There is a lot of detail in these posts because the title of your thread makes it easy for others to find and these problems with the Height Control Accumulator will happen more often as LC100/LX470 vehicles get older -- so the posts may help someone .....
The frozen remnant of the bleeder valve is likely to stay safely in place in the Height Control Accumulator (HCA) for all time unless efforts are made to dislodge it. The AHC system will continue to work just fine so long as the solenoid valve at the front of the HCA works properly when required.
The AHC system still can be bled via the bleeder valves on the Damping Force Control Actuators to which the ‘globes’ are attached. This will not be perfect but it is far better than not bleeding. Given enough discharge/recharge cycles – meaning multiple cycles of lowering and raising the vehicle which causes the AHC fluid in the HCA to empty and refill – then the old fluid eventually will be diluted by new fluid added at the AHC tank and as fluid is cycled out of the HCA and leaves the AHC system via the bleeders at the Actuators.
So unless there are other problems with AHC operation, dealing with the HCA and the broken bleeder is not urgent and can be left on the “when convenient” list.
Some past threads have mentioned repair using an Ezi-out to remove the stuck bleeder valve – the general idea is illustrated in this video but is not specific to the HCA:
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The point is that there really is not enough room to do something like this with HCA in situ on the vehicle chassis. Even if it this method was possible, great care would be needed to safely manage the release of any stored hydraulic pressure. For this reason, it would be better and safer to deal with the HCA and the problematic broken bleeder in a workshop after the HCA has been removed carefully and safely from the vehicle.
There are two pipes attached to the HCA – one from the AHC Pump to the HCA via the Attenuator, and, one short pipe from the HCA which runs over the top of the chassis rail to the Control Valve Assembly which is mounted on the inner side of the chassis rail.
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If the solenoid valve in the HCA is tight internally (meaning not leaky nor faulty) then hydraulic disconnection should not be difficult. It is worth checking the operation of the HCA solenoid valve while it is still in the vehicle as described in previous posts. If the valve is faulty or if the pipes are frozen or weakened with rust, then be prepared to manage a messy discharge during disconnection and take care of personal safety (especially eyes), also as mentioned in the previous posts.
Repair or replacement then can be considered.
Consider costs of ‘worst case scenario’: Replace Height Control Accumulator (HCA) and relevant ‘pipes’.
Cost: Replacement Height Control Accumulator – Part No. 49130-60010:
Toyota Parts Center Online | Genuine Parts & Accessories - https://parts.toyota.com/ (USA)
USD1.095.62 (free shipping, Dealer discounts)
Partsouq (UAE)
USD394.64 + USD79.43 shipping
Megazip (Singapore)
USD455.92 + USD105.24 shipping
Amayama (Japan)
Will not ship due to pressure content of HCA
LexusPartsNow (USA)
USD810.18 + shipping?
eBay (USA)
USD442 to USD514 + shipping
Cost: Replacement ‘pipes’ actually called ‘tubes’:
Go to
Height control (auto-leveler) for Toyota Land Cruiser UZJ100L - Genuine parts - https://toyota-usa.epc-data.com/land_cruiser/uzj100l/3704/chassis/4805/ -- another great place to identify AHC part numbers, including for Height Control Accumulator and pipes (Toyota/Lexus calls steel pipes ‘Tubes’ and flexible pipes ‘Hoses’). This site then directs to Amayama site for item cost and shipping cost, then can compare with other sources. For example:
USD146.37 48984-60022 Tube No. 4 + shipping cost, according to Amayama
USD 90.61 48981-60021 Tube No. 1 + shipping cost, according to Amayama
(Examples only – identification of actual parts needs to be checked).
The obvious point is that it seems very hard to make the ‘worst case scenario’ of replacing the Height Control Accumulator (HCA) and relevant ‘pipes’ add up to anything like USD5,000.