5528-2. Steps to take in an emergency
SIENNA_OM_OM08007U_(U)
WARNING
■Maintenance of the tires
Each  tire,  including  the  spare  (if  provided),  should  be  checked  monthly
when  cold  and  inflated  to  the  inflation  pressure  recommended  by  the
vehicle  manufacturer  on  the  vehicle  placard  or  tire  inflation  pressure
label  (tire  and  load  information  label).  (If  your  vehicle  has  tires  of  a  dif-
ferent size than the size indicated on the vehicle placard or tire inflation
pressure  label  [tire  and  load  information  label],  you  should  determine
the proper tire inflation pressure for those tires.)
As an added safety feature, your vehicle has been equipped with a tire
pressure  monitoring  system  (TPMS-ti re  pressure  warning  system)  that
illuminates a low tire pre ssure telltale (tire pressure warning light) when
one  or  more  of  your  tires  is  significantly  under-inflated.  Accordingly,
when  the  low  tire  pressure  telltale  (tire  pressure  warning  light)  illumi-
nates,  you  should  stop  and  check  your  tires  as  soon  as  possible,  and
inflate  them  to  the  proper  pressure.  Driving  on  a  significantly  under-
inflated  tire  causes  the  tire  to  overheat  and  can  lead  to  tire  failure.
Under-inflation  also  reduces  fuel  effi ciency  and  tire  tread  life,  and  may
affect the vehicle’s hand ling and stopping ability.
Please note that the TPMS (tire pres sure warning system) is not a sub-
stitute for proper ti re maintenance, and it is  the driver’s responsibility to
maintain  correct  tire  pressure,  even  if  under-inflation  has  not  reached
the level to trigger illumina tion of the TPMS low tire pressure telltale (tire
pressure warning light).
Your vehicle has also been equipped with a TPMS (tire pressure warn-
ing  system)  malfunction  indicator  to  indicate  when  the  system  is  not
operating  properly.  The  TPMS  (tire  pressure  warning  system)  malfunc-
tion indicator is combined with the lo w tire pressure telltale (tire pressure
warning  light).  When  the  system  dete cts  a  malfunction,  the  telltale  will
flash for approximately one minute and  then remain continuously illumi-
nated.  This  sequence  will  continue  up on  subsequent  vehicle  start-ups
as long as the malfunction exists.  When the malfunction indicator is illu-
minated,  the  system  may  not  be  able  to  detect  or  signal  low  tire  pres-
sure as intended.
TPMS (tire pressure warning system)  malfunctions may occur for a vari-
ety of reasons, including the installati on of replacement or alternate tires
or  wheels  on  the  vehicle  that  prevent  the  TPMS  (tire  pressure  warning
system)  from  functioning  properly.  Always  check  the  TPMS  (tire  pres-
sure  warning  system)  malfunction  te lltale  after  replacing  one  or  more
tires  or  wheels  on  your  vehicle  to  ensure  that  the  replacement  or  alter-
nate tires and wheels allow the TPMS  (tire pressure warning system) to
continue to function properly.