Display now shows individual tire pressure?

If you can make "addition" into equality or less? Good for you. It would mean more complication in the form of software and then also an on the dash way of viewing the information.

 

Toyota chose to implement the minimally acceptable system. Sure, it indicates A tire is low. Would be helpful to indicate WHICH ONE so one doesn't have to keeping checking until it is found. I don't know if it is "lazy" or "cost". If it's cost then replace one of the useless graphs or the "Prius" splash screen with useful data.

If Chevy can put it on a Malibu that sold retail for less than $18000, IMO, there's no reason Toyota couldn't in a Prius.

 

I have individual tire pressure readouts on my 16 year old Corvette. Of course, in 1999, the car listed for $40K. To be honest, though, when I have my gauge out checking the Prius tires, I also check the pressures on the Vette.

 

It looks like part of the NAV system...so does anyone have a CAR button on the left? Also, what measurement is 230/160?

 

Display Audio is the cheaper of the two audio systems. I have this in my 2012 c, but it shows only the idiot light:

"As an added safety feature, your vehicle has been equipped with a tire
pressure monitoring system (TPMS-tire pressure warning system) that
illuminates a low tire pressure telltale (tire pressure warning light) when
one or more of your tires is significantly under-inflated."
​

But I believe the car system was revamped for the 2015 models, so perhaps the individual tire readout is now a standard feature.

The units shown on the display above are kPA - kilopascals, the metric system unit of pressure.
Pascal (unit) - Wikipedia, the free encyclopedia

 

As an old motorcyclist I think real time tire pressure info is critical to safety. I know other bikers who have purchased aftermarket TPMS systems to have that info available. Having had tires blow out or go flat slowly while biking,I would do the same as the bike gets uncontrollable quite quickly.

 

The 2015s must have been revamped. The older TPMS just had each tire's sensor "coded" to your car and a couple of receivers picked up the signals and sent the info to the ECU. That way, if you rotated the tires, the ECU would not have to distinguish which tire was low on the warning light, just that one of your tires was low.

 

Whether it was coded or not I would still love to see the pressure of each tire. Of course knowing the pressure of a specific tire would be better but if one showed low I'd be out there with a pressure gauge to find it, even in Minnesota coolness. I already use the Torque Pro App to monitor RPM, MG and coolant temps, does anyone have the PIDs to check tire pressure?

 

what feedback? where is RPM? where is coolant temp? where is aux battery voltage? A lot of important info is missing. tire pressure would be nice.

 

Toyota's implementation seems to use one receiver, to listen to all four sensors, it does not know where the tire is located, just that one or more tire(s) is(are) below the threshold. I think the Prius one is below the trunk deck.

GMs know the location of the tires and what they are reading. I hypothesize they have four receivers, one in each wheel well, to read the individual sensor. I like their system better.

As long as we are talking about minimalist implementation, what about my heated seats? A HI-LO would be nice, not just ON-OFF. Sigh!

 

Do the TPMS senders even have sufficient range for all of them to reliably reach a single receiver?

I thought they didn't, and even Toyota had four receivers.

 

I read the TPMS section of the repair manual, and I am fairly certain that it is a single receiver, in the cargo area.

Here is a diagram for a Camry, shows a single receiver in the C-pillar.
http://www-rohan.sdsu.edu/~nash/TCH/TPMS.pdf

I think the single receiver is also the reason we need to reset the golden pressures after a tire rotation, with different F/R pressures because the system does not know the F/R assignments of the different tires.

 

LOL!

Obviously I struck a nerve with some people saying I don't particularly think I want or need individual tire pressure readouts.
I still believe this. BUT....
Like Back-Up camera's and smart key systems expected luxuries and technology advances and despite my feeling individual tire pressure readings are overkill and unnecessary (Gee, we managed to drive for decades without it), it probably will become more and more available and expected. - I'm fine with that.- If I "someday" buy a car that has it? Great. I don't think I'd ever walk on a lot, looking to buy, with it being a deal maker or breaker.

As far as "What Feedback?"

I suppose you are free to WANT as much feedback as possible. Which explains people purchasing scangauges and other tools.
Being a Hybrid, and a Prius though, I'd think it would be hard to argue that you aren't offered more feedback than in most conventional vehicles.

