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
During driving at speeds above 25 mph (40 km/h), the low tire pressure warning system receives the signal transmitted from the transmitter installed in each wheel, and gives alarms when the tire pressure becomes low.
A sensor-transmitter integrated with a valve (installed on each wheel) transmits a detected air pressure signal in the form of a radio wave. An antenna located in passenger-side front pillar receives the air pressure signal transmitted by the transmitter in each wheel. The low tire pressure warning control unit reads the air pressure signal received by the antenna, and controls the warning light and the buzzer operations. It also has a judgement function to detect a system malfunction.
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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.