Damn Truck Got Itself Stuck On Purpose

2010 4x4 DCLB Sport: I have read several threads on the Traction Control System and thought I had it figured out. Wrong. Yesterday I was driving through a freshly harrowed, wet field in 4Hi. With some speed and tire spinning, I should have been able to easily get where I needed to be. Didn't happen. As RPM's came up to +-3500 and the tires spun, the TCS kicked in and cut the throttle, I sank. I had turned the TCS to "AUTO LSD" in 2 Hi and thought this disabled it when in 4 HI. Apparently I was wrong. Do I need to turn it completely off, (hold the button 3 sec) to keep it from fucking with the throttle? I was hoping to have the rear brake LSD thing and 4x4. Is this combo possible? I ended up having to walk a mile to get a tractor. If they would make the Off-Road Version with a long bed, I would buy one tomorrow.

 

I have no relevant input.

But that sucks and I had a very similar situation with my dodge last winter and ended up walking..

 

You have a sport so no locker and no atrac.

This thread should help:
http://www.tacomaworld.com/forum/te...uto-lsd-explained-easy-understand-i-hope.html

This is a summary from the thread:

The list, below itemizes the drive modes... we have nine!

1) 2WD: VSC and TRAC active, engine regulated ('Limited Slip Lite').

2) 2WD: 'AUTO LSD' ('TRAC OFF MODE'). No engine regulation for 'strong' limited slip.

3) 2WD: 'VSC OFF MODE' (TRAC is off for 'open differential').

4) 4WD-Hi: VSC and TRAC active. No engine regulation for 'strong' limited slip.

5) 4WD-Hi: 'VSC OFF MODE' (TRAC is off for 'open differentials').

6) 4WD-Lo: VSC and TRAC are both off in L4 ('open differentials').

7) 4WD-Lo: 'A-TRAC' on gives a 'locker-like, super strong' limited slip, front and rear.

8) 4WD-Lo: Rear Differential Locked and open front differential (A-TRAC off).

9) 4WD-Lo: RR DIFF LOCK + A-TRAC on, 3 MPH limit.

Thanks everyone, and I hope this helps other newbies to understand '09 and '10 Tacomas with TRAC, A-TRAC, AUTO LSD...

 

I read that post. It says "In 4WD, engine output is not regulated." & "
4) 4WD-Hi: VSC and TRAC active. No engine regulation for 'strong' limited slip." What am I missing?

 

TCS="Traction Control System"; my acronym. I should have said TRAC. I was in 4 Hi and the system cut my throttle. What am I missing?

 

It can say it doesn't cut throttle all it wants, fact of the matter is when that is on and you put your foot to the floor your engine does NOT rev which means the throttle is getting limited somewhere. That is a colossal pain in the ass, why is it auto LSD if you need to push a button to turn it on? Op have you done the "atrac" mod? Basically there is a wire you can cut behind the glovebox and it gives you atrac in 4lo, it won't relay to the system that you're in 4lo so you can have Trac in 4lo. It's a yellow wire that goes into the wire harness behind the glovebox. honestly the extra 6 inches of bed space is not enough space to not get and have the features of the off road...

 

^^ I think you mean Trac in 4LO , not ATRAC

The OP has a Sport , so no ATRAC

 

There is no doubt that the computer is cutting the throttle in 4 Hi, unless I completely turn TRAC off, (hold button 3 sec.). I was hoping that there was a mode that would keep the semi-LSD brake working without screwing with the throttle. It's looking like not. Another question: does the LSD Braking system control both the front and rear brakes? I was thinking only the rear...

 

Christian - would TRAC actually cause the RPMs to drop while the op is still on the gas? I noticed the same thing last weekend going through mud, was almost all the way through and all of a sudden it felt like I lost power while in 4H. Made it but was very confused.

 

The other day I was at a stop light, no one around.

Pressed the trac control button.

The AUTO LSD button lit up as well as the trac off symbol (the car skidding icon).

Floored it and spun the tires.
After a second or 2 the trac control icon (the one with the car skidding) turned itself off and then it pulled the throttle. The AUTO LSD light stayed lit.

I did not know it would automatically override itself.

 

Thanks for the info. I suppose if the brakes are grabbing at both the front and rear, it could seem like the throttle is being cut. I'm going to play with it some more to confirm this. BTW: the rapid beeping sound was going off when I noticed the problem.

 

OP you should do this mod i linked below. it uses the ABS system to act sort of like front/rear lockers...


http://www.tacomaworld.com/forum/technical-chat/51946-4low-trac.html

 

Thanks, but I mostly use 4 Hi for wheel-speed for traversing plowed fields and S. Ga. swamps. I'm beginning to wonder if the ABS-Semi-Brakey-LSD-Trick is using both front and rear brakes and robbing enough power to make me think that the computer is limiting the throttle. I'm going to test it out this weekend.

 

Had a few beers and tested it in the back yard. Throttle stop definetly occurs in 4 Hi at approx. 35 MPH wheel speed unless the TRAC is turned completely off. This is dumb; but so is the fact that there is no locker/DCLB option. The "Mud-Bog" guys would like my backyard in its present condition. Look at N 30-53-55 W 084-37-36 Google Earth 2007 imagery.

 

It's definetly cutting the throttle in a straight line, at about 3,500 RPM. Lesson learned. I'm just planning on turning it off completely next time. Thanks for your effort. I use this truck for a Land Surveying field vehicle. We need the DCLB for tools & equipment. I feel certain that there is a market for the Off-Road stuff on the long truck. Here's a picture, nothing special.

 

DCLB FTMFW

 

08 DCLB FTMFW - no BS shutdown push button things. Lock in 4*4 and go like hell. 09+ sucks

 

It's not that hard to push a button and turn it off Home Slice

 

The extra 6" in the bed really isn't worth not having a locker..