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Tire Pressure Low - Check Tire Pressures x3 <- 3 tires?

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scottf200

Well-Known Member
Feb 3, 2013
6,219
7,452
Chicagoland
Got this message on my X. Door says 42 psi. My gauge checking showed them all either 40 or 40.5.
[update] NOTE: I was just reading the manual and it says for towing the tires need to be set to 46 psi. [/update]

Is this the same or a different format on the Model S?

NOTE: the "... Pressures x3" which possibly means 3 tires.

Image: http://i.imgur.com/6Imqih2.png
6Imqih2.png
 
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Use the vehicle placard pressure as the minimum you never want to normally be below. It's odd that yours alerted that early--I wish mine would do that.
 
Use the vehicle placard pressure as the minimum you never want to normally be below. It's odd that yours alerted that early--I wish mine would do that.
I've only had the X for a day. I know my Volt's tire pressures vary a lot (3-4 psi swings) depending on temp and driving.

The car status app should show data from each sensor, no?
The Android Tesla App I'm using doesn't show individual tire pressures that I'm aware of.
Pictures here: https://play.google.com/store/apps/details?id=com.teslamotors.tesla&hl=en
 
Ah, I see. No, this would be in car functionality and I believe it pops up on the IC by default when a door is opened. At least that's my understanding of how it works on newer Model S.

My Volt's RemoteLink (OnStar) Android app shows me the individual tire pressures.
Image: http://i.imgur.com/kbJ2Izf.png
kbJ2Izf.png


On the X's driver info console I did display the TPMS display and it showed "-- psi" for the 2 fronts and left rear. Right rear area was blank. "--" goes away when you drive in a few minutes I think. (Which is also odd to me. The Volt's shows all the time and adjust when I am adding air in my garage).

Found this Model S display which seems to show which tire (if only one?)
Image: http://i.imgur.com/JTMGXM8.png
JTMGXM8.png
 
TPMS sensors work based on tire pressure changes. You have to drive the car for a couple of minutes to change the pressure, that in turn triggers the sensor to broadcast an update.

The Chevy's control modules caches the tire pressure information, and the diagnostic reports Onstar sends via e-mail contain the last known pressure values (it says last known values).

Tesla doesn't appear to cache it, so you'll get "--" until you drive enough to cause a pressure change.