ahc failure

Dear all! Greetings to everyone, I'm writing because I'm really struggling with a problem with my LX. One morning, when I left, the right rear seat was low, and when I selected the option to raise or lower the suspension, it didn't do anything and was stiff. After moving it up or down several...

I'm almost ready to push the buy button on an "ACH Delete" system and I really don't want to. For background I have worked on my AHC extensively and have already done the following things. 1. Replaced globes 2. Balanced AHC pressures by adjusting torsion bars and adding heavier rear springs...

Hi All, long time lurker, first time posting. I have a 2001 Lx470, roughly 230k miles. Love this truck and taking on longer trips with family/friends. Recently had I sitting for about 2weeks, avoiding the salt and snow on roads in NE. Had some snow drift built up that I decided to drive-thru...

Yes Another AHC post I bought a 1999 LX470 about a month ago and everything was great until it wasn't. Seemingly overnight the rear end had dropped all the way to low and while driving I noticed that the ride quality was getting worse and worse and the back end felt like I was riding on the...

Hello all, thank you for welcoming me into the community. I have a 2007 LC with AHC and the rear middle AHC line seems to have sprung a leak. I am now weighing my options in regard to what to do next. I am leaning towards doing a standard suspension converse as I haven’t found a mechanic...

Hey guys! I'm new to the forum. Just bought a 2004 LX470, pearl white, 180K on the odo. I knew it had AHC issues before the purchase. The interior and exterior are in pristine condition. It has some rust issues on the chassis which I assume is the issue with the AHC. I would like to trace and...

Last month a rear shock burst so we replaced it and refilled the sytem with synthetic dextron until our AHC ravenoil arrived. The truck re levelled itself after install and all was well until we started towing and the dreaded off sign started flashing and the ride was un level. We then decided...

I have never seen this AHC issue posted anywhere on mud. My AHC system is in working order, but sometimes it goes out of order My two out of order scenarios are All the lights turn off - L,N,H,Off - high adjustment does not work in this mode but ride quality is very smooth It is stuck...

My v8 lc100 is bottomed out, OFF light flashing and I have 2 active codes C1732 and C1736. Car was left to sit for a year, been in rain so I think humidity might have damaged cables but all appears good. Techstream is not working becuase of the cheap ebay cable but I have another OBD2 Diag...

The amount of posts here about AHC failure has led me to believe that this is an expensive component that is not necessary and can be easily sidelined. Note I work my cruisers in rough environments and the simpler the better

2019 LX 570 with 24,000 miles. I have experienced this more than 5 times in the last year alone where I'll come to a red light, come to a compete stop, with my foot on the brake the rear end of my truck will drop. There is no indication on any dash. I know for a fact it's dropping because feel...

Ok for all 200 gurus. car is low KM, BC, Canada. not a single rust. always dealer maintained and 96Km , not miles took it to lexus dealerfor oil change/ brake fluid change, diff flush etc. AHC worked good and I always "exercised" it . not a single code on the dash. friday afternoon dealer...

Hi All, 2011 LX 570 owner for about 6 months now. A few weeks ago, I got the 'Check ACH System' light and my ACH height went to Low and stayed there. Called my local mechanic, made an appointment (he was a month out at the time) for this Wednesday. Got sick of waiting, did a little research and...

Hey there! With some guidance from users here and a friend, I was able to diag my AHC system and found the culprit. It’s one of the hoses that comes out of the shock. One of the users on here “MycoManiac” made a very nice offer and idea of sending one of his used take offs. But just in case he...

Hey Guys, Just bought a 2000 LX470 with 263K miles and wanted to baseline all the fluids. I picked up some AHC fluid from two different Toyota dealerships (Magnusson's in Palo Alto, and Capitol Toyota - CA San Jose) as it was really hard to find. I did the flush following PADDO's method along...

Just picked up a 2000 LX470 with 142k mi. There were not records of the AHC fluid being flushed in the past. The fluid was a little low in the reservoir and dark in color. Before the flush I performed the health test, but first I added some AHC fluid to get it to the right level in the...