Speed when in 4Hi

Barry694

New member
I know you are supposed to be at 50mph or below when shifting to 4Hi in the 4Runner with part-time 4WD. However, when already engaged in 4Hi, what is the speed limit you should not exceed. It is not covered in the manual.
 
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afaik there is no speed limit for 4hi. speeds under 50mph or 80kmh are required to shift into it.


however, if situation dictates you need to shift into 4hi, wouldnt it be safe to keep the vehicle at a lower speed?

just because you have 4hi doesnt make you invincible like some of the soccer moms around here with suburbans think :D
 
afaik there is no speed limit for 4hi. speeds under 50mph or 80kmh are required to shift into it.


however, if situation dictates you need to shift into 4hi, wouldnt it be safe to keep the vehicle at a lower speed?

just because you have 4hi doesnt make you invincible like some of the soccer moms around here with suburbans think :D

Stability on slippery or wet roads, it could help you to make sharp turn to avoid soccer moms ; )
 
After handed my beer over to my girl I've kicked it up to 65 / 70mph many times in the snow using my jeep, worked fine! :D
 
Stability on slippery or wet roads, it could help you to make sharp turn to avoid soccer moms ; )

this is true.


although i've never had to put my 4runner into 4hi in the rain. heck it even gets around fine when theres snow on the ground in 2hi.

:thumb3:
 
afaik there is no speed limit for 4hi. speeds under 50mph or 80kmh are required to shift into it.


however, if situation dictates you need to shift into 4hi, wouldnt it be safe to keep the vehicle at a lower speed?

just because you have 4hi doesnt make you invincible like some of the soccer moms around here with suburbans think :D

What about driving on a straight, dry road, while meeting the requirement for 10 miles per month in 4WD? Nothing there to dictate a lower speed.
 
Oh no, are we going to that dark place again? There must be several threads that have covered this topic in great detail ad nauseum !
 
What about driving on a straight, dry road, while meeting the requirement for 10 miles per month in 4WD? Nothing there to dictate a lower speed.

i suppose, there is nothing there to dictate a lower speed so yes, you could do whatever speed you wanted in 4hi to fulfill the monthly 10miles/km thing.

i usually head out to the empty sand pits 15 minutes drive from my place and mess about in 4hi/lo to lubricate the parts and make sure things are in good working order. i especially like to do this prior to taking my 4runner in for servicing so that if i do discover something then i can tell my service tech and have the issue addressed.

my uncles had his third gen since 02 and doesnt puts it into 4hi/lo unless its winter and his 4runner still shifts and operates just as well as it did the day he got it.

others may disagree and YMMV, but im not quite sure if the whole 10miles/km in 4wd a month thing is critical or would cause a catostrophic failure of the transfer case if not done.

:hungry:
 
4HI is like 2HI only the diff is locked and all 4 wheels are turning, instead of just the back.

I wouldn't do 70, but I think 50-ish would be safe under certain conditions. Just remember your fronts are locked...

If you want to do 70+ on say snow or sand or whatever, then get an AWD.

All front diffs delivered on the 5th gen are open differentials.

Only the TE comes with a locking rear differential, and that can only be engaged in 4WD-LOW without wiring modifications.

On part-time 4WD vehicles, there is no center differential. A clutch is engaged that locks the front and rear drive shaft outputs together, nothing more.
 
All front diffs delivered on the 5th gen are open differentials.

Only the TE comes with a locking rear differential, and that can only be engaged in 4WD-LOW without wiring modifications.

On part-time 4WD vehicles, there is no center differential. A clutch is engaged that locks the front and rear drive shaft outputs together, nothing more.

i think feral's choice of wording was a bit confusing but i got the point.

i think what he was saying by diff locked is that the front wheels will be engaged by the shifting of the transfer case from 2hi to 4hi making all 4 wheels spin.

the actual diff being locked like we would see with an air locker or e-locker isn't what he was saying. i think he just meant that the front wheels would be engaged.
 
i think feral's choice of wording was a bit confusing but i got the point.

i think what he was saying by diff locked is that the front wheels will be engaged by the shifting of the transfer case from 2hi to 4hi making all 4 wheels spin.

the actual diff being locked like we would see with an air locker or e-locker isn't what he was saying. i think he just meant that the front wheels would be engaged.

