Need to understand H2 vs H4

In trying to understand the difference in driving quality, etc I put my 4WD into H4 and drove to work today, but when I made a 90 degree turn into the parking lot in H4 mode, the truck almost ground to a stop.

Is there something about H4 mode that I don't understand, such that I should not drive around in it??

In H2 mode and wet roads, I don't get the bestest of traction.

 

Yeah, no H4 on pavement unless you have a spare 4Gs lying around to replace your transfer case.

http://www.4x4abc.com/4WD101/def_turnpart.html



http://4x4abc.com/4WD101/axle-wind-up.html

 

DO NOT use you 4WD on the flat pavement!! You can only for a little but to lube everything up but thats about it!!! Only use it when off-roading!!

 

ya... dont drive in 4wd on the pavement. that can cause binding in your drive line and break things.

if you arent getting thaht great of traction in 2wd in the rain, then slow down

 

Maybe you shouldn't of bought a 4x4............

 

these threads have to be a joke right?

 

If you got an owners manual read it. Never engage 4WD on pavement (unless there's a few inches of snow or ice.) Even in snow or driving offroad in dirt don't make sharp turns or you'll bind up and break things.

 

Ok guys...I gotit now. I thought H4 might just be same as AWD in some cars, but nope...it's more rugged as you've pointed out. I don't try very hard or drive fast, but tire spin out is too easy. Maybe roads are just too oily w first rains..

 

Do you think H4 is "all wheel"/"anytime All wheel" drive or something? H4 is real 4WD so NO use on dry pavement, only on surfaces your tires won't bind ( slippage).
There is no viscous/ liquid/electro magnetic differential like in jeep/lexus/audi etc. It's mechanical and locks.

 

Rocking MT's doesn't help either.

 

I see you have m/t tires. You might just need to slow er down a bit when there's rain and snow on the road.

 

This will help

Link

 

Please return to the dealership and turn your truck in immediately. A Yaris will be waiting for you.

 

problem solved

flame off, give the guy a break. he had a question so he asked.

 

I hate cops

 

i never thought id ever see an interactive 4wd training class. seriously how hard is it to read the owners manual of the little placard on the sun visor?

 

hah... its funny, i bet most people who work at the dealer couldnt explain the 4x4 systems well, maybe the mechanics could, but deffinately not the salesmen

 

Most dealers don't have a clue. I've asked my dealer a few questions about the 4WD and traction control system and found out I was just wasteing my breath.

 

Wow

After hearing this i will never drive in 4H on the street - NOT!!

Once a month i drive the truck in 4H for a couple miles to lubicate everything, on pavement.

If it makes you feel better, wait for a good rain and do it then.

Now before you all start blasting, i do try to avoid turns, but i do make a few turns.

while doing this, when i get on my street, i also stop and also put it in 4L for a short straight distance.

Now this is my THIRD toyota pick up, and i also had 2 4-runners
and i have done this with everyone of them with no problems.

During the winter i may leave it in 4H for days,
I dont engage and disengage it everytime i hit a section of bare pavement.

As long as your SMART about it, you can use it on pavement
for rain, snow, gravel or to lubricate the system once a month.

 

Back in 1988 when I was looking to buy a new 4Runner the salesman asked if I wanted to see how it handled in an offroad area. He drove with me in the passenger seat to an area a few miles away and explained how everything worked. He completly sold me on the truck...you don't get that kind of sales pitch anymore!