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 used for continuous monitoring of tire pressure in all 4 road wheels while the vehicle is moving. It assists the driver in checking tire pressures, and provides warning messages on the instrument cluster display in case of loss of tire pressure.
The TPMS may fail to operate correctly due to the following conditions:
- If warning indicators are displayed at the end of a learning phase, it means that the system cannot recognize which wheels are mounted on the vehicle. This may be because one or more wheels were mounted lacking a wheel sensor.
- A wheel sensor or other component may have failed.
- The system recognizes more than 4 wheels are present on the vehicle (i.e., when additional winter tires are being transported on the vehicle and are transmitting data).
- A wheel was changed, and the new tire was not initialized.
- If vehicle is being operated with snow chains, system function can be affected by the shielding effect of the chains.
- System is not available due to a malfunction.
- Other transmitting devices with the same frequency (i.e., headphones with integrated radio) are emitting an electromagnetic field which can cause temporary interference in the system.
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.