Toyota Matrix 2009 Owner's Manual page 358

NOTICE
n Repairing or replacing snow tires
Request repairs of and obtain replacement snow tires from Toyota dealers or
legitimate tire retailers.
This is because the removal and attachment of snow tires affects the opera-
tion of the tire pressure warning valves and transmitters.
Fitting tire chains
n
The tire pressure warning valves and transmitters may not function correctly
when tire chains are fitted.
2-5. Driving information
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