Lx570 leans 2 inch after parking for hours.

[Falmin]

Hello friends, I'm completely at loss financially. When I bought the car (lx570 2008 - 200K/km), rear was bouncing, since then I have changed these parts,
-Globes
-Shocks
-Most bushes
-All mounts
-Leaking pipe AHC
-Many flushes
-20mm rear spacer
Still I have problem with AHC.

No.1 When parking for hours, the right side of the car leans down and left remains up. Like 3 inch difference. Normal should be 1 inch.

No.2 At factory height, the car is rough and bouncing, hitting bump stops at speed humps. So I must increase the height by adjusting sensors, it becomes stable but too rigid.

I really don't know what to do at this point. I cannot remove AHC or sell the car off since I've spent a lot. Please give me some idea, I have tech stream but it shows no codes or anything much. Thank you

 

[GrouchyTech]

Have you taken it to Lexus?

 

[Heckraiser]

When I broke an AHC sensor fiddling with it, the suspension dropped completely to the bump stop on that corner. Bought a new (used) sensor and bolted it up, all was fixed. It would be odd to have two broken sensors, but it's something to explore.

 

[bloc]

When I broke an AHC sensor fiddling with it, the suspension dropped completely to the bump stop on that corner. Bought a new (used) sensor and bolted it up, all was fixed. It would be odd to have two broken sensors, but it's something to explore.

That would apply when the ignition is on too, right? Not just when off?

I wonder if one of the valves that controls where fluid goes within the system even when it's off is failing.

 

[Heckraiser]

Yes, ignition on or off. It was weird, when I started the car up, it would try to lift the offending corner to the appropriate height, but not quite make it there. Go for a drive around the block and by the time you get back home, it's riding the bumpstop. It wasn't a total AHC failure on that corner (i.e. the system still tried to do something, but it didn't know what to do and just gave up).

 

[Falmin]

My issue is a bit different, when the engine is on, all corners look even, after turning off the vehicle, right side will start to lower within 5 to 6 hours. When I restart the car, everything goes back to normal. Faulty sensors mess the ride even when the engine is running. But in my case, car leans only when car is parked for hours. I did install 20mm spacers in the rear. Didn't do much.

 

[GrouchyTech]

It sounds like you’ve spent a lot of money shotgunning parts at it. It would be worth having it properly diagnosed.

 

[Falmin]

It sounds like you’ve spent a lot of money shotgunning parts at it. It would be worth having it properly diagnosed.

I did take it to multiple places but they keep changing things and not solving the issue. The Toyota dealer is very different here, they'll usually replace most of the parts all together instead of finding the cause. Which can cost 5x more