Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Tire Pressure Monitor (TPM) System
The Tire Pressure Monitor (TPM) system is available to continuously monitor the air pressure in each road tire (excluding the spare tire) while the vehicle is being driven. The TPM system also includes a self-check feature that monitors the system's components.
The TPM system consists of a sensor mounted on each of the 4 tires (strapped around the wheel, inside the tire), and a receiver/control module. When a tire pressure falls below 25 psi (172 kPa) after the vehicle has been driven about 30 seconds over 25 mph (40 km/h), a pressure switch within the sensor is activated. An electronic signal is transmitted to the receiver/control module, which will illuminate the LOW TIRE PRESSURE warning light and store a diagnostic code for that ignition cycle.
The receiver/control module also receives diagnostic signals from the wheel sensors. If one or more sensors do not send this signal during the diagnostic cycle, the receiver/control module will illuminate the SERVICE LTPWS warning light and store a diagnostic code.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.