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2005 TPMS Disabled

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Old Dec 16, 2018 | 01:00 PM
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Default 2005 TPMS Disabled
When I purchased our 2005 LS430 several years ago, the owner proudly remarked that his mechanic disabled the TPMS system as it was more trouble than it’s worth. My wife now drives this car and she recently ruined a tire because she didn’t notice the tire pressure was low. She wants the TPMS system working.

I have no idea how it was disabled. There are no error messages. Does anyone know where I should start? Could it be as simple as a fuse?

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Old Dec 16, 2018 | 03:13 PM
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Originally Posted by ejthomp
When I purchased our 2005 LS430 several years ago, the owner proudly remarked that his mechanic disabled the TPMS system as it was more trouble than it’s worth. My wife now drives this car and she recently ruined a tire because she didn’t notice the tire pressure was low. She wants the TPMS system working.

I have no idea how it was disabled. There are no error messages. Does anyone know where I should start? Could it be as simple as a fuse?
I highly doubt he was able to disable the tpms it is abs based.
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Old Dec 16, 2018 | 03:15 PM
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yup, like 05ls430518 stated, there are no actual sensors in the wheels.
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Old Dec 16, 2018 | 05:21 PM
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Originally Posted by ebxgsxr
yup, like 05ls430518 stated, there are no actual sensors in the wheels.
I know that. But it is disabled. It isn’t working and there are no lights.
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Old Dec 16, 2018 | 05:23 PM
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Originally Posted by 05ls430518
I highly doubt he was able to disable the tpms it is abs based.
I know it is ABS based and though you may doubt it, it is disabled. I’m asking for ideas on how it was done.
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Old Dec 16, 2018 | 05:28 PM
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Originally Posted by ejthomp
When I purchased our 2005 LS430 several years ago, the owner proudly remarked that his mechanic disabled the TPMS system as it was more trouble than it’s worth. My wife now drives this car and she recently ruined a tire because she didn’t notice the tire pressure was low. She wants the TPMS system working.

I have no idea how it was disabled. There are no error messages. Does anyone know where I should start? Could it be as simple as a fuse?
You may need to use a Techstream to re-enable Low Tire pressure system.
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Old Dec 17, 2018 | 05:25 AM
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i would purchase Techstream from amazon approx. $50 top! but all my computer are MAC! no windows at home.
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Old Dec 17, 2018 | 11:22 AM
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Thank you gentlemen! I will explore the Techstream solution. If anyone can confirm this is the correct route or knows exactly what to look for, your assistance is much appreciated.
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Old Dec 17, 2018 | 11:50 AM
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shut up meg dark side
Last edited by JffGRY706; Mar 1, 2021 at 05:20 PM.
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Old Dec 17, 2018 | 12:38 PM
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Have you tried to push the TPMS button under the dash next to the smart key on and off button? Dont know if it will help but cant hurt.
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Old Dec 17, 2018 | 12:49 PM
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https://www.clublexus.com/forums/ls-...-location.html
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Old Dec 17, 2018 | 02:20 PM
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Originally Posted by JffGRY706
I've had a couple flats in the almost 6 years and the TPMS did not go off either time. Recently I had a slow leak and the leaky tire would go down to 20 psi from 32 and TPMS would not go off. How many people can say that their TPMS has successfully warned them that a tire was going flat? I do not even bother to set it anymore. sad
Our previous LS430 worked perfectly. Almost too good as the chrome rims had a slow leak and the the warning would appear regularly until I had the rims fixed. So I had plenty of practice with the reset button.
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Old Dec 17, 2018 | 06:06 PM
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Originally Posted by ejthomp
Our previous LS430 worked perfectly. Almost too good as the chrome rims had a slow leak and the the warning would appear regularly until I had the rims fixed. So I had plenty of practice with the reset button.
I’m dealing with this exact problem right now with my front two wheels. They lose air at almost exactly the same rate, it’s very strange. Anyway, how did you fix it? Take the tires off and sand the bead surface?
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Old Dec 17, 2018 | 07:14 PM
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Originally Posted by Peacebay


I’m dealing with this exact problem right now with my front two wheels. They lose air at almost exactly the same rate, it’s very strange. Anyway, how did you fix it? Take the tires off and sand the bead surface?
I paid a local rim shop to take off the tires and machine the sealing surface. Can’t remember what I paid, but it fixed the problem.
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Old Dec 17, 2018 | 07:16 PM
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Originally Posted by ejthomp


I paid a local rim shop to take off the tires and machine the sealing surface. Can’t remember what I paid, but it fixed the problem.
Damn, I might just buy new wheels soon then. I’ve always wondered how some 18-19” Volk TE-37s would look on this car
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