AHC fluid (LX 570) flush DIY help?

[SWUtah]

One of the LC in the 901th service bay having it AHC fluid changed at 7500 mile interval using an eye dropper. Just saying

 

[NLScooby]

Just to take a whack at the dead horse.....the AHC is obviously available in Japan as well. You can watch some youtube videos of demonstrations by Toyota and see the AHC system engaged.

I do find it funny (odd) that more 200 series are not sold in the US. But then now that I think of it, I don't recall a single advertisement (or other marketing vehicle) in the last 10-15 years by Toyota for the Land Cruiser. Anyone else see one?

 

[SWUtah]

Just to take a whack at the dead horse.....the AHC is obviously available in Japan as well. You can watch some youtube videos of demonstrations by Toyota and see the AHC system engaged.

I do find it funny (odd) that more 200 series are not sold in the US. But then now that I think of it, I don't recall a single advertisement (or other marketing vehicle) in the last 10-15 years by Toyota for the Land Cruiser. Anyone else see one?

Agree never. Same with LX570. The magazines even bang them for being dinosaurs and Toyota just turns a deaf ear. Why because they don't make these vehicles for the U.S. market. In the USA we want glitz and gizmos not something that is built to last generations.

 

[mutazs]

So any one figured the AHC flush method on the LX 570?
thanks

 

[Markuson]

Just

Agree never. Same with LX570. The magazines even bang them for being dinosaurs and Toyota just turns a deaf ear. Why because they don't make these vehicles for the U.S. market. In the USA we want glitz and gizmos not something that is built to last generations.

Just saw a TV ad for the 570 (with that hideous Transformers-style grill)...but only in combination with another Lexus model. Sort of a his & hers ad. Never seen one for the LC...ever. I think it's because it's too hard to showcase LC's true strengths. Ads love to spout about leg-room...cargo space...etc. Land Cruiser is "out-done" in those soccer-mom aspects by the likes of Sequoia... but the INTERNALS of the LC are second to NONE. Just hard to do a commercial that highlights it's internal prowess in 30-60 seconds...

 

[LCHardriver_02]

I would be interested in the flush, as well... even thought I will have it done at the dealer. Still under service warranty.

 

[SWUtah]

The suspenison on the 570 is way more complex then the 470. I would led not let anyone other then a Lexus master tech trained in this service touch my 570.

 

[CLHickman]

I believe this will probably be the same solution for the AHC on the LC/LX. There is a really good write-up and commentary about others experiences....AHC Fluid Change How To -- Need Input

 

[Redmdrider]

Hi all,
New member, owner of a new-to-me 2009 LX570. It's a high mileage truck.
Not all of us want to pay the dealer for maintenance, so I've also been researching AHC flush & bleed.
Best I can tell: some newer LCs also have AHC. The pump & reservoir is not in the engine bay; it's in the rear passenger-side wheel well, rear side. I know, crazy (but also so cool).
It appears that the system has a smaller reservoir. From what I've read, the bleed procedure is similar to the one in the LX470.
Once I garner the courage to do it I'll post pics....

 

[electro992]

I did this on my LX570 a few weeks ago. The procedure is basically the same as my old LX470 except the reservoir is now behind a trapdoor in the passenger rear wheel well. I wasn't able to pump the fluid out of the reservoir before bleeding, seemed like there was some kind of baffle in the way. The order is front right, front left, rear right, rear left. The accumulator is now behind a protective cover and is not referenced as a bleed point, despite having a bleeder screw on it. Used about 1.5 cans of fluid before everything started running clear.

 

[sknyfrnchguy]

So what kind of fluid does the AHC use?

 

[CLHickman]

@sknyfrnchguy...check the link I posted. There is a document on the first post that explains the process to not just include the Toyota part number for the AHC fluid but, what tools you'd need as well.

 

[sknyfrnchguy]

@sknyfrnchguy...check the link I posted. There is a document on the first post that explains the process to not just include the Toyota part number for the AHC fluid but, what tools you'd need as well.

Thanks!

 

[jenlain]

Changed the fluid last night on my 2010 LX. Found it to be easier as a 2-person job, but can be done by one person. Once we followed the lines in the system, we decided that taking most of the fluid out of the accumulator would be easiest and still get the job done.

• The car was on level ground and turned off with the suspension at "normal" height.
• We opened the flap behind the passenger-side rear wheel to get access to the AHC reservoir. There is only access to the fill tube. We decided not to try to drain any fluid from the reservoir.
• With the car off, we drained 6-8 oz. of fluid from the accumulator. I then started the car and let fluid be drawn back into the accumulator while my buddy monitored the fluid level in the reservoir and pumped more in to prevent it from going dry.
• We repeated this process several times until the fluid appeared to run clean through the accumulator.
• We then took some fluid from each actuator and found it was clean as well. We ran the car for a few minutes, raising and lowering the suspension level.
• With the car at normal height, we made sure the fluid level in the reservoir was near the max mark and then closed everything up.
• Took about 45 minutes total and used 1 can of fluid. Car has about 60k miles and the old fluid was in decent shape.
• Haven't noticed any change in driving characteristics.

 

[jblatl]

I have seen 100 series land cruisers with AHC and would be interested is it is standard on the 2016...