KDSS - Is there an Aftermarket Repair Option

[Okusputokus]

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might be this one. he showed me a few months ago.

Right on, thanks!

 

[krazywake]

Right on, thanks!

Hey Okusputokus,

Fellow '14 Trail Premium owner here with the exact same issue. Clunking front kdss cylinder. I have icon socks with heavy springs for the steel C4 bumper up front. Thankfully all the cutting, mods, and bumper have made troubleshooting the kdss a bit easier. It's also worth noting that in trying to solve the problem, I have replaced all the easy to get to bushings and have since installed the Dr.kdss adapter plates and his manual override switch.

I'm in the same boat now where the dealer won't touch it and they said even just bleeding and repressurizing the system will cost $2k.

I saw your comment about recharging the system didn't solve your clunking cylinder either. So now I'm thinking replace it with a wiring cylinder and then do the bleed and repressurizing. And then (fingers crossed) now that I've added those adapter plates and some additional spacers in the rear, hope the problem doesn't return.

I'm curious where you landed with your troubleshooting/resolution?

 

[Okusputokus]

See my last post on your other reply - https://www.toyota-4runner.org/5th-gen-t4rs/287817-kdss-recharge-making-my-own-sst-2.html?posted=1#post3819444

 

[CutthroatSlam]

The KDSS system is brutal. $1000 option on a new 4Runner but $3000 to replace if busted.

But it eliminated nose dive and allows you to take a curve at 70 mph when the speed limit says 40 mph.

 

[02SE]

But it eliminated nose dive and allows you to take a curve at 70 mph when the speed limit says 40 mph.

Yep, much better on-road handling, better axle articulation while on trails, and rarely has an issue.

 

[dom42]

I’m cooking up an aftermarket version that’s full rebuildable , will come with 1-2 rebuild kits and is less likely to fail. Testing in the next 1-2 months.

Sent from my iPhone using Tapatalk

 

[Okusputokus]

Thanks so much for developing this, Dom! If you need a testor I'm happy to help. Also, please make sure the front bleeder valves are easy to get to

I’m cooking up an aftermarket version that’s full rebuildable , will come with 1-2 rebuild kits and is less likely to fail. Testing in the next 1-2 months.

Sent from my iPhone using Tapatalk

 

[toolguy]

just caught this thread, reading how several KDSS owners have problems with KDSS.

i have KDSS Trail, and was under the impression that KDSS is a fairly durable suspension system

yes, there are known owners with KDSS issues, but those tend to have high miles and/ or drive the off road path regularly.

for those of us with KDSS 4Rs.

• Stayed with Stock Build
• staying on Pavement

is KDSS still viewed as being durable performance suspension, or are problems NOW starting to surface regularly with KDSS 4R owners??

Trying to filter out what all is going on with the KDSS problems? are these problems with owners whom went Aftermarket Lifts/ suspensions or regularly trail driving their KDSS 4Rs???

 

[Okusputokus]

No good data for an accurate answer but I bet most who are having issues are lifted, have bigger tires, and regularly offroad. Lifting changes the geometry of all suspension components and stresses it in new ways that weren't tested by Toyota.

just caught this thread, reading how several KDSS owners have problems with KDSS.

i have KDSS Trail, and was under the impression that KDSS is a fairly durable suspension system

yes, there are known owners with KDSS issues, but those tend to have high miles and/ or drive the off road path regularly.

for those of us with KDSS 4Rs.

• Stayed with Stock Build
• staying on Pavement

is KDSS still viewed as being durable performance suspension, or are problems NOW starting to surface regularly with KDSS 4R owners??

Trying to filter out what all is going on with the KDSS problems? are these problems with owners whom went Aftermarket Lifts/ suspensions or regularly trail driving their KDSS 4Rs???

 

[toolguy]

okay, thanks for your opinion..

that what i figured, that Suspensions Mods and /or non factory sized tires etc, maybe problem drivers with these KDSS post problems


what about the OP for this thread?

is your 4R KDSS STOCK build, or do you have MODs with either suspension and/ or Tires on your 4R?

No good data for an accurate answer but I bet most who are having issues are lifted, have bigger tires, and regularly offroad. Lifting changes the geometry of all suspension components and stresses it in new ways that weren't tested by Toyota.

 

[honda250xtitan]

just caught this thread, reading how several KDSS owners have problems with KDSS.

i have KDSS Trail, and was under the impression that KDSS is a fairly durable suspension system

yes, there are known owners with KDSS issues, but those tend to have high miles and/ or drive the off road path regularly.

for those of us with KDSS 4Rs.

• Stayed with Stock Build
• staying on Pavement

is KDSS still viewed as being durable performance suspension, or are problems NOW starting to surface regularly with KDSS 4R owners??

