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Marsflex TPMS Sensor 42607-33021 is a pre-programmed, direct replacement sensor compatible with a wide range of Toyota, Lexus, Scion, and Pontiac models. Operating at 315MHz, it delivers precise tire pressure monitoring with ±2-3% accuracy and features a durable battery designed to last up to 8 years. Crafted from high-quality ABS and alloy steel, it withstands extreme conditions up to 93°C. This set of 4 sensors offers a cost-effective, OEM-grade solution with easy installation and a 1-year warranty, empowering drivers to maintain optimal tire safety and performance without costly dealer visits.








| ASIN | B092HXSBGZ |
| Best Sellers Rank | #6,323 in Automotive ( See Top 100 in Automotive ) #14 in Replacement Tire Pressure Monitoring System (TPMS) Sensors |
| Brand | Marsflex |
| Brand Name | Marsflex |
| Customer Reviews | 4.2 out of 5 stars 1,802 Reviews |
| Included Components | 4 tire pressure sensor and 1 user manual |
| Item Dimensions | 2.87 x 2.48 x 1.06 inches |
| Item Weight | 0.2 Kilograms |
| Item dimensions L x W x H | 2.87 x 2.48 x 1.06 inches |
| Manufacturer | Marsmotor |
| Material | Acrylonitrile Butadiene Styrene, Alloy Steel |
| Material Type | Acrylonitrile Butadiene Styrene, Alloy Steel |
| Measurement Accuracy | +-2% to +-3% |
| Measuring Range | 15 to 65 psi |
| Model | APSP07004A-F-YS |
| Mounting Type | Flange Mount |
| Output Type | Push Button |
| Part Number | APSP07004A |
| Sensing Distance | 32 Feet |
| Smart Home Compatibility | Not Smart Home Compatible |
| Specific Uses For Product | real-time monitoring the tire pressure |
| Style | Modern |
| Style Name | Modern |
| Upper Temperature Rating | 93 Degrees Celsius |
| Warranty Description | 1 year after-sales service |
S**Y
Marsflex work, but for how long???
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.
D**Y
Really nice quality
Really nice product everything works great I like it
K**.
Don't pay dealership prices for something not as important...
Works perfectly for my 2006 Toyota Rav4, this will help save a ton of money compared to OEM. Dealership even programmed it for me!
M**D
worked great
Worked great in my 2013 RX350.
G**E
Only 3 of the 4 sensors worked-UPDATED
Would had been a five stars because they are preprogramed for the car. Just need to install and relearn.... I bought and installed all four sensors...(two out of four sensors in my 2014 Prius went bad). However, one was not reading the tire pressure correctly, reading 20 psi when the tire has 35 psi. So, TPMS light stayed on. Had to reuse/reinstall one of the old sensor, relearned and now working, but with one old sensor...praying the battery will last. UPDATED: This review is updated to 4 stars because the seller reached out to me immediately and offered to ship me 2 sensors as replacement for free. I received the shipment in 2 days.
V**V
Works with my 2008 gen2 Prius
Works with my 2008 gen2 Prius
C**S
Great seller!
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.
P**G
It works and appears to be high quality.
I was skeptical about the quality of this but I decided to try it and it installed easily and appear to be high quality and had no issues after programming it into the car. Please note that you do have to know what you're doing to install these things. You don't just install it and hope it works. You need a tool to program it into your car. In fact this work better than the more expensive unit that I have purchased previously and I like it so much more. The other one doesn't actually activate until the tire starts rotating so the light on my car stays on for a while until it runs for a little bit while but this one works immediately. I have no idea how long the battery on this one will last but if it can last for at least 5 years I would be very happy for the price I paid. It is so much less expensive than the other brands that I won't mention here.
に**が
レクサスGS GRS191に無事接続
レクサスGS GRS191に無事接続出来ました。
F**X
Value for money products
Value for money good easy to program in the car
U**A
no communication from internal WIFI module on these units.
I have ordered these and have them installed. None of the scanners are detecting them after the installation. Going back and fourth with Amazon and the seller was waste of time as no resolution or exchange can be provided.
L**S
Excelente
Los instalaron en mi Corolla 2011 y funcionaron bien. Espero que la duración sea buena. Gracias.
R**N
Good quality at a fair price.
I had these installed on a 2008 Lexus RX350. They work great, without any programming issue.
Trustpilot
1 day ago
3 weeks ago