Overactive AHC 2013 LX570 (1 Viewer)

[Jeppers]

I have noticed on our 2013 LX570 with 145k that while driving on the interstate or any distance that the AHC will slowly raise then drop and go back to neutral. I seems to do this about every 10 minutes, and even does it while towing a 7,000 lb boat. I have changed the fluid and pressures were within range and it is completely stock. Any ideas?

 

[one4x4dad]

I have noticed the same issue (2009 LX570 85k miles). It will just randomly raise/drop 1", it also happens when cresting a hill for some reason, but at an odd time. Its hard to explain.

 

[TeCKis300]

Not sure if you're talking about an actual issue or perhaps that AHC lowers height at FWY speeds at about 65mph? Here's what the system should be doing.

 

[Jeppers]

That could be, but I think I have noticed it with the cruise set at 75 but will check it this weekend, @TeCKis300 that is great info.