I have a serious disagreement with the DOT mandate and implementation of the TPMS systems as used in the USA. Note that the Canadian system requires that the offending wheel be displayed, while in the USA it it is up to the owner to determine which wheel is a problem. It could even be the spare tire, who knows? The dealers won that one, as they can tell which wheel sensor is the problem, but not the owner!!

My 2008's have the same frustration. And if you park in the shade, on one side of the car in the winter, well, heaven forbid!

Enough of the rant! There is little we can do with a dumb system, except fight tooth and nail to not get 'run flat' tires, another unneeded expense.

As to the DSTC, only a dealer can get the proper codes with a VOL/FCR scanner. There are some problems with the earlier versions of the CEM that cause all sorts of strange problems. Most of the early days of ABS failures have been corrected, but the system is still able to be compromised by a faulty sensor.
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My back feels better when I sit in a Volvo seat