What is the crowd's opinion of Kensun AC/DC Digital Tire Inflator for Car 12V DC and Home 110V AC Rapid Performance Portable Air Compressor Pump for Car, Bicycle, Motorcycle, Basketball and Others?

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Don't forget that tire-pressures need to be checked cold, ideally before you've done any driving at all. Buy a portable air compressor that plugs into your lighter jack and you can fillup where and whenever: something like this: https://www.amazon.com/Kensun-Performance-Portable-Compressor-Inflator/dp/B01J8Y91GC/

Also (at least with BMWs and Toyota) don't forget to reset the TPM after you've adjusted the pressure (see your Owner's Manual index, probably under "tire"). I forgot to do this once on a BMW and got all sorts of terrifying error messages once the pressure peaked on the highway.

I see it went away. The pressure sensors in the latest model are nice because you can check the pressure for each individual tire.

We also had a flat last month, and I noticed that it triggered additional messages like you had (lane assist, etc.). All went away after the tire was fixed.

(This wasn't your case), but when the temperature drops, it's normal for car tire pressures to drop below the normal range. I picked this automatic tire pump from Amazon and use it to check/air up the tire pressures for both cars and it is so convenient to have.

https://www.amazon.com/gp/product/B01J8Y91GC/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1

https://www.amazon.com/Kensun-Performance-Portable-Compressor-Inflator/dp/B01J8Y91GC/