Tire Pressures not read 2017 LC

[open country]

Maybe. The outstanding question is whether discount programmed your vehicle for the new IDs.

They are accustomed to using sensors that clone the Tx ID of the original sensors. This means no programming of the vehicle itself. Conversely your new factory sensors have all new IDs that need to be programmed into the vehicle so it knows what to look for.

In my experience bringing in a different type than they are used to can scramble their brains a bit. I provided the IDs of the new sensors but they couldn’t find a way to input those with their programmer.. they could only use that programmer to read what my new sensors were transmitting to then program the car.. trouble was, they didn’t follow the procedure to wake them (and I didn’t know it yet) so they couldn’t read IDs at all.

So.. to your knowledge, did they program the vehicle? If not, and you don’t have the IDs noted anywhere, they may need to be woken up then scanned individually to get the ID for subsequent programming of the vehicle. Alternately they can open the tire and note the IDs from the sensor bodies, but obviously this is much more intrusive.

For the record I keep my sensor IDs in a dedicated page of my maintenance spreadsheet in case they are needed later.

I didn't note the sensor IDs before handing to them. They mentioned OEM sensors being "pre-programmed" so maybe didn't even do a pairing procedure. So I presumed since I never had a TPMS error light they did something to the effect of pairing, but you're teaching me that TPMS could be "paired" but not actively transmitting if that wording is correct.

I had them do the same on our 2016 Sequoia (different part number) and their equipment completely failed to pair to the car, had to go to Toyota to get it completed. May have to do that again unfortunately.

I had Discount Tire install my sensors and new tires and they did program my new sensors into the TPMS computer, and I left with NO light on (I've left Discount Tire before with the TPMS light on and they said it'd go off...it never does). I have the "--" as well for each tire on my dash cluster screen.

Exactly my experience. Told me I had to drive "50 miles" for the readings to populate on the dash.