RAM 3500 HD Truck 2WD L6-6.7L DSL Turbo (2008)
Tire Pressure Sensor: Description and Operation
Description
DESCRIPTION
On vehicles equipped with Tire Pressure Monitoring System, one tire pressure sensor (6) is mounted to each wheel in place of the traditional tire valve
stem. Each sensor has an internal battery that lasts up to 10 years. The battery is not serviceable. At the time of battery failure, the sensor (6) must be
replaced. The TPM system operates on a 315 MHz radio frequency. The 315 MHz sensors can be easily identified by a GREEN sensor body, with (an
triangle insignia) (1). The 433 MHz sensors can be identified by a grey sensor body with an oval insignia. For car applications, there is a 315 MHz TPM
sensor with a Black sensor body with an oval insignia.
NOTE: This vehicle uses the 315 MHz TPM sensor with the GREEN sensor body. Although 315 MHz and 433 MHz sensors are identical in size
and shape, they are not interchangeable. Always make sure the correct color sensor is being used. A RKE-TPM Analyzer can be used to
determine the sensor's frequency without having to dismount the tire.
The TPM sensors are designed for original style factory wheels. It is not recommended to install a tire pressure sensor in an aftermarket wheel. (This
could cause sealing and system performance issues.)
The serviceable components of the tire pressure sensor are:
-
Sensor-To-Wheel Seal (4)
-
Valve Stem Cap (2)
-
Valve Stem Core
-
Valve Stem Nut (3)
The valve stem caps and cores used are specifically designed for the tire pressure monitoring sensors. Although similar to standard valve stem caps and
cores, they are different. The valve stem cap has a special seal inside to keep moisture and corrosion out. The valve stem core has a special nickel
coating to protect from corrosion.
