Q: Q: How does the tire pressure monitoring system work?

asked by on

How does the tire pressure monitoring system work?

Your car’s tire pressure monitoring system (TPMS) is designed to help you keep an eye on the tire pressure. If the system notices a drop in pressure in a tire below a specific threshold, it will turn on the Low Tire Pressure Light on the dash. This is your signal to check all four tires and add air. You should also inspect the tire for punctures or other signs of a leak.

The TPMS system works with a series of sensors inside the wheels. You have one tire pressure sensor per wheel. If the sensor is damaged, the system will turn on the TPMS light, rather than the Low Tire Pressure Light. If you have the message center in your car, it will also display a message about a sensor problem. If there is a problem with the TPMS system itself, the TPMS light will come on and message about a system fault will be displayed on the center screen.

Tip

If you’re driving with your spare tire installed, you will see the Low Tire Pressure Light and the TPMS Light. Eventually, the Low Tire Pressure Light will turn off and leave only the TPMS Light.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Q: How does the tire pressure monitoring system work?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Q: How does the tire pressure monitoring system work?

Your car is equipped with a tire pressure monitoring system (TPMS) that checks the pressure in each tire via a special sensor mounted inside the tire (it’s connected to the valve stem). When the system detects a drop in tire...

Q: My DPFE sensor burned up. What do you think caused this and will it do a new one the same way?

Hi and thanks for contacting YourMechanic. The delta pressure feedback of EGR (DPFE) sensor was burned up for having too much back pressure on the engine. A plugged catalytic converter or a plugged exhaust muffler will cause the engine...

Q: What does it mean if the Battery Light comes on in the dash?

Your car’s dash is “information central” for everything you need to know about the vehicle. If you see the Battery Light turn on (also called the Charging System light), it means that the battery is not being charged. This might...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.