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2015 Prius Four tire pressure display?

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Posted by Percival P. Cassidy on May 14, 2018, 2:02 pm
The 2015 Prius has TPMS that alerts the driver to improper pressures,  
but is there any way to display the individual tire pressures on our  
Prius Four (as our Chrysler 300M did)?


Posted by Elmo P. Shagnasty on May 15, 2018, 10:24 am
On 2018-05-14 14:02:25 +0000, Percival P. Cassidy said:

What does your owner's manual say about the display and about the  
technology that generates the display?

Posted by Percival P. Cassidy on May 16, 2018, 1:47 am
 On 05/15/2018 06:24 AM, Elmo P. Shagnasty wrote:

There is a picture in the Display Audio System Owner's Manual of a  
display of the individual tire pressures, but I have not discovered how  
to access it. The Owner's Manuals are "generic," covering vehicles with  
every different trim level and option package, and with the descriptions  
of so many features marked as "if equipped."


Posted by Elmo P. Shagnasty on May 16, 2018, 9:58 am
 On 2018-05-16 01:47:53 +0000, Percival P. Cassidy said:

yeah, that sucks.

It could be that the car technically knows about the state of each  
individual tire, but your trim level doesn't allow you to see it.

It could also be that the your car doesn't use individual sensors, but  
instead uses the ABS sensors to sense a difference in rotational speed  
to determine simply that there's a difference in tire pressure.  In  
that case, there's no direct pressure measurement used and therefore no  
direct tire pressure measurement is available.

Posted by Percival P. Cassidy on May 16, 2018, 7:14 pm
 On 05/16/2018 05:58 AM, Elmo P. Shagnasty wrote:

Now I have confirmed, as I read in an on-line forum, that the Display  
Audio System Owner's Manual is not even specifically for the Prius, so  
it may be that some more up-market Toyota models can display individual  
tire pressures, but not the Prius.


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