TOYOTA 2011 Sienna - Manual (Page 661)

603
4-3. Do-it-yourself maintenance
4
Mainten
ance an
d ca
re
NOTICE
■ If you remove the air cleaner filter
Driving with the air cleaner filter removed may cause excessive engine wear
due to dirt in the air. Also a backfire could cause a fire in the engine compart-
ment.