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failure . Under-inflation
also reduces fue l efficiency and tire tread
life, and may affect the veh icle's handling and stopping abi lity.
Please note that the TPMS is not a substitute for proper tire mainte-
nance, and it is the driver's responsibi lity to maintain correct tire
pressure, even if under-inflation
has not reached the leve l to tr igger
illumination
of the TPMS low tire pressure tellta le.
Your veh icle has also been equipped with a TPMS malfu nction indi-
cator to indicate when the system is not operating properly . The
TPMS malfunction
indicator is combined w ith the low t ire press ure
telltale . When the system detects a ma lfunction , the telltale wi ll
fl ash for approximately
one minute and then remain continuously
illum inated . This sequence will continue upon subsequent vehicle
start -ups as long as the ma lfunction exists.
When the ma lfunctio n indicator is ill um inated, the system may not
be ab le to detect or signa l low tire pressure as intended . TPMS
malfunctions
may occ ur for a var iety of reasons, inc lud ing the
installation
of replacement or alternate tires or wheels on the
vehic le that p revent the TPMS from f unctioning pr oper ly. Always
check the TPMS malfunction
tellta le after replac ing one or more
t ires or whee ls on yo ur ve hicle to ens ure t hat the replacement or
alternate tires and wheels allow the TPMS to continue to function
proper ly. •
Introduction
The tire pressure monit oring system m onitors air pressure
in all four road wheels and the spare tire* while the
vehicle is movin g.
As soon as t he tire pressure moni to ring system se nses a signi fi cant
loss of air pressure in one or severa l tires, text messages and yellow
symbo ls appear in t he inst rume nt cluster d isplay to alert t he driver .
The
(l)
warning light in the instrument cluster comes on when the
t ire is sig ni f icant ly underinflated
=> page
20 .
Controls and equip-
ment
Driv e r information
di s play
The warning light
U)
also ill uminates in the case of a system
mal f u ncti o n.
The system continuous ly receives rad io signa ls from sensors
located inside each tire .
Be aware t hat t ire pressu re is also dependen t on t he t empera t ure of
the tire . For every 18 °F (1 O °C) increase in tire temperature, tire pres-
sure increases by about 1.5 psi (0.1 bar). The t ire warms up wh ile the
vehicle is moving and t ire pressure rises . So you should adjust tire
pressure only when the t ir es are cold, when the temperature of the
tires is roughly the same as the ambient air temperature .
In order to keep the tire pressure monitoring
system properly cali -
brated, tire pressure on all f our tires and on the spare tire* should
be checked at regular intervals, adjusted if necessary and saved in
the proper setti ng (recommended pressure) => page 44.
The tire pressure is shown on the tire pressure label. On USA vehi -
cles, the tire p ressure labe l is located on the drive r's side B-p ill ar. On
Canada vehicles, the tire pressure labe l is located either on the
driver's side B-pillar o r inside the f uel fi ll er flap. The t i re press ure
label lists t he recommended cold tire inflat ion pressures for t he
vehic le at its maximum capacity weight and the tires that were on
your ve hicle at the time it was manufactured . For recommended tire
pressures for normal load condit ions, please see chapter
=> page
328 .
The current temperatures and pressure of your tires can be viewed
in t he M M I => page 43.
&
WARNING
•
When the tire pressure monitoring system warning light is lit,
one or more of your tires is significantly under-inflated . You should
stop and check your tires as soon as possible, and inflate them to
the proper pressure as indicated on the vehicle's tire pressure
label
=> page 328 .
Driving on a significantly under-inflated tire
causes the tire to overheat and can lead to tire failure. Under -infla -
~
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