Section 510 (Tires & Wheels): Sensor: Description

WARNING: This page is about a different car, the 2005 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Sensor Mounting - Exploded View

Courtesy of DAIMLERCHRYSLER CORP.

1 - METAL WASHER

2 - SEAL

3 - NUT (WITH PRESSED-IN WASHER)

4 - CAP (WITH SEAL)

5 - SECTIONAL CUTAWAY OF WHEEL

6 - TPM SENSOR

On vehicles equipped with Tire Pressure Monitoring (TPM), one tire pressure sensor (6) is mounted to each wheel (5) 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 must be replaced. See Fig 1.

Fig 2: Tire Pressure Sensor

Courtesy of DAIMLERCHRYSLER CORP.

1 - ANTENNA STRAP

2 - VALVE STEM

3 - IDENTIFICATION INSIGNIA

The 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 (3) on the sensor body. See Fig 2.

Fig 3: Tire Pressure Sensor - Export

Courtesy of DAIMLERCHRYSLER CORP.

1 - ANTENNA STRAP

2 - VALVE STEM

3 - IDENTIFICATION INSIGNIA

The Export TPM system operates on a 434 MHz radio frequency. The 434 MHz sensors can be easily identified by a solid white oval insignia (3) on the body. See Fig 3.

CAUTION: Although 315 MHz and 434 MHz sensors are identical in size and shape, they are not interchangeable. Always make sure the correct sensor is being used.

The TPM sensors are designed for original style factory wheels. Do not attempt to install a tire pressure sensor in an aftermarket wheel.

Fig 4: Sensor Mounting - Exploded View

Courtesy of DAIMLERCHRYSLER CORP.

1 - METAL WASHER

2 - SEAL

3 - NUT (WITH PRESSED-IN WASHER)

4 - CAP (WITH SEAL)

5 - SECTIONAL CUTAWAY OF WHEEL

6 - TPM SENSOR

The serviceable components of the tire pressure sensor are. See Fig 4:

Sensor-To-Wheel Seal (2) and Metal Washer (1)
Valve Stem Cap (4)
Valve Stem Core
Valve Stem Nut (with pressed-in washer) (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.