Your vehicle may have a check tire pressure system that can alert you to a large change in the pressure of one tire. The system will not alert you before you drive that a tire is low or flat. You must begin driving before the system will work properly.
The LOW TIRE PRESSURE message will appear on the Driver Information Center (DIC) and/or the LOW TIRE PRESSURE message will come on the message center if pressure difference, or low pressure, is detected in one tire. In the following conditions, the LOW TIRE PRESSURE may not come on even if the tire pressure is low, or it may come on when the tire pressure is actually normal if:
| • | More than one tire is low. |
| • | Only one tire is replaced with a new tire during service. |
| • | The vehicle is moving faster than 70 mph (113 km/h). |
| • | The system is not yet calibrated. |
| • | The tire treadwear is uneven. |
| • | The compact spare tire is installed. |
| • | Tire chains are being used. |
| • | The vehicle is being driven on a rough or frozen road. |
If the anti-lock brake system warning light comes on, the check tire pressure system may not be working properly. See your dealer for service. Also, see Antilock Brake System (ABS) Warning Light .
The check tire pressure system detects differences in tire rotation speeds that are caused by changes in tire pressure. The system can alert you about a low tire - but it does not replace normal tire maintenance. See Tires .
When the LOW TIRE PRESSURE message appears on the Driver Information Center and/or the LOW TIRE PRESSURE message comes on the message center, you should stop as soon as you can and check all your tires for damage. If a tire is flat, see If a Tire Goes Flat . Also check the tire pressure in all four tires as soon as you can. See Inflation - Tire Pressure .
Any time you adjust a tire's pressure or have one or more tires repaired or replaced, you will need to reset, or calibrate, the check tire pressure system. You will also need to reset the system whenever you rotate the tires, buy new tires and install or remove the compact spare.
Do not reset the check tire pressure system without first correcting the cause of the problem and checking and adjusting the pressure in all four tires. If you reset the system when the tire pressures are incorrect, the check tire pressure system will not work properly and may not alert you when a tire is low or high.
To reset the system, do the following:
- With the engine off, turn the ignition to ON.
- Press the MODE button until the DIC reads LOW TIRE PRESSURE.
- Press and hold the SET button until TIRE PRESSURE NORMAL is displayed.
You will hear three chimes and the LOW TIRE PRESSURE message will go off and the DIC will return to TIRE PRESSURE NORMAL. If the LOW TIRE PRESSURE message comes back on, the check tire pressure system has not reset. Repeat the procedure.
The system completes the calibration process during driving. The system learns the pressure at each tire throughout the operating speed range of your vehicle. The system normally takes between 30 and 60 minutes of driving to learn the tire pressures. The system normally takes 10 to 20 minutes of driving in each speed range to learn tire pressures. The speed ranges are 20 to 40 mph (32 to 64 km/h), 40 to 60 mph (64 to 96 km/h), and above 60 mph (96 km/h). This time may be longer depending on your individual driving habits. The learning process does not need to be completed during a single trip. Once learned, the system will remember the tire pressures until the system is reset.
