07-04-2020, 01:05 PM
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#496
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Join Date: Nov 2019
Location: Tucson, AZ
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Real Name: Todd
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Member
Join Date: Nov 2019
Location: Tucson, AZ
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Real Name: Todd
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Well, 4Lo is flashing at me today. Went for an overnight camping trip yesterday and 4Lo and center diff lock were working yesterday. This morning, they worked for a little bit and started having issues. So I put it back into 4Hi (V8 AWD) and about 30 minutes later, 4Lo started flashing at me and now won't turn off. Just got home and tried tapping the servo housing with a hammer but still no go. So now I get to trouble shoot and hope I can get the stupid thing working again. This has me ready to sell the 4runner. The tcase shifting is far too unreliable and an FJ case swap (manual shifting) runs about $2500 for parts alone. My 1999 Tacoma is far more reliable and capable off-road.
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2003 4Runner Limited 4wd V8 - Build thread on Tacoma World
FJ tcase swap, VVT intake swap, Solid Offroad motor mounts, Doug Thorley y-pipe, Bold Performance cat-back, ADS shocks F&R, Metal Tech LTHD springs rear, 1" body lift, 285/75/17 Toyo R/T Trails on Sequoia rims, Coastal front bumper, CAD rear bumper
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07-04-2020, 01:18 PM
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#497
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Senior Member
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Join Date: Jul 2015
Location: Northern California
Age: 37
Posts: 1,471
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Senior Member
Join Date: Jul 2015
Location: Northern California
Age: 37
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Quote:
Originally Posted by xtremewlr
Well, 4Lo is flashing at me today. Went for an overnight camping trip yesterday and 4Lo and center diff lock were working yesterday. This morning, they worked for a little bit and started having issues. So I put it back into 4Hi (V8 AWD) and about 30 minutes later, 4Lo started flashing at me and now won't turn off. Just got home and tried tapping the servo housing with a hammer but still no go. So now I get to trouble shoot and hope I can get the stupid thing working again. This has me ready to sell the 4runner. The tcase shifting is far too unreliable and an FJ case swap (manual shifting) runs about $2500 for parts alone. My 1999 Tacoma is far more reliable and capable off-road.
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That sucks. Makes me glad my 2nd and 5th gen both have a manual lever. I'm wondering if there's some trick like doing slow wide figure 8's to help shafts line up while attempting engagement. I don't own one to test that theory but it's free and easy
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The 4Reak Show: 1995 4Runner, 3.4 swapped, manual conversion, supercharged & 7th injected, Eaton TrueTrac in rear, poly bushings F&R, lots of other outrageous add ons...
Wife's: 2016 Trail Premium, bone stock until she joins T4R.org one day...
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07-05-2020, 07:51 AM
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#498
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Join Date: Dec 2016
Location: Connecticut
Posts: 406
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Join Date: Dec 2016
Location: Connecticut
Posts: 406
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Quote:
Originally Posted by xtremewlr
Well, 4Lo is flashing at me today. Went for an overnight camping trip yesterday and 4Lo and center diff lock were working yesterday. This morning, they worked for a little bit and started having issues. So I put it back into 4Hi (V8 AWD) and about 30 minutes later, 4Lo started flashing at me and now won't turn off. Just got home and tried tapping the servo housing with a hammer but still no go. So now I get to trouble shoot and hope I can get the stupid thing working again. This has me ready to sell the 4runner. The tcase shifting is far too unreliable and an FJ case swap (manual shifting) runs about $2500 for parts alone. My 1999 Tacoma is far more reliable and capable off-road.
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Have you checked your tire pressures? A low tire will cause issues. Simple stuff first.
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2007 SR5 V6 long live the kingfish !
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07-05-2020, 10:15 AM
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#499
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Join Date: Nov 2019
Location: Tucson, AZ
Posts: 816
Real Name: Todd
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Member
Join Date: Nov 2019
Location: Tucson, AZ
Posts: 816
Real Name: Todd
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Quote:
Originally Posted by Trumpet
Have you checked your tire pressures? A low tire will cause issues. Simple stuff first.