Maybe it's my Spartan and Economical vehicular history, but coming from a history of vehicles where often "feedback" was limited to a fuel gauge, a speedometer, and "maybe" a temp gauge and some hidden idiot lights that you hoped you never saw illuminated, I'd say The Prius offers plenty of feedback.

The sophistication of ALL vehicles is changing, but I'd say as far as computerized "feedback" Prius still is nearer the top than the bottom. You actually have your choice of redundant displays that can show you in full color the amount of charge in your Hybrid Battery, as well as moving arrows that are suppose to let you know when what part of the system is doing what...

Admittedly after you own a Prius a while, you realize a lot of the information isn't needed, and you make your choices about what display's you want and when you want them...but they are there and available.

It's a bit of ingenious combination of technology and marketing that Toyota learned you can gain, by "training" drivers to be partners and actively responsible for maintaining economical driving.

Many of the things just not so long ago, that were relatively unique to Prius and Hybrid driving have now become the norm in the mainstream.

When I first got my Prius, I had to actively tell myself NOT to watch all the graphs, gauges and feedback possible. Sometimes you just have to drive and NOT worry about whether the EV light is on or not.

So anyway, I'm not saying instantaneous, real time monitoring of a vehicles tires pressures isn't "neat". If you want it? You want it. I don't think I need it, so I don't want it.

 

I would've been happy with the TPMS idiot lights if the prius could remember two sets of tires, one for your main, and another set for winter tires. Alas, it doesn't have that feature, and getting a second set of TPMS from Toyota and getting it calibrated would've cost about $450. And it would have been an additional $100 each time I swapped the tire sets out to recalibrate the TPMS to the new set of tires I was putting on.

I also looked at the cloning technique where you could program some blank TPMS to read as your current ones so as to fool the sensor, but Goodyear's calibration tool couldn't even detect my TPMS. I'm guessing Toyota changes them every year so as to prevent third party places from being able to do that, so that the stealerships could then get more $$$ to do it.

As you can probably guess by my post, I just use my winter tires without the TPMS and just live with the light coming on. If the Prius had individual displays for each tires, I probably would have gotten them for the winter set because it would have been really helpful info, especially if I run over a nail or something similar.

But since it's just an idiot light, I don't feel it's worth the cost. I can't imagine it would cost more to have a car memorize 9 TPMS ID's (4 summer, 4 winter and the spare tire) as opposed to just 5.

 

Unfortunately, it takes a dealer's Techstream to "teach" the ECU any new TPMS sensors that were not OEM with your car. It would be expensive, but if each wheelwell had a receiver that could pick up just the signal from that tire, a system of displaying the status of each tire's pressure would be possible. Also, if you replaced a tire with a snow tire or just had to replace a worn TPMS valve/sending unit, you could press a "Learn" button for TPMS and have all 4 tires reset.

There already is a TPMS reset button (hidden in footwell), but that's just to adjust the system for the tire pressures you have chosen.

 

It's such a simple thing, and extremely beneficial. As has been posted, some ridiculously inexpensive cars already have it. Our Camry hybrid pressure light went on. I checked the tire that was obviously low, and it read 20 psi. Thanks for the friggin light

 

And I'm pretty sure that the transponders actually send out an ID number to a single receiver. The software assigns an ID number to a specific wheel.........for those cars that show individual tires, that is.

 

You don't need to reset the TPMS when you rotate the tyres. You do need to adjust the tyre pressure so you have +2 lbs in the front and not in the rear, though even that is minor. Considering those who regularly drive with 20-25 PSI in their tyres.
It would be nice if the system told us -which- tyre is low. I still maintain knowing the -actual- pressure is superfluous. My tyre gauge tells me that, and the actual pressure varies all over the place with temperature anyway. It's just another thing people would panic about. e.g. - most coolant temp. gauges have delay built in so the driver doesn't see the temp. climb when they are using the engine heavily (such as climbing a mountain pass). Seeing that would and has caused panic. The same reason we don't even -have- a temp. gauge in the Prius.

I have a Scangauge II, and I watch with amusement the various parameters change as I drive. AFTER watching with even more amusement some of the stunts other drivers pull.

 

Then one would have to update the sw after each tire rotation so it would know the new assignment?