How to Reset the Tire Pressure Warning System on a 2007 Lexus RX350

by Justin Cupler

Lexus released the RX-series of SUVs in the 1999 model year, with the launch of the RX300. As the engine size increased in the RX, the name changed as well. In 2004, a 3.3-liter engine replaced the 3.0-liter, and Lexus changed the name to the RX330. In 2007, the 3.5-liter V-6 replaced the 3.3-liter, and the name changed to RX350. The 2007 RX350 came standard with a direct tire-pressure-monitoring system, which had a pressure sensor mounted in each tire. When the pressure drops in one tire a light illuminates on the dashboard to alert the driver. Anytime you perform a tire rotation or replace the TPMS computer, you must reset the TPMS system.

Step 1

Set all four tires to 30 psi, as recommended by the manufacturer, using compressed air with a tire inflation attachment.

Step 2

Engage the RX350's parking brake. Insert the key in the ignition and turn it to the "On" position, but don't start the vehicle.

Step 3

Press and hold the tire-pressure-monitoring system reset button --- a small, black button under the dashboard, to the right of the steering column --- until the tire pressure warning light blinks three times, each blink lasting 1 second.

Step 4

Leave the ignition in the "On" position while the system initializes, which typically takes several minutes. Turn the ignition "Off" when the TPMS warning light extinguishes.

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