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No, it wouldn't.
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2003 4Runner Limited 4wd V8 - Build thread on Tacoma World
FJ tcase swap, VVT intake swap, Solid Offroad motor mounts, Doug Thorley y-pipe, Bold Performance cat-back, ADS shocks F&R, Metal Tech LTHD springs rear, 1" body lift, 285/75/17 Toyo R/T Trails on Sequoia rims, Coastal front bumper, CAD rear bumper
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07-05-2020, 10:24 AM
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#500
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Join Date: Jun 2020
Location: Moncure, NC
Posts: 50
Real Name: Arn
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Join Date: Jun 2020
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Thanks for the reminder! I ran mine through the combinations on my gravel street and all seemed to work ok!
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2008 4Runner Sport V8
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07-06-2020, 12:27 AM
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#501
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Join Date: Oct 2019
Location: Tucson
Posts: 415
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Join Date: Oct 2019
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Not sure why so many are having issues with the 4th gen 4 wd system. We might engaged our 4 hi 2 may be 3 times a year. I change the transfer case fluid once a year before snowboarding season and after 13 years and 275 k miles the 4wd has been rock solid.
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07-20-2020, 12:24 PM
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#502
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Junior Member
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Join Date: May 2020
Location: Atlanta
Posts: 4
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Join Date: May 2020
Location: Atlanta
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Quote:
Originally Posted by 4Reak Show
Alright so my 2016 4Runner rear diff lock does this to me too. And it's been mine since brand new, only 27K odometer. What helps me a LOT with rear diff lock engagement is slightly turning the steering wheel while driving slowly in sort of a slalom maneuver back and forth about a 10 degree turning angle. So very little. And I can hear it click right into place by the second slalom every time.
What I accredit it to is that the rear axle shafts are not aligned TOGETHER for the locking sleeve to engage. So driving forward or backward perfectly straight does nothing since that keeps axles in the same position relative to each other. The slow slalom forces the axles to spin at slightly different speeds to each other allowing the splines of whatever sleeve needs to engage to line up correctly.
I would bet a center diff lock issue could be tested the same way but probably would need a more severe turning radius since those alignment shafts are for front and rear tire speeds, not side to side tire speeds.
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4Reak Show-Worked like a charm!
Muuuuuuch appreciated!!! I tried the slight turning approach and it works every time, within maybe 5 to 10 feet. Friggin brilliant.
I know differentials as a general concept on paper but I've never pulled one apart (at least not a vehicle differential). I'm not familiar with the innards of the one on our 4Runners, but I think you are dead on about why this works; just need to get the two sides rotating at different speeds so the locking coupling/sleeve/spline/whatever has a chance to align.
Everything working pretty much like clockwork now in my 4WD system.
Cheers everyone....thread bump....Use Or Lose reminder.....
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08-04-2020, 08:58 AM
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#503
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Senior Member
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Join Date: Mar 2004
Location: Ontario, Canada
Posts: 3,042
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August reminder.
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'04 SR5 V6 4x4 Galactic Grey Mica. Delivered 03/17/2004. Link to my mod list in posts 7, 8 & 9 of this thread: http://www.toyota-4runner.org/showthread.php?t=21354
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[__/[_[_\____\,_
L---L-L-L--0=*=0
`(o)_---(o)_--)_)`.........
``````````````````````` The battle begins at the end of your driveway... Game On! "Car!"
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08-04-2020, 10:01 AM
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#504
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Join Date: Jun 2020
Location: Moncure, NC
Posts: 50
Real Name: Arn
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Join Date: Jun 2020
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Do you guys exercise "all the buttons" or only the 4LO on the 4th Gen? DAC, Center diff lock, Traction control, RSCA off are the ones I have in mind.
