05-01-2015, 02:28 AM
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#1
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Senior Member
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Join Date: Oct 2014
Location: Pasadena, CA
Posts: 1,433
Real Name: Dave
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Senior Member
Join Date: Oct 2014
Location: Pasadena, CA
Posts: 1,433
Real Name: Dave
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How or when does KDSS kick in?
I test drove a 2015 T4R TE Premium with KDSS today. It drove real nice at freeway speeds and around town at 35 to 40 mph. Cornered well and had a good stiff ride on bumps and turns. No body roll, as advertised.
So I pulled over to put it in 4 wheel low and try to set all the A-Trac, Hill assist and most importantly, the KDSS. I didn't set the A-Trac, etc. but I could not find a control for the KDSS. We sat there reading the manuals for a couple of minutes. I had the Quick Start short manual. We didn't find anything on setting the KDSS.
So I have to wonder if KDSS engages automatically and releases the wheels for long travel at slow speeds. I had the truck in 4WL and drove one side up a driveway and onto a curb and then down over the curb. At 2 to 3 miles per hour all 4 tires stayed on the ground, but maybe that curb wasn't enough to really over-extend the axles and test large articulation of the wheels/tires.
Any tips? Did I miss finding the KDSS switch? Does it release the sway bars automatically at slow speeds?
BTW, I'm not going to buy this truck. It's black, which I don't want in sunny So Cal. It's the Premium with a sunroof I can't open because I'm too fair to sit in the sun. It has a sliding cargo tray I don't want ($350), a cargo cover I couldn't close with one hand ($155), NAV I don't need, Leather-like upholstery that is very nice but not for the Premium price. The sticker price is around $42,500. So if this is what you want call or go to Toyota of Pasadena and ask for David James. He's a good guy and capable of making the deal for you.
I've seen the sticker price on several T4R TE with KDSS and without a lot off accessories at around $39,000. That's what I'm looking for.
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2015 T4R Trail Edition w/KDSS. Baja Rack flat utility rack, Baja Rack ladder, WeatherTech floor mats, Demello rock sliders. RCI skid plates, Falken AT3W LT285/70R17 tires, ICON Stage 7 tubular 2" extended travel lift, ICON Rebound 17x8.5" 0 offset alloy wheels, Baxter Performance remote oil filter adapter. Side exit exhaust, 2nd recovery hook on rear frame corner, DIY wheel well liners with 1/4" neoprene rubber.
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05-01-2015, 02:34 AM
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#2
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Elite Member
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Join Date: Jan 2011
Location: San Diego
Age: 41
Posts: 11,437
Real Name: Instagram: briansd_97r
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Elite Member
Join Date: Jan 2011
Location: San Diego
Age: 41
Posts: 11,437
Real Name: Instagram: briansd_97r
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Quote:
I had the truck in 4WL and drove one side up a driveway and onto a curb and then down over the curb.
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Why are you driving in 4WD on cement?
I don't have a 5th gen. Is this something that 5th gen-ers do?
It is a mortal sin in most 4WD trucks to drive on pavement in 4LO.
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Those he commands move only in command, Nothing in love. Now does he feel his title, Hang loose about him, like a giant’s robe, Upon a dwarfish treasonous thief.
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05-01-2015, 02:42 AM
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#3
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Senior Member
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Join Date: Jul 2013
Location: Your rearview mirror in the 757
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Senior Member
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Quote:
Originally Posted by BrianSD_42
I don't have a 5th gen. Is this something that 5th gen-ers do?
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Yea, we all like to go drive trucks we have no intention of buying over curbs in 4lo on pavement. We keep it ultra real.
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2014 Trail
A mild build She gone... sad face.
2001 Limited 4x4
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05-01-2015, 02:44 AM
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#4
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Member
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Join Date: Dec 2014
Location: 🌴 Kailua Hawaii 🌴
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Member
Join Date: Dec 2014
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If you want a truck with KDSS don't you think you should do a search and see how it works?
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2015 Toyota TRAIL PREMIUM w/KDSS
2014 Toyota FJ CRUISER TTUE
2013 FJ Cruiser *sold
1994 Toyota LAND CRUISER *sold
2003 Chevrolet Z71 TAHOE *sold
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05-01-2015, 02:58 AM
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#5
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Elite Member
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Join Date: Jan 2011
Location: San Diego
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Elite Member
Join Date: Jan 2011
Location: San Diego
Age: 41
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Real Name: Instagram: briansd_97r
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thanks for confirming. lol.
If you had been there you could have cited him.
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Those he commands move only in command, Nothing in love. Now does he feel his title, Hang loose about him, like a giant’s robe, Upon a dwarfish treasonous thief.
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05-01-2015, 03:14 AM
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#6
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OP, check YouTube. There are great videos on KDSS.
