) or is ATRAC active?

Thanks in advance.

Pretty positive it's active. If not I've been putting a lot of faith in my dash lights and coming out on top either way.

Mass 4runner · 09-10-2019, 12:56 PM

I believe it is. I did some off roading this past weekend and got temporarily stuck way out in a pretty gnarly trail in Maine. With locker on and ATRAC on it felt like it was indeed working on the front. On a related note, I was very impressed by the capabilities of a stock truck with A/S tires (Michelin). Toyota has thought out it's off road systems very well.

mteolus · 09-10-2019, 01:09 PM

I was just out at an off-road park Sunday. With my locker engaged the traction control light said off. I never used the A-Trac but I am pretty sure once you push the button it is on. I would assume the traction control off light would then go off. I'll have to test.

But their have been topics here and I think even a YouTube video showing results when just using locker and when using both locker and A-Trac.