Marsflex TPMS Sensor 42607-33021 Compatible for Toyota Lexus Scion Pontiac, Tire Pressure Monitoring Sensors for Camry Prius Corolla rav4 Scion Yaris Replaces 42607-33011 PMV-107J 315MHz Set of 4

These installed well on my 2012 Lexus IS 250. When logging the new sensors with the 2025 Launch Creader Elite, I ran into a trouble code on the Creader Elite. It said “ID registration failed due to a communication error with the ECU while in initialization mode. Terminate initialization by connecting TC and CG of the DLC3 for 30 seconds.” I had to contact AI for an interpretation and it told me "The TPMS ECU got stuck in initialization mode and isn’t responding properly. To reset it, you need to manually short two diagnostic pins — TC and CG — in the DLC3 connector (your OBDII port)." Here are the instructions: How to Terminate Initialization (Safely) 1. Locate the DLC3 Connector • It’s the same OBDII port under the dash where you plug in the Creader Elite. 2. Identify Pins TC and CG • Pin 4 = CG (Chassis Ground) • Pin 13 = TC (Test Connector) • These are numbered from left to right, top to bottom. • You may need a pinout diagram or flashlight to confirm. 3. Create a Jumper • Use a paperclip or jumper wire to connect Pin 4 to Pin 13. • Leave it connected for 30 seconds with ignition ON (engine off). 4. Remove Jumper and Retry • Disconnect the jumper. • Reconnect the Creader Elite. • Retry the TPMS ID registration process. Why This Happens • The TPMS ECU sometimes locks up during ID registration, especially with aftermarket tools. • Shorting TC and CG forces the ECU to exit initialization mode — it’s a safe, Toyota-approved reset method. I had to do the above "shorting method" twice, which was a chore for this fat boy to get down in the floor board to access the OBD2, and then plug the 4 new ID numbers into the Launch Creader Elite twice, but it all worked out. I hope all this helps someone else who has the same problem. Still a lot cheaper than paying garage over $500.00! Now lets pray the Marsflex batteries last at least 4 Years, if not, go with Denso. More expensive, but proven to last.

Work great, they are compatible with my 2005 Tundra and programmed easily with my Autel Programmer.

Perfect! Cecked before installation and they were good to go. Two weeks later and no issues or lights. THnaks!

The sensors work, but make sure that your valve stems are tightened. I see, they slightly lose air. If you don't take that step

Work good . Sensor already programed but some cars need to be use scaner to be relearn in ECU.

So it was time to replace my tire pressure sensors on my 2012 Prius V. After pricing it at the dealer, they told me they could do it for about $1200. I was about to just give up on it, but I decided to check here to see if they existed. I found these pressure sensors on Amazon for just over $30 for a set of four. The page showed that they would work with my car. Installing them of courses beyond what I could do at home. I checked with Costco since they installed my tires and asked if they could install these sensors. They said sure that would be $14 per tire. This was a no-brainer. Between purchasing the sensors from Amazon, and Costco installing them. The entire job was $87 parts and labor. Slightly better than $1200. They were able to scan and activate them and everything is working perfectly. Word to the wise… Avoid the dealer.

Walmart broke one of the sensors and replaced it with one of theirs and although it relearned just fine, the light continued to stay on. I ordered the four pack of Mars flex sensors preprogrammed for Toyota / Lexus and had Walmart replace the one they put on with one that I bought from Amazon and after the simple relearn procedure voila no more TPMS light! Very happy with this product so far!

UPDATE - seller reached out and sent 2 replacement sensors. Dealing with their customer support was a pleasure. Updated review to 5 stars. Sensors programmed fine to my 2016 4Runner but one is faulty and does not correctly read the tire pressure. It only reads 20 psi even though the tire has right at 35 psi. I have driven approximately 100 miles and it still is not functioning properly. I reached out to the Marsflex website customer support so we’ll see if they correct this issue. If the issue gets resolved I’ll update the listing otherwise be prepared to potentially receive a faulty sensor.