peterrx

how do i check the tire pressure of the tires in the car. i know that there are tire pressure sensors and i have seen on the website that it can be displayed on the speedometer?

RXSF

Do you own a 350? If so, you do not get tire pressure readings, only a dummy light that tells you if you have low pressure in one or more tires. If you have a 450h, you get the individual tire pressure readings.

JRinSC

Well, darn...

nelsonsc

Not too convenient, but can do it with Techstream. So, you know the data is there, just no display available. Honestly, the display between the gauges is useless.

JRinSC

Thanks Nelson, I have read some of the posts concerning how hard it is to be sure which tire is which on the 450 display. I guess a low warning is good enough if you just plan to keep a tire gauge in your car -- which I will do from now on!

NateJG

The 450h's pressure display is mildly entertaining - to watch the tire pressures go from 34ish to over 40 at highway speeds and fluctuate 2 psi and settle in (or not) at a common pressure.

The Idiot Light might result in more or less anxiety - depending upon whether one is "glass half full" or "glass half empty" leaning.

And since I haven't tried to figure out which reported pressure goes with what wheel position, an Idiot Light would likely serve me just fine.

My roadster "backs into" a go/no-go report by deducing that a tire is low if the wheel speed changes quickly (presumedly due to a flat).

It is more likely an indication that the run-flat tire (and, unfortunately, it's axle-mate) are then in need of replacement.

Making lemonade from lemons, that low-tech method also means that I can change wheels (if I were to put winter or Track tires on) without needing to ignore an insistent Idiot Light or introducing the new wheel TPSs to the car's computer.

raylor4

I know you are hoping for an instrument cluster read-out, but to check your tire pressures, you need a tire pressure gage. Use the pressure recommendation posted on the door frame. Hope this helps.
Ray A.