Tire Pressure Sensor: Notes
IMPORTANT:
The Domestic TPM system operates on a 315 MHz radio frequency. The 315 MHz sensors can be easily identified by a white outline oval (black center) insignia on the sensor body.
The Export TPM system operates on a 433 MHz radio frequency. The 433 MHz sensors can be easily identified by either a solid white oval insignia on the body or a solid white oval insignia with 433 printed in the center. The sensors are identical except for the oval insignia. The 433 MHz sensors can either have a black or grey sensor body.
Although 315 MHz and 433 MHz sensors are identical in size and shape, they are not interchangeable. Always make sure the correct sensor is being used.
NOTE:
Sensors may be identified by valve stem cap color. From the factory, 315 MHz sensors have a gray valve stem cap while 433 MHz sensors have a black valve stem cap. Otherwise, once mounted inside a tire and wheel assembly you are not able to visually tell the difference between a 315 MHz and 433 MHz sensor. At that point, the TPM-RKE Analyzer, Special Tool 9936, with the Scan Tool may be used to identify the sensor frequency or the tire can be dismounted allowing visual inspection of the sensor body.
CAUTION:
The use of tire sealants is strictly prohibited for vehicles equipped with the Tire Pressure Monitor (TPM) system. Tire sealants can clog tire pressure sensors.
CAUTION:
Before installing tire pressure sensor, ensure you have the correct sensor. Sensors can be easily identified by a white outline oval (with black center) insignia on the sensor body.
CAUTION:
To prevent moisture and contamination from entering the valve stem, the cap used on this valve stem contains an "O" ring seal. Retain original valve stem cap for reuse. A regular valve stem cap cannot be used as a substitute. After inspecting or adjusting the tire pressure, always reinstall the valve stem cap. This will prevent moisture and dirt entry into the valve stem, which could damage the tire pressure sensor.
CAUTION:
The valve stem used on this vehicle is made from aluminum, and the core is nickel-plated brass. Retain original valve stem core for reinstallation. Do not substitute a valve stem made of a different material, as the different metals will cause corrosion.
CAUTION:
Any time a sensor is to be installed in a wheel, a new seal and washer must be installed on the stem to ensure air tight sealing. See Figure.
CAUTION:
DO NOT reuse sensor-to-wheel grommet. Always use a new grommet when installing a pressure sensor and properly torque the sensor nut.