Trying to filter out what all is going on with the KDSS problems? are these problems with owners whom went Aftermarket Lifts/ suspensions or regularly trail driving their KDSS 4Rs???

lots of offroad miles on ours, almost all with e rated 33's and 2/1" lift. zero issues. there are tons of guys who have no issues. the only people who comment are ones who do have issues. thats the nature of forums. I'm not going to start a thread about how dialed my setup is, however if i have a issue with say a dirt king upper control arm, i might start a thread.

 

[Okusputokus]

The only mod I haven't done is long travel

Definitely not stock, on 35's, aftermarket UCA, suspension, bumpers, winch, RTT, etc, roughly 6000lbs.

okay, thanks for your opinion..

that what i figured, that Suspensions Mods and /or non factory sized tires etc, maybe problem drivers with these KDSS post problems


what about the OP for this thread?

is your 4R KDSS STOCK build, or do you have MODs with either suspension and/ or Tires on your 4R?

 

[toolguy]

Perfectly said..

and good to hear that plenty of KDSS owners with Tires/ Suspension Mods with no related issues.

so just like everything else.. a few have problems and many more dont..

was just trying to get my head around this thread.

i was always under the impression that KDSS was durable, like the rest of the 4R..

thank you all for adding context into this thread to help alleviate concern for us other KDSS 4R owners.

lots of offroad miles on ours, almost all with e rated 33's and 2/1" lift. zero issues. there are tons of guys who have no issues. the only people who comment are ones who do have issues. thats the nature of forums. I'm not going to start a thread about how dialed my setup is, however if i have a issue with say a dirt king upper control arm, i might start a thread.

 

[honda250xtitan]

Perfectly said..

and good to hear that plenty of KDSS owners with Tires/ Suspension Mods with no related issues.

so just like everything else.. a few have problems and many more dont..

was just trying to get my head around this thread.

i was always under the impression that KDSS was durable, like the rest of the 4R..

thank you all for adding context into this thread to help alleviate concern for us other KDSS 4R owners.

the on highway manners you get with KDSS was worth the risk of a potential issue later on. that's how we felt when we made the decision in 2017.

PLUS now that DOM has brought some great products to market, its the best of both worlds. on demand "light" sway bar disconnect, improved sway bar geometry, etc.

 

[toolguy]

100% agree...i filtered Trail Edition with KDSS when i bought mine.

She drives perfectly. I dont have comparison as i havent owned a non kdss 4R.

What i can say is that she drives perfectly and handles corners and highway with confidence.

KDSS drive performance is perfect..it just works....

Now if only the TE did not have this two tone gray bumper thing going on (SMH)...

Dang bumper needs to be SOLID color paint

That two tone gray bumper is awful
.

the on highway manners you get with KDSS was worth the risk of a potential issue later on. that's how we felt when we made the decision in 2017.

PLUS now that DOM has brought some great products to market, its the best of both worlds. on demand "light" sway bar disconnect, improved sway bar geometry, etc.

 

[honda250xtitan]

100% agree...i filtered Trail Edition with KDSS when i bought mine.

She drives perfectly. I dont have comparison as i havent owned a non kdss 4R.

What i can say is that she drives perfectly and handles corners and highway with confidence.

KDSS drive performance is perfect..it just works....

Now if only the TE did not have this two tone gray bumper thing going on (SMH)...

Dang bumper needs to be SOLID color paint

That two tone gray bumper is awful
.

pretty easy to remove the valances and have them painted

 

[T4R_Canuck]

pretty easy to remove the valances and have them painted

Or let a trail "self clearance" them like I did on mine. Ended one run missing the front valances, with just the clips left hanging in the bumper. haha.

 

[Mursenary]

Hi,
2018 T4R owner here. Looks like my front KDSS actuator is blown- suddenly started leaning to the driver side, leaking oil, and KDSS light illuminating on the dash. I see a couple of used front hydraulic actuators for sale on eBay, but they came from Lexus donor vehicles. Do you know if they are compatible? The seller account pages say they are, just wanted to ask around a bit more before buying.
Thank you!
J.Y.

 

[Okusputokus]

They typically are, best bet is to get the PN for yours and the PN from Ebay and cross reference on a toyota parts website, if possible. Genuine OEM Toyota Parts and Accessories Online - Toyota Parts Deal is a good one

Hi,
2018 T4R owner here. Looks like my front KDSS actuator is blown- suddenly started leaning to the driver side, leaking oil, and KDSS light illuminating on the dash. I see a couple of used front hydraulic actuators for sale on eBay, but they came from Lexus donor vehicles. Do you know if they are compatible? The seller account pages say they are, just wanted to ask around a bit more before buying.
Thank you!
J.Y.

 

[Crikeymike]

Not that people necessarily want to remove their KDSS, but if you do end up needing to, we sell this rear KDSS delete bracket kit so you can weld on the brackets needed to run a stock rear sway bar.

And up front, you can mount a stock non-KDSS sway bar by drilling and tapping holes up there too.

Apache Offroad Rear KDSS Delete – Sway Bar Conversion Brackets
https://exitoffroad.com/product/apache-offroad-rear-kdss-delete-sway-bar-conversion-brackets/