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2008 4Runner Sport V8
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08-04-2020, 10:05 AM
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#505
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Join Date: Aug 2020
Location: TN
Posts: 15
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Join Date: Aug 2020
Location: TN
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Great reminder, thank you -
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08-04-2020, 10:52 AM
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#506
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Join Date: Jun 2019
Location: Indianapolis, IN
Age: 35
Posts: 159
Real Name: Casey
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Join Date: Jun 2019
Location: Indianapolis, IN
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Quote:
Originally Posted by Bigcanoe
Do you guys exercise "all the buttons" or only the 4LO on the 4th Gen? DAC, Center diff lock, Traction control, RSCA off are the ones I have in mind.
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I just do center diff lock and 4LO, but I think the biggest concern is 4LO since the 4wd actuator is what is prone to failure if you don't exercise it regularly.
I also don't have a traction control button - I think that was added in 2008.
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2007 Limited V8 | 275/70/18 Falken Wildpeak AT3W | Spidertrax | 4xInnovations Weld On Sliders | Victory 4x4 Blitz Front Bumper | RCI Skids | TNF Rear Bumper | Smittybuilt Winch | KOYORAD Aluminum Radiator |OME 886 Front/Toytec Superflex HD Rear and OME Shocks/Struts | JBA High Caster UCA | Rebuilt LCA with Superpro bushings + Moog BJ | HCF Delete | Doug Thorley Shorty Headers | Magnaflow HFC | Gibson Catback | Rear Diff Breather Extension | 20" Spot/Flood | 9" Spots | DD SS3 Yellow Fogs | Amber Grill Lights | Fog Lights Anytime Mod
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08-04-2020, 11:46 AM
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#507
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Junior Member
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Join Date: Jul 2016
Location: Naperville, IL
Posts: 6
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Good to know! When I get my ‘03 this week I’ll set a reminder for myself on my phone, especially since I can’t remember shit like this 😂🤣
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08-10-2020, 10:45 PM
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#508
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Join Date: Jul 2020
Location: Orange County, CA
Posts: 100
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Location: Orange County, CA
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I thought mine worked when I purchased the vehicle a month ago but when I tried afterward, it would just blink. I could hear the actuator whine so I knew it was functional. I spent a little while tapping the actuator and transfer case while engaging 4Lo and it didn't seem to make much difference.
However, just drove down from Portland to Phoenix this last weekend and tried the 4Lo when I reached southern CA after 8 hours of driving and with 105 degree heat. It engaged almost immediately. Tested a couple more times just to be sure and now it seems to be working great. I'll be sure to exercise it monthly to keep it working!
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2006 4Runner Sport Edition 4WD V6
Dobinsons 2.5"/1.5" - C59-302, GS59-221, C59-505, GS59-705 | General Grabber ATX 265/70R17 | TPMS Bypass Mod
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09-02-2020, 09:33 PM
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#509
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Senior Member
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Join Date: Mar 2004
Location: Ontario, Canada
Posts: 3,042
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Senior Member
Join Date: Mar 2004
Location: Ontario, Canada
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September reminder.
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'04 SR5 V6 4x4 Galactic Grey Mica. Delivered 03/17/2004. Link to my mod list in posts 7, 8 & 9 of this thread: http://www.toyota-4runner.org/showthread.php?t=21354
____________
[__/[_[_\____\,_
L---L-L-L--0=*=0
`(o)_---(o)_--)_)`.........
``````````````````````` The battle begins at the end of your driveway... Game On! "Car!"
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10-03-2020, 02:49 PM
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#510
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Senior Member
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Join Date: Mar 2004
Location: Ontario, Canada
Posts: 3,042
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Senior Member
Join Date: Mar 2004
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October reminder.
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__________________
'04 SR5 V6 4x4 Galactic Grey Mica. Delivered 03/17/2004. Link to my mod list in posts 7, 8 & 9 of this thread: http://www.toyota-4runner.org/showthread.php?t=21354
____________
[__/[_[_\____\,_
L---L-L-L--0=*=0
`(o)_---(o)_--)_)`.........
``````````````````````` The battle begins at the end of your driveway... Game On! "Car!"
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