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SUVs Toyota FJ Cruiser Toyota 4WD systems explained
2400 messages, Last post on Nov 22, 2009 at 10:30 AM
You are in the Toyota FJ Cruiser Forum. Your Hosts are steve_ & tidester
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Replying to: wwest (Jun 03, 2009 12:00 pm) |
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| If you turn the knob to 4hi in a 4wd V6 4runner (say 2007-2009), you can operate it on dry pavement correct? Only if you lock the center diff and/or put it in 4 low does it need to be turned off? | |
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Replying to: sabre364 (Jun 12, 2009 11:57 am) Don't do that until you're ABSOLUTELY sure. Some 4runners come with an AWD mode but I'm pretty sure the center diff'l gets locked in 4-hi and 4-low mode. |
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Replying to: sabre364 (Jun 12, 2009 11:57 am)
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Replying to: green (Jun 14, 2009 2:04 am) I would take greater care in your advice..... Down at the nuts and bolts level there is a GREAT deal of difference between the "AWD" (R/awd) mode provided by the Torsen (Torque Sensing) diff'l and a locking center diff'l used in "TRUE" 4WD mode. The question was too specific, "can I use 4-hi" for your answer to be "on point". Yes, a Torsen center diff'l is a STELLAR method of providing a R/awd system, but it should NEVER be described in the context of ...."4-hi".
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Replying to: wwest (Jun 14, 2009 8:58 am) Okay, but it's a non sequitar. wwest - The question was too specific, "can I use 4-hi" for your answer to be "on point". I provided information for understanding all the transfer modes which, of course, also answered the question. wwest - Yes, a Torsen center diff'l is a STELLAR method of providing a R/awd system, but it should NEVER be described in the context of ...."4-hi". It's Toyota's term, tell them. |
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Replying to: sabre364 (Jun 12, 2009 11:57 am) If, perchance, my 1st reply was unclear the answer is yes, you can operate on dry pavement with the knob in 4hi. 4lo, too, as long as the center diff is unlocked.
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Replying to: green (Jun 14, 2009 3:22 pm) Additionally it appears there were three driveline options in 2007 and only the multi-mode option included a R/awd functionality. And for some reason Toyota has discontined use of the Torsen term prior to 2007. I see no significant difference in the mechanical make up of the transfer case so I assume the Torsen is still used. Maybe a clone, patent expired.
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Replying to: wwest (Jun 14, 2009 7:13 pm) Are you sure it was a 4Runner manual? Here are some paragraph headings, verbatim, from page 168 of the 2007 manual for the multi-mode four-wheel drive models. “H2” (high speed position, two-wheel drive, center differential unlocked): “H4” (high speed position, four-wheel drive, center differential unlocked): “H4” (high speed position, four-wheel drive, center differential locked): “L4” (low speed position, four-wheel drive, center differential unlocked): “L4” (low speed position, four-wheel drive, center differential locked): wwest - Additionally it appears there were three driveline options in 2007 and only the multi-mode option included a R/awd functionality. Yes, for 2007 as well as the other years. Driveline options are 2WD, Multi-mode 4WD with 2WD capability (V6), full-time 4WD (V8). All the headings from above, except H2, apply to the full-time 4WD.
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Replying to: green (Jun 15, 2009 1:55 am) For the 2007 model there is a separate switch for un/locking the center diff'l regardless of driveline model, plain 4WD or Multi-mode. I seem to remember that one of these driveline options was not available with the V6.
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