Tire Pressure Warning Valve and Transmitter
The tire pressure warning valve and transmitters are integrated in the tire valves. Each tire pressure warning valve and transmitter consists of a lithium battery, sensor and transmitter.
Make sure not to damage the urethane-covered backside of the transmitter (the surface opposite to the side with the ID code) with anything sharp.
The tire pressure warning valve and transmitter directly measures tire pressure and temperature to see if the vehicle can continue to run.
The transmitter transmits these measured values to the tire pressure warning antenna on a frequency of 433.90 MHz.
| *1 | Tire Pressure Warning Valve and Transmitter | *2 | Washer |
| *3 | Tire Valve Core | *4 | Tire Valve Cap |
| *5 | Nut | *6 | Grommet |
| *7 | Lithium Battery | *8 | Sensor and Transmitter |
| *a | ID Code (Hexadecimal 7 Digits) | - | - |
Tech Tips
The lithium battery in the tire pressure warning valve and transmitter is a type cannot be replaced. If the lithium battery is depleted, the tire pressure warning valve and transmitter must be replaced.
A new tire pressure warning valve and transmitter is shipped in sleep mode to prevent the battery from depleting in storage. When the tire pressure in the detection portion of the tire pressure warning valve and transmitter decrease by 40 kPa (5.8 psi, 0.4 bar) within 30 seconds, the tire pressure warning valve and transmitter automatically cancels sleep mode. Once sleep mode is canceled, the tire pressure warning valve and transmitter cannot revert to sleep mode.
After a tire pressure warning valve and transmitter has been replaced, the ID code of the tire pressure warning valve and transmitter must be registered in the tire pressure warning ECU and receiver. To register the ID code, use a Global TechStream (GTS) to enter the ID code that is indicated on the tire pressure warning valve and transmitter.
The ID code is written on the tire pressure warning valve and transmitter.
Be careful not to damage the tire pressure warning valve and transmitters when removing and reinstalling them.
Replace the grommet, valve core with new ones when replacing or removing and reinstalling the tire pressure warning valve and transmitter. This is necessary to ensure sealing performance.
When replacing a valve cap, use only a specified cap. If an unspecified cap is used, it may stick to the tire pressure warning valve and transmitter.
For details, refer to the Repair Manual.