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PRIUS_OM_OM47E09U_(U)
6-3. Do-it-yourself maintenance
■When replacing wheels
The  wheels  of  your  vehicle  are equipped  with  tire  pressure  warn ing
valves  and  transmitters  that  allow  the  tire  pressure  warning  sy stem  to
provide  advance  warning  in  the  event  of  a  loss  in  tire  inflatio n  pressure.
Whenever  wheels  are  replaced,  tir e  pressure  warning  valves  and trans-
mitters must be installed. ( P. 534)
WARNING
■When replacing wheels
●Do not use wheels that are a different size from those recommen ded in
the Owner’s Manual, as this may  result in a loss of handling control.
●Never  use  an  inner  tube  in  a  leaking  wheel  which  is  designed  fo r  a
tubeless tire. Doing so may resu lt in an accident, causing death or seri-
ous injury.
■When installing the wheel nuts
●Be  sure  to  install  the  wheel  nuts  with  the  tapered  ends  facing  inward.
(  P. 640) 
Installing the nuts with the taper ed ends facing outward can cause the
wheel to break and eventually cause the wheel to come off while  driv-
ing, which could lead to an accident resulting in death or seri ous injury.
●Never use oil or grease on the wheel bolts or wheel nuts.
Oil and grease may cause the wheel nuts to be excessively tight ened,
leading to bolt or disc wheel damage. In addition, the oil or g rease can
cause the wheel nuts to loosen and the wheel may fall off, caus ing an
accident  and  resulting  in  death  or  serious  injury.  Remove  any  oil  or
grease from the wheel  bolts or wheel nuts.
■Use of defective wheels prohibited
Do not use cracked or deformed wheels.
Doing so could cause the tire to  leak air during driving, possibly causing
an accident.