Why is My TPMS Light On?

Most drivers are familiar with the TPMS indicator by now – they’ve been required by law in all vehicles made since 2007, and were a common feature for quite some time beforehand. TPMS, or tire pressure monitoring sensors/systems keep a close eye on tire pressure, by watching the wheel and using direct sensors in most modern tires.

There are a number of reasons your TPMS indicator may come on:


Heat and cold can shrink or expand air, and this directly affects pressure. For every 10 degrees colder, about 1 PSI of pressure is lost by a volume of air or increased by as much for every 10 degrees warmer. On cold mornings, as tires heat up from use, the light will probably turn off. Under heat though, there’s no reducing the excess pressure but letting some air out.

Natural Loss and Damage

Some damage can be slow about deflating a tire, meaning that even filling the air back up may not keep the light off for long. Visual inspections of your tires are important! Also, tires of course lose about 1.5 PSI of pressure naturally per month.

Help us keep the roads in Duluth, GA safe by visiting our Lincoln service department for more information about tire safety today.

Categories: Service