Cheap tool to program wheel codes
Instructor
Joined: Jan 2016
Posts: 1,193
Likes: 416
From: IL
I had thought that you needed to plug the info into the correct wheel position, but read elsewhere on this forum that the car doesn't care, just as long as it has the codes in the ECU.
So I did an experiment when I put my winter wheels on this weekend, since I have a square setup for the winter tires, I rotated the wheels front to back (directional tires, so can't go side to side).
This morning I just uploaded the winter codes into the ECU, without changing their locations from last season, and 'presto-change-o' the tire PSI's appeared on my dash display. The car is happy.
Now I'm going to double check tonight when I get home, and lower the pressure in one tire, to see if it shows in the correct position, but I suspect it will.
So I did an experiment when I put my winter wheels on this weekend, since I have a square setup for the winter tires, I rotated the wheels front to back (directional tires, so can't go side to side).
This morning I just uploaded the winter codes into the ECU, without changing their locations from last season, and 'presto-change-o' the tire PSI's appeared on my dash display. The car is happy.
Now I'm going to double check tonight when I get home, and lower the pressure in one tire, to see if it shows in the correct position, but I suspect it will.
Yes! The lowered tire pressure was reported on the dash display for the correct wheel position. Guess they didn't want to discourage owners from rotating their tires.
Thread Starter
Pit Crew
Joined: Jun 2018
Posts: 151
Likes: 10
From: ontario
nice! Which year and model is ur car? Dealer told me one that “newer” model requires the location of tires.
Lexus Test Driver
Joined: Feb 2017
Posts: 6,260
Likes: 1,752
From: Richmond Hill, Ontario, Canada
I highly doubt that in the last year or two of the model life that Lexus would revamp the TPMS system so that it requires location now.
They have such a simple and effective way of doing it now, I can't imagine improving on it from a physical standpoint. They can detect all 4 sensors using only two receivers...I doubt they can reduce that to one receiver.
I think everyone would like if the system can "auto-learn" the sensor ID codes, but that's a programming design that could be changed, not really a flaw of the system.
Instructor
Joined: Jan 2016
Posts: 1,193
Likes: 416
From: IL
Yeaaaah riiiiight!
I highly doubt that in the last year or two of the model life that Lexus would revamp the TPMS system so that it requires location now.
They have such a simple and effective way of doing it now, I can't imagine improving on it from a physical standpoint. They can detect all 4 sensors using only two receivers...I doubt they can reduce that to one receiver.
I think everyone would like if the system can "auto-learn" the sensor ID codes, but that's a programming design that could be changed, not really a flaw of the system.
I highly doubt that in the last year or two of the model life that Lexus would revamp the TPMS system so that it requires location now.
They have such a simple and effective way of doing it now, I can't imagine improving on it from a physical standpoint. They can detect all 4 sensors using only two receivers...I doubt they can reduce that to one receiver.
I think everyone would like if the system can "auto-learn" the sensor ID codes, but that's a programming design that could be changed, not really a flaw of the system.
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1WILLY1
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Jul 27, 2010 08:51 PM