Tire Pressure Sensor Replacement

Tire Pressure Sensor Replacement

Removal
1. Raise the vehicle, and support it with safety stands in the proper locations.
2. Remove the wheel with the faulty sensor.
3. Remove the tire valve cap and the valve core, and let the tire deflate.
4. Remove any balance weights, and 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° 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 and discard the valve stem nut (A), then remove the tire pressure sensor and valve stem (B) from the wheel.

NOTE: Use a new nut and a new valve stem on reassembly.





7. Remove and discard the valve stem (A), and the screw (B) from the tire pressure sensor (C).

NOTE: The valve stem grommet (D) might stay in the wheel; make sure you remove it.





Installation

NOTE: Use only wheels that have a TPMS or PAX System mark (A) on them.





1. Assemble the new valve stem (A), new screw (B), and the sensor-transmitter (C).

NOTE: Always use a new valve stem and new screw.





2. Before installing the tire pressure sensor, clean the mating surfaces on the sensor and the wheel.
3. Install the tire pressure sensor (A) to the wheel (B), and tighten the valve nut (C) finger tight. Make sure the pressure sensor is resting on the wheel.





4. Tighten the valve nut to the specified torque while holding the tire pressure sensor toward (D) the wheel. You may hear a snap or pop as you tighten the nut. This is normal.

NOTE:
- Do not reuse the nuts that had been tightened, even one time, to the specified torque, as they are deformed inside (E).
- Do not use air or electric impact tools to tighten a valve stem nut.
- Tightening the nut beyond the specified torque can damage the nut.
- Make sure that there is no space between the sensor and the wheel.

5. Lube the tire bead, and 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 install the tire onto the wheel.





6. Inflate the tire to 300 kPa (3.1 kgf/cm2, 44 psi) to seat the tire bead to the rim, then adjust the tire pressure to front 220 kPa (2.2 kgf/cm2 32 psi), rear 210 kPa (2.1 kgf/cm2, 30 psi), and install the valve stem cap.

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

7. Check and adjust the wheel balance, then install the wheels to the vehicle.
8. Remove the safety stands, and lower the vehicle.
9. Connect the HDS, and memorize the pressure sensor ID(s).

Resetting the PAX System Warning
When a tire goes flat or is very low on pressure, the multi-information display will show PAX SYSTEM WARNING, RUN FLAT DRIVING. After the tire is repaired or replaced, you must reset the warning indicator (and the mileage counter that supports it), no matter how far the vehicle was driven in the run flat mode.

1. Put the gauge control module into the self diagnostic mode:
- Turn the ignition switch ON (II).
- Within 5 seconds, turn the headlights OFF, then ON and OFF again.
- Press and hold the SELECT (dash lights brightness control) button.
- Turn the headlights ON.
- Within 5 seconds, release the SELECT button, and then push and release the button three times repeatedly.

2. Once the gauge control module is in the self diagnostic mode, press and hold the INFO button on the steering wheel for 5 seconds to get to the CUSTOMIZE MENU.
3. With the INFO button, scroll through to the PAX RESET screen, then press the SEL/RESET button on the steering wheel.
4. With the INFO button, scroll through to the appropriate wheel, then press the SEL/RESET button on the steering wheel to reset the system warning. The screen should display PAX RESET COMPLETED.
5. Turn the ignition switch OFF to exit the self diagnostic mode.