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1996 T4R Limited - stock
1997 T4R Limited - stock
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05-01-2015, 07:28 AM
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#7
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Join Date: Jun 2008
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Great work, community. You guys really provided some useful guidance for this guy, and you should all be proud. Especially the 3rd gen guy who felt the need to chime in and chastise the OP because cars 'splode when you put them in 4wd for a minute on a test drive on pavement.
The KDSS system is automatically active below a certain speed (12mph I believe). This does indeed make it tough to test and see the benefit. But like you mentioned, you can find a ditch or something to nose the car in to at an angle.
Good luck in your search!
Dan
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05-01-2015, 07:37 AM
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#8
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Banned
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Join Date: Apr 2015
Location: Tampa, FL
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Banned
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Quote:
Originally Posted by Danimal
The KDSS system is automatically active below a certain speed (12mph I believe).
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you mean KDSS is not active all the time?
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05-01-2015, 07:42 AM
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#9
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Member
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Join Date: Jul 2014
Location: Mirabel, QC
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Member
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Location: Mirabel, QC
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Check the video here:
KDSS Long term reliability?
Someone post a link recently on a Toyota Training PDF file that was explaining how the system work, but I cannot find it on this computer. I'll try to find it later and post back an answer.
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2022 T4R OR (Cdn edition)
2016 T4R TE (SOLD)
2010 T4R TE: 275/70R17 BFG KO2, Bilstein 5100, TOYTEC 2.5" lift. (SOLD)
1987 Land Cruiser HJ60 (SOLD)
1974 FJ40 (SOLD)
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05-01-2015, 07:45 AM
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#10
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Quote:
Originally Posted by Danimal
Great work, community. You guys really provided some useful guidance for this guy, and you should all be proud.
The KDSS system is automatically active below a certain speed (12mph I believe).
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Wrong. Useful guidance, you should be proud.
It's a completely passive system, constantly active. When one wheel goes up enough, and the other goes down enough as determined by the hydraulic sensors, the system simply "disengages" the sway bar. You have no control over it other than deciding where to drive. It is speed sensitive. According to the service manual, the KDSS system is tied into the vehicle speed sensor, wheel speed sensors, steering position sensor.
https://www.youtube.com/watch?v=NLF6...e_gdata_player
@ DesertCanyons
this ^ helps alot. Check it out.
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2014 TE-KDSS
OPOR sliders, RCI aluminum full skids+(gas tank & A-arms), Icon Stage 2 w/ 3in overland springs, Cooper ST Maxx 255/80, Undercover HWMS w/ Superwinch Talon, K9 2.2
Daily:99 rav4 - OME baby lift, 31s, 5 speed Past:91 LC - built
Last edited by st8rocks; 05-01-2015 at 07:52 AM.
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05-01-2015, 07:53 AM
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#11
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Senior Member
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Join Date: Sep 2008
Location: coastal maine
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there is no "switch"
@ DesertCanyons
. KDSS responds to conditions automatically and independently without driver input. https://m.youtube.com/watch?v=NLF6n3nMwww
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06 SE, galactic gray V8: sold // 93 SR5, lots of rust, salt, & mods: R.I.P. // 71 FJ40, never should've let it go
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05-01-2015, 08:09 AM
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#12
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Real Name: Karl
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Its 5:00 somewhere.
WARNING: T4R.ORG IS HAZARDOUS TO YOUR WEALTH
Last edited by badhabits; 05-01-2015 at 08:22 AM.
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05-01-2015, 09:03 AM
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#13
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Banned
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Join Date: Apr 2015
Location: Tampa, FL
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Banned
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Quote:
Originally Posted by st8rocks
wrong. Useful guidance, you should be proud.
It's a completely passive system, constantly active. When one wheel goes up enough, and the other goes down enough as determined by the hydraulic sensors, the system simply "disengages" the sway bar. You have no control over it other than deciding where to drive. It is speed sensitive. According to the service manual, the kdss system is tied into the vehicle speed sensor, wheel speed sensors, steering position sensor.
https://www.youtube.com/watch?v=nlf6...e_gdata_player
@ desertcanyons
this ^ helps alot. Check it out.
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Quote:
Originally Posted by 4surfin
you mean kdss is not active all the time?
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lol.....
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05-01-2015, 09:27 AM
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#14
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Senior Member
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Join Date: Feb 2013
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Real Name: Sparky
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Senior Member
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Quote:
Originally Posted by BrianSD_42
Why are you driving in 4WD on cement?
I don't have a 5th gen. Is this something that 5th gen-ers do?
It is a mortal sin in most 4WD trucks to drive on pavement in 4LO.
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It's okay to drive it in a straight line for a periodic function test.
Also, wet boat ramp.
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05-01-2015, 09:54 AM
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#15
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Senior Member
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Join Date: Feb 2011
Location: Calgary, AB
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Join Date: Feb 2011
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Quote:
Originally Posted by LandCruiser
It's okay to drive it in a straight line for a periodic function test.
Also, wet boat ramp.
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And when towing space shuttles.
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