dc893

Over the last few days I've seen some discussion over the chassis codes and what they actually mean. I've seen it being disused that if the number ends in a 1 it is a JDM model. I think we all agree that it does not designate what year the car is. I strongly agree with a lot of members that it just designates air suspension, but have also seen people still claiming this is not correct either.

I was thinking if we had an organized thread on what code our cars have on them maybe we could clarify what it means. I am not trying to start a thread here to argue over what they actually mean or discuss that as there are plenty of other threads for this. I was not able to find anything that was really organized though.

If you don't know where to look it is located on the drivers door jamb tag. Please, DO NOT guess what code is on your tag. I would like to keep this organized and accurate, thank you.

If we could just post up some basic info we could find out what that last number might be. Hopefully we can get some clarification and not cause more confusion.
A) Year
B) With or w/o air--From the factory
C) JDM Celsior, U.S. spec, or any other Euro models. Just make sure to specify where the car was ORIGINALLY sold.
D) Chassis code

I can start with the 2 that I have owned
90
With air
JDM Celsior
UCF11

92
w/o air
U.S spec
UCF10

MattLS400

Great topic. I myself have wondered the same. My specs follow;


1996
with air suspension
JDM Celsior
UCF 21

Gene01

I think it would be simpler to post the most current hypothesis, and ask for any counterexamples.
My hypothesis (so far, no counterexamples have been documented in the fora) follows:
UCFx0 = Without Factory Air Suspension AND UCFx1 = With Factory Air Suspension.
However, at some point in time (I think with the introduction of the 2001 LS430) the UCF31 designation was dropped for the US market (no, I don't know why unless it was to generate conversation in future fora :-).
UCF31 = With Factory Air Suspension was retained for other markets; I believe we have documented examples from JDM and Middle-East markets at least).
I strongly agree with any poster verifying his information with actual inspection of the VIN plate on the driver side door frame. Too many people have guessed in the past.

dc893

Does make sense. I just want to see if we could get a final answer on this subject. I just thought it would be helpful to have as many post what they do have so everyone could see all of the results. So far it does appear that the UCFX1 is for the air, but that is only 3 cars.

Gene01

Additional confirming instances do not strengthen the confidence in the hypothesis since we already have quite a few.
However, just one counterexample would falsify it (assuming the car was not modified after it left the factory).
I don't see the need to collect more data other than any counterexamples.
The only way to get a final answer would be to get an official answer from Lexus.