Hey Guys, recently installed two new Schrader tpms sensors on my 16 GSF and the digital pressure read out does not show any reading. The tpms light is not on. These were brand new Schrader 33700 blank sensors. Discount tire twice to program the car info to the sensor and then upload to the car. Any suggestions why it is not working? The front two sensors are stock and the rear are the new sensors on my spare wheels. Discount tire said it working because the tpms light is not on but they don't know why the digital tire pressure is not working.

 

Those sensors are not compatible with the system. I had the same experience, and I had a shop put on tires two years later, broke a sensor, and just replaced it without telling me. As soon as I started the car, I knew exactly what happened. They don't understand these cars, and their "compatible" sensors do not work with our cars. I ended up buying all new sensors the first time it happened, and I had three spares the second time it happened.

We would all be wise to tell the tire shop before they start, if you break it, you'll be buying a new sensor from Lexus, not a "compatible" and the statement the light is off so it's good is totally foul customer service. It wasn't broke when it went in and now it is clearly broken. Stand your ground and make them fix it.

 

I believe my car has aftermarket sensors in it as well and the pressure readouts work sometimes and not others. The low pressure warning will still activate when tire pressure is low in one of the tires. Good enough for me, but I do believe that it's due to the aftermarket sensors. I will get OEM ones next time I get the tires replaced.

 

Thank you both lobuxracer and cyfi66. Full disclosure i bought these for amazon because i needed them quickly. i ended up putting them on extra gsf rims i had sitting around this way i have spare tires. I wonder if its because these were blank sensors vs the aftermarket sensors that are programmed to specific vehicles. In the past i bought the 'OEM replacement sensors' that are preprogrammed for my wife es350 from Rockauto and those work fine, including showing the digital pressure. I will take lobuxracer advise and get from lexus. i have a relative that works at Lexus and hoping to use his discount. Thanks again for the prompt feedback! i love being able to see the tire pressure reading as i use that as a gage for tire temp and can push a little harder especially this time of the year in MN where traction is limited in the cold mornings.

 

Sensors are not "preprogrammed." They have a digital code the system reads to identify the tire. Some systems read the codes and will update, but the GS F absolutely will not do this. The sensor codes need to be written into the system for it to work.

The easiest way to determine if the sensor is working correctly is to see the tire pressures when you key on the ignition. If you get bars instead of pressures, the sensors are not fully compatible with the system in the GS F. Some of them will generate a number after a little while, but again, they're not working as the factory intended.

I wish I knew of a 100% compatible sensor that didn't cost a fortune, and yes, I have an Amazon set as well collecting dust on the shelf because they don't work properly.

 

Understood what you are saying . To clarify. What I mean by pre-program is these blank sensors must first be-programmed to the make, model and year of the vehicle but not to the specific vehicle. There's even a tag that comes with the sensor that says these are blank sensors and make, model and model year must first be programmed to the sensor. So these require one additional step versus the other type which I've purchased before and can do with my TPMS tool where you just have to activate and upload the code to the car. I watched the tech do both steps. I bet if I bought the other type like I did for my wife ES 350 it would have worked. But I'll just take your advice and go to the dealer cuz I don't want to do this for a third time.

 

I had a catastrophic flat on my LC that damaged the wheel and disintegrated the TPMS sensor. I replaced all my wheels and tires. For the sensor that Discount Tire replaced, I don't know what they used, but it's working flawlessly. I also replaced all four sensors in my past ISF, due to age, and bought them from Discount Tire; again, they worked without issue.

Lou

 

A programmed sensor and sensor being programmed to the ECU are 2 different things.

 

This is correct. Blank sensors need to be placed in the correct mode and it will also create the ID.

 

I have the same issue, but with genuine sensors. They used to work and provide a reading, but now they won't provide reading and there is no light on.
They're on aftermarket wheels, and I took a pic of the sensor IDs before the tires went on. I don't think it's batteries since batteries last supposedly 7-10 years.

 

Hey Ratedf, I just installed brand new OEM Lexus sensors this weekend and they are working fine. I think it depends on the scan tool. They guy that did it for me first selected 'low-line' data mode on his scan tool as it give him two options after he selected GSF. he had to redo them at high-line data mode otherwise the car will not show the digital read out. Maybe this is your issue. I had to Google the difference between high and low line mode for tpms.

 

What part number did you use? There are lots of OEM Lexus / Toyota sensors that will turn the light off, but only a couple that will actually show pressures.

 

Only one comes up for me when I search for GSF and it's 42607-30060 at Bell Lexus for $59.59 which was slightly cheaper than what I paid for at my local Lexus using employee someone discount. My local Lexus price was around $160 for the exact sensor.

 

42607-06020. They used to show actual pressure, now it's just light off.

 

Hi, quick question around the discussion of tpms sensors? How do we know which OEM sensor actually works? I have a 2013 Lexus ES350 (in the USA), and bought these from rockauto (https://www.rockauto.com/en/moreinfo...choice=0-0-0-1). Will these be fine?
Also, i did not realize these need to be programmed before installing them in the tires? Can the sensors be programmed after installation in the tires? ( i dont have the ID's, will any tool read the IDs?)
Thanks