Tire Pressure Warning Valve And Transmitter: Replacement

1. Remove the valve core and cap, and release air from the tire.
2. After ensuring that air is sufficiently released, remove the nut and washer that are used to fix the tire pressure warning valve and transmitter and drop the valve sensor inside the tire.

   HINT:

   Keep the removed cap, valve core, nut and washer.

3. After dropping the tire pressure warning valve and transmitter into the tire, disengage the bead using the shoe of the tire remover.
   NOTE: Be careful not to damage the tire pressure warning valve and transmitter because of interference between the sensor and tire bead.
4. Remove the bead on the upper side.
5. Take out the valve sensor from the tire and remove the bead on the valve.

Fig 1: Disengaging Bead Using Shoe Of Tire Remover

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

Check that there are no cracks or damage on the grommet. If any damage is found, replace the grommet together with the washer and nut.

1. Insert the tire pressure warning valve and transmitter into the valve installation hole. Insert it from the inside of the rim so that the print surface can be seen.
   Fig 2: Identifying Paint Surface

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   NOTE:

   • Check that there is no visible deformation, damage or other abnormalities on the transmitter.
   • Check that there is no foreign matter on the inner grommet and around the rim hole.
   • If installed in the reverse direction, the tire pressure warning valve and transmitter may be damaged or fail to transmit signals when running at high speed.
   • If installing a new tire pressure warning valve and transmitter, write down the ID number before installation.
   • It is necessary to register the ID in the ECU after installation (see REGISTRATION ).
2. Install the washer on the tire pressure warning valve and transmitter from the rim side and tighten with a nut.

   Torque: 4.0 N*m (41 kgf*cm, 35 in.*lbf) 

   NOTE:

   • Check that there is no foreign matter on the washer and nut.
   • If the tire pressure warning valve and transmitter is removed when the tire is removed for replacement, check that there is no damage or cuts, and no foreign matter such as mud, dirt or sand attached to the grommet. Replace the grommet with a new one if necessary.
   • Check that there is no oil, water or lubricant around the rim hole, tire pressure warning valve and transmitter, washer and nut. Failing to check may result in improper installation.
   Fig 3: Installing Washer On Tire Pressure Monitor Valve From Rim Side And Tighten With Nut

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. After the tire is inflated, the valve nut may be loose. Retighten the nut to the specified torque and then check for air leaks with soapy water.

   Torque: 4.0 N*m (41 kgf*cm, 35 in.*lbf) 

4. Set the wheel disc to the mounting machine and install the lower tire bead. Position the main body of the valve sensor as in the shaded area shown in the illustration.
   NOTE: If the valve sensor is positioned outside this area, it generates interference with the tire bead, causing possible damage to the valve sensor.
5. Install the upper bead.

Fig 4: Identifying Valve Sensor Main Body Position

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Torque: 131 N*m (1,340 kgf*cm, 97 ft.*lbf) 

Torque: 131 N*m (1,340 kgf*cm, 97 ft.*lbf) 

1. Inspect the tire (see INSPECTION ).

1. Register the transmitter ID (see REGISTRATION ).

1. When the valve is replaced, perform initialization (see INITIALIZATION ).

1. Perform initialization (see INITIALIZATION ).
   NOTE: Certain systems need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.