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active suspension not working.

(1993 Lexus SC400)
in Good Hope, GA on April 15, 2009
hi my name is tony i have a problem with the active suspension
the nose of the car is sitting right down, and the rear is right up,i
had a mechanic check it out last month he didnt seem to know much about these cars, he said the compressor is ok , and he checked all the cusions there seems to be no leaks, after going through a series of illimination processes he gave up so when he left i sprayed crc on the height controllers on the front and the car started to level out , the only problem i had after that was that the font would deflate when the car was stopped for a period of time , but it would level out when you start the car again , but now the problem has come back again it wont level out again even withe the compressor running , the only thing i thought of is that the rear is up and its telling the computor ive reach my maximum height, any help would be appreciated, thanks tony. ps my zip code is 3064 AUST , it wuldnt come up on your screen,thanks.
Displaying 5 answers & 2 comments
Popular Answer
I didn't think the SC400 had the whole active suspension that the LS400 had. But working on a lot of the Lexus suspensions we don't see problems here in California with height correctors seizing up but I do see cars from the mid west and north east with sensor problems..
I looked at the LS400 ( my information didn't have suspension controls shown for the SC400) the system is pretty involved but with the information easy to diagnose problems. Is their a Lexus/Toyota independent repair shop in your area. There is a technical hotline called Autoline in Minnesota that will research a problem and for a fee send information and have a tech talk a mechanic through a problem. Great service but I think they only deal with professional garages. If your local garage can't figure out the problem they can call Autoline they advertise in all the trade journals. If you can't find the number or contact details I can forward them on to you.
on April 16, 2011
The 91-96 sc400 UZZ32 had active and only 873 exist. Problem lies with accumulator or valve body.
Valve body reseal is about 160 in parts, @6hours labour available as a kit from toyota.
Accumulators are now obsolete, Peter Taplin (aus), rebuilds these for all locations Ps the best car ive ever owned.
on February 25, 2012
on November 23, 2010
I have a 1999 Lexus LX 470 and my rear went out in my vehicle. The dealer told me it was going to cost me 3500-3800 dollars to fix it. That was way too much money. I went to and got a conversion kit and cost me under 1000 bucks. Saved me a bunch of money and now i have a lifetime warranty and dont ever have to worry about this again.
on July 17, 2010
FTI, the SC-400 NEVER HAD an active suspension.
on April 16, 2011
False check for UZZ32 sc400 soarer.
on April 16, 2011
When any of the struts drop after leaving for a while it generally indicates loss of nitrogen to the lower accumulator = time to rebuild, there is also a rebuild kit for the top of the strut too.
The suspension in this car was upward of 20k to fix, Good ol aussie tenacity refused to be beaten and now they can rebuiltd the suspension at relatively low costs. is a good place to start.
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