TOYOTA 2011 Avalon - Manual (Page 449)

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4-3. Do-it-yourself maintenance
AVALON_U (OM41428U)
Remove the filter cover while
pushing in both ends of the
cover.
Pull the filter out of the filter
outlet.
n Cleaning method
If the filter is dirty, clean by
blowing compressed air
through the filter from the
downward side.
Hold the air gun 2 in. (5cm)
from the filter and blow for
approximately 2 minutes at 72
psi (500 kPa, 5.0 kgf/cm
2 or
bar).
If it is not available, have the
filter cleaned by your Toyota
dealer.