Exactly. I typed it too quick... I really do know what I'm talking about...Really...But thanks homeyclaus for the "schooling".
 
Exactly. I typed it too quick... I really do know what I'm talking about...Really...But thanks homeyclaus for the "schooling".

Which is why i jumped on it, rather than let that become the perceived "truth."

Attention to detail, my friend, attention to detail.
 
At best, the internet is akin to the game of telephone we all played in Kindergarten.

Coulda fooled me....I thought we all drove thin skinned, cheap plastic, tinny sounding, no insulation, no power, no fancy taillight, oxidized headlighted, terrible tire'd, crappy antenna'd POS vehicles that got poor gas milage to boot! At least that's what I read from some of these posters. You know what my two items I wish I had after 22K miles in 10 months? An adjustable dash light and a lighted homelink button. Thats all. Everything else is fine and Toyota has made a good, sound vehicle with the 5G 4Runner. I am going to write a review in February on a year with the 4Runner.
 
Coulda fooled me....I thought we all drove thin skinned, cheap plastic, tinny sounding, no insulation, no power, no fancy taillight, oxidized headlighted, terrible tire'd, crappy antenna'd POS vehicles that got poor gas milage to boot! At least that's what I read from some of these posters. You know what my two items I wish I had after 22K miles in 10 months? An adjustable dash light and a lighted homelink button. Thats all. Everything else is fine and Toyota has made a good, sound vehicle with the 5G 4Runner. I am going to write a review in February on a year with the 4Runner.

By adjustable dash light you mean to dim/ brighten the gauge cluster, center stack, etc? Try twisting the trip meter button, that's how it was adjusted in my 03 Highlander. It wasn't the actual trip odo button but looked like it. Look in the manual, I'm sure there is one there. Seems weird Toyota wouldnt put one in…
 
Coulda fooled me....I thought we all drove thin skinned, cheap plastic, tinny sounding, no insulation, no power, no fancy taillight, oxidized headlighted, terrible tire'd, crappy antenna'd POS vehicles that got poor gas milage to boot! At least that's what I read from some of these posters. You know what my two items I wish I had after 22K miles in 10 months? An adjustable dash light and a lighted homelink button. Thats all. Everything else is fine and Toyota has made a good, sound vehicle with the 5G 4Runner. I am going to write a review in February on a year with the 4Runner.

I gotta tell ya, I'm getting really close to lighting that Homelink button. For some reason, even though I know it's there, I can't find it at night without turning the maplight on.
I was looking into a dashlight override mod too, that keeps the lights bright with the headlights on. It may not be super easy. Toyota, it appears, has overengineered the dashlights too :). Guages, the radio, and the HVAC appear to be different circuits, but still interlinked. I dunno for sure. I really have been fighting myself- do I want to take the dash out for the 4th time to access those wires?? Maybe after Xmas...
 
Which is why i jumped on it, rather than let that become the perceived "truth."

Attention to detail, my friend, attention to detail.

Attention to detail? You just used a lower case "i" in your sentence...Attention to detail...Hmph!

All kidding aside...

I wish it had a light in the center console compartment.
 
I gotta tell ya, I'm getting really close to lighting that Homelink button. For some reason, even though I know it's there, I can't find it at night without turning the maplight on.
I was looking into a dashlight override mod too, that keeps the lights bright with the headlights on. It may not be super easy. Toyota, it appears, has overengineered the dashlights too :). Guages, the radio, and the HVAC appear to be different circuits, but still interlinked. I dunno for sure. I really have been fighting myself- do I want to take the dash out for the 4th time to access those wires?? Maybe after Xmas...

Well, I have an undecidedly non engineering fix for the Homelink button: A dab of glow in the dark fingernail polish on the "tits" that stick up on the button. Will post pics of this awesome mod....
 

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