The relationship between tire pressure monitoring system sensors and products like Fix-a-Flat is a complicated one. The prevailing opinion for some time has been that products like Fix-A-Flat and TPMS sensors don’t mix, but expert opinions have changed in recent years.

Fix-a-Flat will not damage a tire pressure sensor simply by coming into contact with it. There are a few things to keep in mind when using Fix-a-Flat in a tire that has a tire pressure sensor, but the bottom line is that you can use it in an emergency as long as you take the necessary steps to protect your sensors afterward.

Fix-a-Flat is a brand name that people often use for all products in the same line, in the same way that people call generic tissue paper Kleenex, call a photocopy a Xerox, or Google for information on the internet. That said, products like Fix-a-Flat, Slime, and other emergency tire sealers and inflators all work on the same general principle of injecting a sealant and then filling the tire with air or another gas.

There are two types of these emergency tire repair products. The first contains both a sealant and a type of compressed gas, which is usually contained in a pressure vessel. When this type of product is used, the tire is both sealed and inflated to some extent.