TOYOTA 2011 Avalon - Manual (Page 447)

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4-3. Do-it-yourself maintenance
AVALON_U (OM41428U)
NOTICE
n Replacing tire pressure warning valves and transmitters
l Because tire repair or replacement may affect the tire pressure warn-
ing valves and transmitters, make sure to have tires serviced by your
Toyota dealer or other qualified service shop. In addition, make sure to
purchase your tire pressure warning valves and transmitters at your
Toyota dealer.
l Ensure that only genuine Toyota wheels are used on your vehicle.
Tire pressure warning valves and transmitters may not work properly
with non-genuine wheels.