If your LX-470 has adjustable height , the problem is the accumulators for each wheel shock are low/flat. Go to 'activesuspensionsystems.com' and read all about it and what to do.
LX470 AHC automatic Height Control.
I have the same suspension system problem as several others, including lexi98. The car rides like a buckboard; even though one is on the highway. The car will even tilt to one side. The car sits very low and the height will not come up to the "N" level and stays in the Low position. The "ACH OFF LIGHT" keeps flashing. Sometimes the car will come up a bit, but then goes back down. If the light says the car is in the "N" position, it is NOT. It is in the low position. The car does not come up even when one is at speed.
This suspension system failure is an "extreme safety hazard". These cars should be RECALLED before someone gets killed.
Just took out the ahc suspension and put in Strutmasters shocks and springs. I highly recommend doing this. You will find the diagnostic system for the electronic suspension is poor. Example: my front height sensor (300 bucks parts, 800 parts and labor installed) was not diagnosed until they tried to manually adjust the height control links for wheel alignment. The sensor is a potentiameter and if you know anything about those many times when they break they stop adjusting resistance...not an open circuit which is what the computer in the LX470 looks for. Engineering wise there is no real way around this so the LX470 is still a well engineer vehicle. Somethings require humans to get in there an check out....this is expensive and can lead you to replace a sensor 800 bucks then find out accumulators are bad well those are 650 each parts only and your LX470 has 4 of them.
Strutmasters all 4 shocks and springs cost me 530 at my door. Took me a weekend and I had to cut out the old hydraulic shocks because of rust, and took my time because I do not really know torsion bars until now. Ride quality is great. If you want a lift kit go with ome from slee (1,000) I was tight on money and only need factory ride height so i went strutmasters. The other kit from the other brand has a spring helper on the shock....that would mean less torsion bar adjustment but I have no idea how it would be in terms of ride quality.