The tire pressure warning system is designed to provide warning when tire inflation pressure is critically low
while the vehicle is moving. The low tire pressure warning light comes on to inform you that such low tire
This system is not designed to operate when the vehicle is stopped. Therefore, check the tire inflation
pressure regularly. The recommended cold tire inflation pressure, tire size and the vehicle capacity weight are
on the tire and loading information label.
Installed tires should be of the specified size. They should be of the same size and construction. If tires other
than the specified size are used, or if tires of different sizes or construction are mixed, the tire pressure warning
This light comes on when the ignition key is turned to the “ON” position. It goes off after few seconds. This
indicates that the tire pressure warning system is functioning properly.
If the low tire pressure warning light comes on or blinks while driving, do the following.
• If the warning light comes on: The tire pressure is critically low. Adjust the tire inflation pressure to the
Once the ignition switch is turned off, the warning light also goes off. If the light comes on again when the
vehicle is started after adjusting tire inflation pressure to the specified level, have the system checked at your
If you have a flat tire, replace it with the spare tire. 496.
• If the warning light blinks every 0.5 seconds: The low tire pressure warning system may be
• If the warning light blinks every 0.25 seconds: The low tire pressure warning system needs to be
initialized. Reset system with the tire pressure warning system reset switch.
The tire pressure warning system does not function properly under certain circumstances. In the following
cases, the tire pressure warning light may not come on even if the inflation pressure is low, or it may come on
when the tire inflation pressure is actually normal.
• A compact spare tire, snow tires, or tire chains are used.
• The tire inflation pressure is excessively higher than specified, or tire inflation pressure suddenly drops
• The vehicle is driven on a slippery road surface such as rough or frozen roads.
• The vehicle speed is less than 30 km/h (19 mph) or more than 100 km/h (62 mph), and the driving
• The tires differ in tread pattern or manufacturer.
• The tires are not the specified size.
• The tread wear is very different among the installed tires.
• Rapid acceleration/deceleration or sharp turns is continue.
• The loading is over the limit or imbalanced.
• Initialization was not performed correctly after replacing or rotating tires or wheels.
Tire pressure warning system reset switch
To initializing the system, perform the following:
1. Park the vehicle at a safe place and apply the parking brake. Stop engine.
2. Adjust the pressure of all the installed tires to the specified level*.
4. With the vehicle stopped, push the reset switch on the left lower instrument panel and hold it until the low
tire pressure warning light blinks three times.
Initialization is completed after driving at the speeds of the 30 km/h (19 mph) or over for about a few hour
total, when the tire pressure warning system detects the normal tire pressure. If the following driving conditions
are satisfied, initialization will be completed in about one hour.
• Vehicle speed varies between 30 km/h (19 mph) and 80 km/h (50 mph)
When the warning light blinks every 0.25 seconds while driving, you may be unable to reset the system. In
this case, set the system again according to the above procedure.
Don’t push the reset switch without adjusting the tire inflation pressure to the specified level. Otherwise, the
low tire warning light may come on when the tire inflation pressure is actually normal.
If you push the reset switch while the vehicle is moving, initialization is not performed.
If the low tire pressure warning light does not blink when you push and hold the reset switch, have the low
pressure warning system checked at your Lexus dealer.
Tire inflation pressure 210 kPa (2.1 bar)
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