Tire Pressure Sensor: Service and Repair

Tire Pressure Sensor Replacement

NOTICE
Each tire pressure sensor contains a lithium anode battery that is not removable. The complete should be disposed of according to local battery disposal guidelines or requirements. An improperly disposed of battery can be harmful to the environment.


Removal

1. Raise and support the vehicle Service and Repair.

2. Remove the wheel with the faulty sensor.

3. Remove the tire valve stem cap and the valve core, and let the tire deflate.

4. Remove any wheel balance weights, then break the bead loose from the wheel with a commercially available tire changer (A).

NOTICE
Note these items to avoid damaging the tire pressure sensor:
- Do the outside of the wheel first.
- Position the wheel as shown so the valve stem (B) is 90 degrees from the bead breaker (C) as shown.
- Do not position the bead breaker of the tire changer too close to the rim.







5. Position the wheel so the tire machine (A) and tire iron (B) are next to the valve stem (C) and will move away from it when the machine starts. Then remove the tire from the wheel.






6. Remove the valve stem nut (A) and washer (B), then remove the tire pressure sensor with valve stem (C) from the wheel.

NOTE: Check the nut and the washer, if they have deterioration or damage, replace them with new ones during reassembly.






7. Remove the valve stem grommet (A), from the tire pressure sensor (B).

NOTE:

- The valve stem grommet might stay in the wheel; make sure you remove it.
- Always use a new valve stem grommet whenever the tire pressure sensor has been removed from the wheel. When only removing a tire from the wheel, replace the valve stem grommet if it is possible.






Installation

NOTE: Use only wheels that have a "TPMS" stamp (A) on them.





1. Before installing the tire pressure sensor, clean the mating surfaces on the sensor and the wheel.

2. Install the tire pressure sensor (A) and the washer (B) to the wheel (C), and tighten the valve stem nut (D) finger tight. Make sure the pressure sensor is resting on the wheel.

NOTE: Install the tire pressure sensor so that the sensor housing surface (E) should not exceed the protrusion (F) of the wheel to prevent the sensor housing from being caught on the bead of the tire when assembling the tire. Be sure to always mount the tire pressure sensor with the feet (G) in the downward position toward the wheel.









3. Tighten the valve stem nut to the specified torque while holding the tire pressure sensor.

NOTE: Do not use air or electric impact tools to tighten a valve stem nut.

4. Lube the tire bead, and position the wheel so the tire machine (A) are next to the valve stem (B) and will move away from it when the machine starts. Then install the tire onto the wheel.





5. With a dry air source, inflate the tire to 300 kPa (3.1 kgf/cm, 44 psi) to seat the tire bead to the rim, then adjust the tire pressure Service and Repair, and install the valve stem cap.

NOTE: Make sure the tire bead is seated on both sides of the rim uniformly.

6. Check and adjust the wheel balance, then install the wheels on the vehicle.

7. Lower the vehicle. Torque the wheel nuts to specifications Service and Repair.

8. Connect the HDS, and memorize the pressure sensor ID(s) Testing and Inspection.