LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

Field air suspension controller (UCF21)

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Old 06-16-21, 09:11 PM
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JDMUCF21
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Default Field air suspension controller (UCF21)

I just ordered a Field air suspension controller from japan, apparently it plugs into the factory air suspension computer and allows it to basically set the car to non factory lower (or higher) modes. Anyone have any experience with these installing one? All i can find is roughtly translated sheets and some very vague install diagrams would love to speak to someone who has installed one or uses one of these on their car to see how easy or hard this install is going to be, seems pretty straight forward but better safe than ruining a car.
Old 06-17-21, 11:24 AM
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timmy0tool
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do you have a celsior? not sure if these air ride controllers work on USDM cars.

i believe they are installed in-line somewhere. you can always scan the diagram and Yamae (one of the moderators) can translate it for you!
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Old 06-17-21, 12:43 PM
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Originally Posted by timmy0tool
do you have a celsior? not sure if these air ride controllers work on USDM cars.

i believe they are installed in-line somewhere. you can always scan the diagram and Yamae (one of the moderators) can translate it for you!
Yes i have a 1996 UCF21 Celsior Spec C its posted other places on the forum. Looks like from what i have been able to translate so far i just need to remove the glove box to access the air suspension computer, plug it in and then figure out the set up. Once i confirm its working ill need to plumb the line through to a accessible place. put glove box back and should be good to go.
Old 06-23-21, 11:11 PM
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it was actually really easy to install, mine luckily came with the manuals and install instructions. I was able to sue google translate to set it up after install, overall happy with it. Takes a bit to air out and back up again but when it does damn its a beauty. and $87 for a controller to modify the stock air suspension sure beats a few thousand for new air system (for the time being)




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