The Tyre Pressure Monitoring System (TPMS) monitors the air pressure of all four tyres. If the air pressure of one or more tyres is too low, the system warns the driver by indicating the tyre pressure monitoring system warning light in the instrument cluster and operating a beep sound. The system monitors the tyre pressures indirectly using the data sent from the ABS wheel speed sensors.
To allow the system to operate correctly, the system needs to be initialized with the specifi ed tyre pressure (value on the tyre pressure label). Follow the procedure and perform the initialization.
Refer to Tyre Pressure Monitoring System Initialization on page 4-142 .
The warning light fl ashes when the system has a malfunction.
Refer to Warning Lights on page 4-38 .
CAUTION
Please note that the TPMS is not a substitute for proper tyre maintenance, and it is the driver's responsibility to maintain correct tyre pressure, even if under-infl ation has not reached the level to trigger illumination of the TPMS low tyre pressure telltale.
Your vehicle has also been equipped with a TPMS malfunction indicator to indicate when the system is not operating properly.
The TPMS malfunction indicator is combined with the low tyre pressure telltale.
When the system detects a malfunction, the telltale will fl ash for approximately one minute and then remain continuously illuminated. This sequence will continue upon subsequent vehicle start-ups as long as the malfunction exists. When the malfunction indicator is illuminated, the system may not be able to detect or signal low tyre pressure as intended. TPMS malfunctions may occur for a variety of reasons, including the installation of replacement or alternate tyres or wheels on the vehicle that prevent the TPMS from functioning properly. Always check the TPMS malfunction telltale after replacing one or more tyres or wheels on your vehicle to ensure that the replacement or alternate tyres and wheels allow the TPMS to continue to function properly.
NOTE
Because this system detects slight changes in tyre conditions, the timing of the warning may be faster or slower in the following cases:
Tyre Pressure Monitoring System Initialization
In the following cases, system initialization must be performed so that the system operates normally.
Initialization method
Refer to Tyres on page 9-10
CAUTION
If the system initialization is performed without adjusting the tyre pressure, the system cannot detect the normal tyre pressure and it may not illuminate the tyre pressure monitoring system warning light even if a tyre pressure is low, or it may illuminate the light even if the pressures are normal.
The system initialization will not be performed if the switch is pressed while the vehicle is being driven.
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