4WD speed question

[SigPig94]

Hi all:
I was told by the dealership that I should NOT exceed 35mph when I have my 4Runner in 4WD, specifically 4H….just curious if this sounds accurate because what about highway driving in heavy snow/bad conditions/etc???
Thx for any advice and other tips on 4WD usage!

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[Jakethewhippet1]

https://www.4runner6g.com/forum/threads/4h-4-high-max-speed.7739/#post-92991

 

[MikeD]

Hi all:
I was told by the dealership that I should NOT exceed 35mph when I have my 4Runner in 4WD, specifically 4H….just curious if this sounds accurate because what about highway driving in heavy snow/bad conditions/etc???
Thx for any advice and other tips on 4WD usage!

The BS that some dealers are dishing out is getting me annoyed. Ask them for a reference in the owners' manual. There they will find this (p408 of Hybrid manual) (and consistent with what Nodak said in the linked thread):

"Shifting from “4H” to “2H”​

1 Reduce vehicle speed to less than 62 mph (100 km/h).​

2 Push and turn the front-wheel drive control switch to “2H”."​

It would be hard to "reduce vehicle speed to less than 62 if you are supposed to max out at 35. UGGH

 

[brumey]

I think reading the owner manuals should be a requirement for service techs and advisors. The lack of knowledge is shocking to me. I feel I know more that the advisor at each interaction. Not just Toyota, other big name brands too.

 

[127.0.0.1]

Hi all:
I was told by the dealership that I should NOT exceed 35mph when I have my 4Runner in 4WD, specifically 4H….just curious if this sounds accurate because what about highway driving in heavy snow/bad conditions/etc???
Thx for any advice and other tips on 4WD usage!

4L is where you should never exceed 35mph

you'd be strangling that motor and transmission
running it at 'surface street' speeds in 4L

heck in 4L keep it under 20...[my 4L speeds are basically 0-4mph]

 

[Lamuncha]

I am not sure 4 WD at highway speed in bad conditions gives you any advantage over 2 WD, especially if it isn't independent. In fact it could be a disadvantage as the wheels are more or less locked to each other.
If you are trying to motivate through a foot of heavy snow - yes probably would be an advantage, but you likely are not going 60.

 

[127.0.0.1]

I am not sure 4 WD at highway speed in bad conditions gives you any advantage over 2 WD, especially if it isn't independent. In fact it could be a disadvantage as the wheels are more or less locked to each other.
If you are trying to motivate through a foot of heavy snow - yes probably would be an advantage, but you likely are not going 60.

true..
it is an advantage in AWD where there is a center diff and you
can keep it in AWD in turns with no issues, it helps pull you along
w/o slip when pavement is less than stellar or conditions suffer

not much of an advantage with PT 4wd, it's not really doing good
at high speeds and it's scrubbing the tires and making a lot of transfer case heat
while pulling you thru turns. so yeah it works in the salad but also has inherent slip
where AWD doesn't

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