sandcrawler
Senior Member
yes, transfer case not center differential.
Is it okay to use 4WD Hi on dry pavement?
- Thread starter adoihcj
- Start date
eskimochaos
Banned
perhaps your right. I had no idea toyota butchered this model as much as they did.........yea your right my baaaadddd. Wow this is very disappointing.
Clemsonfan15
New member
There are a lot more positives than negatives for the 5th Gen in my opinion.
Selectable 4wd isn't bad at all.
Selectable 4wd isn't bad at all.
sandcrawler
Senior Member
i agree that there are lots of positives. (foremost: the mere existence of the 5G, considering the recent sales figures.) it's just that for owners of the 4G with multimode &/or full-time 4WD and the V8 there are a couple of pretty sizable functionality negatives that are hard to just gloss over.
i want to love it!
i want to love it!
5th gen part-time 4wd does not have center diff just transfer case.
When you have transfer case the physical design of the drivetrain should be similar in both cases (has center diff, does not have center diff).
One shaft goes from transmission into transfer case. From transfer case one shaft goes back to the rear diff and one goes to the front diff.
If there is no such a thing as center diff it should not be allowed to drive on dry pavement despite the speed. The only exception would be driving on level surface with straight steering. In other cases it might damage drivetrain.
5th gen full-time 4wd on the other hand DOES have center diff because it's impossible to setup full-time 4wd without center diff. There is a center diff so there is a possibility to lock/unlock it but with 5th gen it's not possible to do it via button push. in 5th gen you're limited to 3 choices: full-time center diff unlocked, full-time center diff locked, full-time low-range center diff locked.
IIRC in 4th gen if you lock center diff, stability control systems are off.
It's interensting how DAC works in 5th gen because you have to go to low-range diff locked (if equipped) in either cases where VSC systems should went off.
When you have transfer case the physical design of the drivetrain should be similar in both cases (has center diff, does not have center diff).
One shaft goes from transmission into transfer case. From transfer case one shaft goes back to the rear diff and one goes to the front diff.
If there is no such a thing as center diff it should not be allowed to drive on dry pavement despite the speed. The only exception would be driving on level surface with straight steering. In other cases it might damage drivetrain.
5th gen full-time 4wd on the other hand DOES have center diff because it's impossible to setup full-time 4wd without center diff. There is a center diff so there is a possibility to lock/unlock it but with 5th gen it's not possible to do it via button push. in 5th gen you're limited to 3 choices: full-time center diff unlocked, full-time center diff locked, full-time low-range center diff locked.
IIRC in 4th gen if you lock center diff, stability control systems are off.
It's interensting how DAC works in 5th gen because you have to go to low-range diff locked (if equipped) in either cases where VSC systems should went off.
024RunnerSE
New member
2002 3rd Gens also have a lockable center differential. 2wd, AWD, 4Hi locked, AWD Low, 4lo Locked.
sandcrawler
Senior Member
sandcrawler
Senior Member
i never knew that about the '02 3G. very interesting.
Martinjmpr
New member
All 2001 - 2002 4wd 4Runners had a multimode t-case with a locking center diff, but no rear locker was available on these.
1999-2000 4wd 4runners had multimode on the Limited models.
Until Toyota came out with the 2009 Trail Edition (I think that's what it was called) the only 4runners that came with both multi-mode 4wd AND the rear E-locker were the 1999 - 2000 3rd gen models.
adoihcj
New member
So I think what I'm hearing regarding my part-time 4WD system for my 2010 SR5, I should not use 4WD Hi on dry pavement unless I am doing so to keep the system lubed for a short period of time or driving straight for a long distance (which is usually never the case where I live).
alaskaman
Senior Member
check.:trophy:
I don't think part time 4wd needs to be driven for the system to be lubed.
This thing comes from 4th gen all-mode 4wd v6 with dial shifter.
5th gen parti-time has a knob and there is no actuator I guess that needs to be exercised periodically.
adoihcj
New member
My SR5 has the stick on the floor and the owners manual says to drive 5 or 10 miles per month in 4WD Hi to keep it oiled/lubed. Don't know much about 4WD (I bet you couldn't tell, right), but this is what the manual says.
He's got a 5th gen, 2010 SR5. It doesn't have a Torsen center diff like your 4th gen. It is NOT ok to run the 5th Gen SR5 and Trail Edition in 4WD on dry pavement.
On the 5th gen, only the Limited trim line has a Torsen center diff.
Nope. Only the Limited trim line of the 5th gen has the Torsen.
On the 4th gen, all trim lines got the Torsen. Not so for the 5th gen.
I have a 2010 SR5 and will run it on pavement as needed. I think if you use common sense and stray from sharp turns/donuts you are fine. The manual is very vague to say the least. I am very familar with the 4th gen, and this is different than the Torsen setup. but also guys I ran alot of 4wheel stuff in military and its fine, and it does last in 4high long as you take it easy on turning real sharp.
I can say I liked the torsen better, always on, no issues, 4wheel there for the Non user, read "ladies", and no fuss.
My 99 Limited is nice, basically the same as the 4th Gen V8s. very user friendly. I wish the new 2010 sitting beside it in the garage had the exact same setup, but it doesnt.
I can say I liked the torsen better, always on, no issues, 4wheel there for the Non user, read "ladies", and no fuss.
My 99 Limited is nice, basically the same as the 4th Gen V8s. very user friendly. I wish the new 2010 sitting beside it in the garage had the exact same setup, but it doesnt.
Ive had both and once you shift into 4HI they are the exact same.
4HI + center diff unlocked = AWD doesnt matter if it is V6 or V8
I snagged a 5th GEN Vin number from the dealer and threw it onto Toyota's Owners website (sort of a useless appendage if you ask me). I did this so I could read the manual...
In my reading of the manual, it states NO cautions as to driving in 4WD, with the 5th GEN, on dry pavement. It only states that you can manually shift into 4WD at any speed up to 60mph.
Given how the manual seems to state plenty of cautions for clearly obvious things, wouldn't they use big, bold, red letters, in a caution box to tell people not to drive in 4WD on dry pavement if it was a problem?
In my reading of the manual, it states NO cautions as to driving in 4WD, with the 5th GEN, on dry pavement. It only states that you can manually shift into 4WD at any speed up to 60mph.
Given how the manual seems to state plenty of cautions for clearly obvious things, wouldn't they use big, bold, red letters, in a caution box to tell people not to drive in 4WD on dry pavement if it was a problem?
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