The AHC (Automatic Height Control) system in the 100 Series Land Cruiser and all Lexus LX470 can wear out over time. If your ride feels less plush than it used to or fails the graduation test, it's time to replace the accumulators.
This set will include
Genuine Toyota Accumulator Front 49141-60010 2pcs
Genuine Toyota Accumulator Rear 49151-60010 2pcs