my car lx570 2016, have replaced 4 shock absorbers, changed ahc oil, and 4 ACCUMULATOR but the symptoms are still there, the ride is very bumpy, rough. Can anyone please advise me? 
LX 570 Super Bouncy Ride - No Fault Codes
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tell us about your tires and inflation pressure. can you post a picture of your door card?
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tôi đang sử dụng dunlop và 250 psi
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250 kpa? that's about 36.3 psi. If you have the stock Dunlop tires, lower to 230 kPa (33 PSI). It is also likely that you have air bubbles in your suspension fluid (maybe the reservoir ran dry when the shocks and accumulators were replaced?), and need to perform an AHC bleed to remove air from the fluid. If new fluid is difficult to obtain, you can reuse the bled fluid if it looks clean. Make sure to have fluid in the reservoir at all times. several thread on this site detail how to bleed, there are four locations near the accumulators, and a fifth position on the left side frame rail near the rear LCA behind a shield.
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please help me.
questions for the group:
do we know that proper OEM shocks AND springs were installed ?
could AHC be turned “off” maybe on the control switch?
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all are OEM, the up and down and off switches are working properly.
The OFF switch only effects auto height, not dampening.
Reasons I can think of for a rough ride, in order from least to most likely:
AHC ECU
AHC control valve
AHC Pressure Sensor? (not sure about this one)
Springs are too stiff (this would happen with LandCruiser springs, for example)
Faulty shock bodies (since they were replaced they are suspect)
Faulty globes (since they were replaced they are suspect)
Needs a bleed
Tire / Tires out of balance
Tire / Tires overinflated
AHC ECU
AHC control valve
AHC Pressure Sensor? (not sure about this one)
Springs are too stiff (this would happen with LandCruiser springs, for example)
Faulty shock bodies (since they were replaced they are suspect)
Faulty globes (since they were replaced they are suspect)
Needs a bleed
Tire / Tires out of balance
Tire / Tires overinflated
Zjohnsonua
SILVER Star
3psi isn't your problem. Hell, 10psi wouldn't cause this.
OP, there are reams of help in this forum already to help you get your truck back to baseline. Check out the "AHC Basics" thread at the top of the 200 thread list.
OP, there are reams of help in this forum already to help you get your truck back to baseline. Check out the "AHC Basics" thread at the top of the 200 thread list.
my car lx570 2016, have replaced 4 shock absorbers, changed ahc oil, and 4 ACCUMULATOR but the symptoms are still there, the ride is very bumpy, rough. Can anyone please advise me?
You've certainly done the basics to sorting out the issue. Accumulators are usually the culprit. Was there any change in ride before and after replacing the components?
Is there any error codes from the system?
If I had to guess, I think the root of your problem may originally have been the accumulators. I suspect an installation issue for what your experiencing now. Often, techs either out of laziness or are unaware - torque the suspension components while they are in full droop. Usually not a problem, but on a long travel suspension that is the 200-series, this can really bind the bushings at ride height, adding to spring rate. Enough that it would cause potential ride issues. I would as them to do a full untorque and retorque of the suspension while the vehicle is on the ground. This includes the lower control arm (LCA) main bushings, sway bar bushings, and shock bushings. With a re-alignment.
Hi, sorry, I know this thread is old, but did you manage to solve the problem? I'm in the same situation.
