Denso 550-0103 TPMS 315-MHZ Sensor for Toyota/Lexus with Factory Alloy Wheel Options. (THIS SENSOR MUST BE PROGRAMMED BEFORE USE), Black

Took some time to finally get my TPMS flashing error light turned off, but here is what caused it and how to fix:1) Caused by a low battery on one of the TPMS sensors. Get 4 new ones! You only want to do this one time, why bother trying to find the 1 that went bad, my OEM sensors lasted 14 years before I had to deal with this issue. These Denso OEM TPMS from Amazon are a great price (read reviews about counterfeit units not having a raised/embossed QR code. The ones sold from Amazon are legit, new design with the cloudy epoxy visible on the back. Take pictures of their id numbers before installation!2) America's Tire Company installed them for $20 a tire and verified they could read their ID from the handheld scanner prior and after installation.3) Once installed, there are ways to wake up or activate these sensors either by draining the air on each of your tires to 20psi and then quickly back up to operating pressure or using a handheld TPMS tool. I drained each tire down to 20psi and then filled them back up one by one first.4) Then I loaded up Techstream software with the Car ignition mode or engine on. Connect to your vehicle with your $40 mini OBD connector, see youtube for info on this process and software installation. Select TPMS and then Utility on Techstream, then go through the ID registration process for the "Main" selection in techstream for each of the sensors, the ID numbers are 7 letters/number combos on the sensor. There is a 5 minute countdown timer in techstream.5) Here is the trick: Assuming you don't have another set of 4 tires that you swap in the winter or for whatever with a different set of TPMS sensors, program these same new ID numbers in techstream for the "2nd" selection of tires in techstream.6) Now go back into techstream, TPMS section, select "Data list." You can then view a live table to verify your TPMS id codes have been registered and their tire inflation pressure. It may take a few minutes for the pressure to display, but if the IDs registered were correct you will begin to see the inflation pressure value in the techstream table.7) Now to get rid of that pesky Check Tire dash light on your car. Read Console Codes in Techstream. If you get a C2126 (Transmitter ID not received (Main) code, verify you can read the IDs and the tire pressure in the live Data option of techstream, if the ID is incorrect you won't be able to see the tire pressure and it will throw this code out. IF you get code C2127 (Transmitter ID not received (2nd) code, the trick is assuming you completed item #5 like I outlined above, you need to select the tire pressure display setting on your car's indicator display screen that is above your steering wheel. The way to select it is using the left/right rocker button that is to the left of your steering wheel with the round center select button. Now go to Select Tire push the center button to select "2nd" and then go to the Tire Pressure Set Initial Option, and push the center button. Look back on your computer screen and you should see the live techstream window also show the "Initilization Switch" go to Value "On". Do the same for "Main" for good measure. After doing that my pesky Check TPMS error light went away immediately and techstream didn't pull any more of the C2127 trouble code for the missing "2nd" set of tires registration IDs.A little tricky and some hoops to jump through but you will save a lot of $$$ if you can pull this off!Some cars may have a sensor in the full size spare tire, don't forget about that. Mine does not.

Application was 2010 Camry. I had a local tire shop mount tires I bought from them, but I supplied the TPMS. If you buy the TPMS from these particular guys, its basically like buying another set of tires. They each were north of $100.00 installed. Buy supplying these to the shop I saved a lot of dough. While these are preprogrammed in the factory, there are still a few registration steps the tire guys have to do to get the car's computer to recognize the TPMS units. My registration went off without a hitch.

TPMS Amazon reviewI write this review to try and clear up some of the timidness I had when purchasing these sensors. I’ll admit, I wasn’t sure if I could get these sensors to work using the tools I had when I ordered them. In short, THEY WORKED. I installed these on a 2008 Scion tC with 168k+ miles and was able to wake them up and write them to the ECU using an Autel TS601. In theory, you should also be able to use the Autel TS501 as well since it has the capability to write the new sensor IDs to the ECU as well. There is a review by Paul on March 8, 2019 that describes the authenticity of these sensors. When I took out the stock sensors, they also had “Pacific” on them. The tC uses a low profile tire and since mine were worn out and I don’t have a tire changing setup, instead of breaking the bead I did the “easy” method and cut a hole in the sidewall big enough for my hand and replaced each sensor. I also torqued them to the required value printed on the sensor (4 N-m). I believe it was an 8mm socket. With the sensor replaced, I took the wheels (off the car) to Discount Tire to replace the tires. Once I picked them up, I put them back on the car. There is a red piece of paper that comes with each sensor that gives instructions to wake the sensor. I didn’t have one of the tools mentioned so I used the deflate air method. To wake each sensor, I took a pin and pushed in the valve stem to deflate the tire and counted for 6 seconds. The instructions say 3secs but I did 6secs just to be sure. Not that I did not remove the valve, I just pushed it in as if the tire was overinflated. After 6secs, I stopped deflating and immediately triggered the sensor using the Autel TS601. The stock sensors triggered and reported their data on the Autel in 2secs or less whereas these sensors took significantly longer to respond. One sensor took ~20secs. After waking up and reading all the sensors, I plugged into the OBDII port and wrote the new sensor IDs to the ECU using the Autel. The Autel simultaneously clears the TPMS warning light during this process so there is no requirement to drive X distance for Y amount of time at a minimum speed of Z mph. You simply write the new sensor IDs to the ECU and you’re done. Don’t forget to reinflate your tires after deflating them to wake up the sensor.