Probably same procedure as gen 3 but the TPMS module appears to be inconvenient to get to (so I didn't bother): anyone Knows where is located TPMS Module on Gen 2? | PriusChat If you can find a wiring diagram for it then you can be sure which wires to connect. Last TPMS disable I did was on a 2013 sienna, for which I couldn't find any information about disabling TPMS so I poked each pin of the TPMS ECU connector with a high-value resistor jumping from the power pin, until I found the one that satisfied the instrument cluster. Power pin I figured out with a volt meter I think.
For a couple years I have used the old standby, electrical tape on the panel. Not perfect, but hides the annoying light. The tires are checked regularly since it is always necessary to air up every couple months anyway due to seasonal temperature changes or upcoming longer trips. As a matter of fact, I am checking daily now because one tire was several psi less than others. Always something! Who can argue that the TPMS is a good safety device? Agree 100%. But I am loathe to break down the brand new tires to install, and not the thing I could have done at Walmart where I buy tires. So for now it is the tape!
I had to dissemble a lot of my dash to replace the evaporator core. It looks like the connector is the same for the Gen 2? Here is compared to this Gen 3 plug. Is the wiring different or should this work on a Gen 2 now that I'm under the dash?
My Tacoma has had bad TPMS sensors for several years, I was gifted a TPMS system and it works well, the sensors replace the valve stem caps and send data to the main unit. the main unit has a temperature reading as well as a PSI reading. Great all around and for off roading, I can see the PSI of all 4 wheels.
Hmm, so then you rely on the caps to hold pressure or am I not understanding how those work? Seems like it might be much more prone to failure that way.
I have a set, different make but same idea. Accuracy is pretty good, certainly better than the default Prius TPSM display. The set (caps, central display unit) cost less than replacing one internal TPSM sensor. The caps themselves never caused a leak, but have warned me about several slow leaks in time to get them fixed before they got worse (the road I live on is hard on tires). That's why I'm trying to figure out how to disable the car's internal Tire Pressure Monitor, and turn the dash light off. I'd rather use external sensors.
Unless there has been a new discovery, the Gen3 jumper trick does not work on Gen2. There was no known way to disable Gen2 TPMS except black electrical tape to mask the display. One trick I discovered was I used a big binder clip to put pressure on a spare OEM TPMS, and I used that fake reading to substitute for one bad TPMS, so basically I was monitoring 3 tires. See past threads. Another temporary trick is to reset the codes...it takes the system about 20 minutes of the car running to realize the readings are bad. If you only do short strips, the system never figures it out.
Ty Unfortunately I think my Tire Pressure Monitor Computer is bad. Techstream errors out when I try to open it. Maybe I should stop trying to be sly with jumper wires and just electrical tape like a sane person lol.
I covered the TPMS warning light with double sided tape on an Indian Head Nickle, I placed the nickle over the warning light. No more TPMS light...You can use double sided tape on a regular Nickle or Quarter to cover the light
It looks like u have to spoof data on communication line rather than simply pull up the voltage on a line. U would have to reverse engineer the communication with an oscilloscope or something and then mimic it with a microcontroller. Might as well just put sensors in a pressurized bottle... altho if u figure it out maybe there is some money to be made selling plug-and-play TPMS disable kits. TPMS module is right here. I tried jumping IG to each pin with 1k resistor and nothing happened.
Or you could find the LED that lights up behind the dash board and just cut one of the leads to the LED
Why not spend $45 on a set of sensors and register their individual serial numbers (ids) with Techstream or another scanner capable of writing values via the obd2 connector? Another ten years of no tpms light plus tire pressure safety. Don't make the mistake of installing the sensors without recording the ids.
This will be controversial but I don't care: I removed the TPMS LED from the dashboard while I was fixing the capacitors for the dash. I top off my tire pressure at the first of the month with a tire pump I bought on Amazon. Not interested in maintaining TPMS sensors when I already have this process.
