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Two tires can be the same make and model, and identical size eg 235/45R18, but one is 94W, while the other is 98Y.
The 98Y is the higher load and speed rating.
I once ordered 94W, but 98Y was fitted.
I ended up using 98Y for a week, before the correct 94W was restocked from interstate and fitted.
I can tell you that the higher load and higher speed rating 98Y has a noticeably stiffer carcass with a knobier ride.
You can't use a lower than recommended load rating like 94 etc, however we can use a lower than recommended speed rating if we never travel at ridiculous speeds like 186 mph etc.
That seems to be the next step in diagnosis. What are the steps in fixing the sensor?
The sensor is non-serviceable outside of replacing the valve stem and o-ring. You could probably melt the epoxy that encased the battery but it probably damage the sensor itself.
If you have access to a techsteam machine, you could get the values and see which sensor is not transmitting data.
Maybe a tire shop has a tool that can "scan" each sensors for a frequency. See if it's transmitting or not. There's nothing you could from a DIY stand point.
You don't NEED to get it from Lexus. Lexus gets their TPMS sensors from a 3rd party too (i forgot whom).
Just get a good set of quality sensors and you should be good to go. It is up to you though.
I've ordered cheap sensors on ebay and ran them for a few years (no problems). These are actually hit or miss though. I paid $20 for a set of 4, and I have a friend who owns a tire shop, so it was no problem for me to take the risk.
They're actually just sitting on my 20s in the garage right now, since i'm not driving on the 20s anymore.
01-23-18, 09:04 PM
