New Taco Off-road Failure

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DAW89446 said:
It will be interesting to see what broke.
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Classic CV break is my guess. Bouncing or quick loss and gain of traction with wheel spin and kaboom. Broken CV on one side or the other will just spin with the open diff looking like loss of drive up front.

This is why I dont wheel in winter. Love the TFL guys and they dont go easy on the reviews but this breakage seems pretty weak :( Would think they would be able to diagnose what happened on the trail pretty easily.
 
El Dusty said:
Classic CV break is my guess. Bouncing or quick loss and gain of traction with wheel spin and kaboom. Broken CV on one side or the other will just spin with the open diff looking like loss of drive up front.

This is why I dont wheel in winter. Love the TFL guys and they dont go easy on the reviews but this breakage seems pretty weak :( Would think they would be able to diagnose what happened on the trail pretty easily.
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I think that the son of the one of the TFL guy is the one that is knowledgeable.
 
Though their intent was to put the rig to the test, I think it was foolish to take the truck out in even that little bit of snow and ice and with street tires.

It appears that the Colorado had at least A/T's, as he was able to back into the rough spot and still pull the Tacoma. Depending on what package the Colorado had, it may have had a front locker, which definitely would help. I didn't watch the entire video, just started at the suggested time stamp and followed it to the end.

Not sure why Toyota is reluctant to offer a front locking diff in their off road models. If it was a broken CV axle, a locker in front would retain at least 3WD instead of 1WD unlocked in back and 2WD locked.
 
Lockers are really hard on axles. And if you have IFS and thus CV's it's going to be doubly hard on them. So if you have weak CV's, lockers will destroy them, easily. Even weaker live axles will not stand the stress of lockers. Lots of Dana 30's have found that out the hard way.
 
This seems like a transfer case issue. Zero wheel spin from the front. Beyond the initial sound no additional noise from the front. This doesn't make a ringing endorsement for new generation Tacoma or 4runner. The Tacoma was running empty with no additional weight. TFL usually runs street pressure which means less traction. The bump They gave to get onto the rock was very minor. Imagine the Overlanders adding 1500lbs of stuff. Stress on the TC would be much higher. Curious to find out the cause and will Toyota warranty the damage?
 
Hopefully, this is a defective mechanical part……….but if not, then LC250 is basically a paper tiger….
 
Thai said:
The Land Cruiser, 4Runner, Taco, and GX550 all share the same platform. So yes, it is a concern for all.
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You're probably right, I just never viewed the Tacoma to have the same durability as a Prado based build, like the GX for instance.

I have no idea what the 6th generation 4Runner is going to be but you do hear a lot that it will be based on the Tacoma. Thinking it might not be as durable as a GX overland or the 250. We'll see.
 
I thought it was a electrical actuator problem, but since we heard a pop, it could be the actuator releasing out of gear and the gears popped, thus since it stopped holding an electrical charge it would no longer put the gears back into place. Actuator failure, just a thought.
 
Wowzers! Does not bode well for Toyota. Will be interesting to follow this and see what exactly happened and the point of failure. Weak/poor materials? Bad engineering? Cost cutting?


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When i saw the video, my first impression was CV joint. But looks like a T-case.
Anyway, any mass produced item will have a few defective units. I don't have any idea who produces that T-case for Toyota. Maybe its in house, that would be easy. But probably outsourced. Anyway, it may not really be a problem. Maybe only one in a million. The rest could be bullet proof. Only time will tell. It sure didn't look like it was under a lot of stress. So i would go with a rare defect.
 
The last Gen of GX has full time 4x4 with locking transfer case. So failure of the front diff disconnect. Probably an unusual failure, and probably isolated.
Anything can fail, and anything mass produced can have a few that are defective.
 
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