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Exactly. The light being on means "You don't know" if your tires are safe. Light off, means "You positively know your tires are safe".

Read about:

https://en.wikipedia.org/wiki/Fail-safe



These TPMS sensors do add a significant price increase on the tires, which most people I know about choose to avoid at the expense of this "lights on".

We do have to swap our tires for winter tires up north, so I'm not getting tires with the sensors.


Or you positively know rhat the light has been physically disabled, which is trivial on most cars.

Regardless, it seems an incredibly insensitive thing to give a poor rating over.


Or the car doesn't have TPMS... Like any car I have ever owned...




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