MAINTENANCE
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M
AINTENANCE
n Temperature
The temperature grades are A (the highest), B, and C, representing the\
tire’s
resistance to the generation of heat and its ability to dissipate heat w\
hen tested
under controlled conditions on a specified indoor laboratory test whee\
l. Sustained
high temperature can cause the material of the tire to degenerate and re\
duce
tire life, and excessive temperature can lead to sudden tire failure. Th\
e grade C
corresponds to a level of performance which all passenger car tires must\
meet
under the Federal Motor Vehicle Safety Standard No. 109. Grades B and A represent
higher levels of performance on the laboratory test wheel than the minim\
um required
by law.
W
ARNING: The temperature grade for this tire is established for a tire that is
properly inflated and not overloaded. Excessive speed, underinflatio\
n, or excessive
loading, either separately or in combination, can cause heat buildup and\
possible
tire failure.Testing of Readiness Codes
Your vehicle has readiness codes as part of the onboard self-diagnostic s\
ystem. Some
states use these codes for testing to verify your vehicle’s emissions components are
working properly. The codes may not be read if you go through the testing just after the\
battery has gone dead or been disconnected.
To check if they are set, turn the vehicle on without starting the engine\
. The malfunction
indicator lamp will come on for several seconds. If it goes off, the rea\
diness codes are
set. If it blinks five times, the readiness codes are not set.
If you are required to have your vehicle tested before the readiness cod\
es are set,
prepare the vehicle for retesting by doing the following:
1.
Fill the gas tank to approximately 3/4 full.
2.
Park the vehicle and leave the engine off for 6 hours or more.
3.
Make sure the ambient temperature is between 40°F and 95°F (4°\
C and 35°C).
4.
Start the engine without touching the accelerator pedal, and let it idle\
for 20
seconds.
5.
Keep the vehicle in Park (P). Increase the engine speed to 2,000 rpm, \
and hold it
there for about 3 minutes.
6.
Let the engine idle with your foot off the accelerator for 20 seconds.
7.
Select a nearby, lightly traveled major highway where you can maintain a speed of
50 to 60 mph (80 to 97 km/h) for at least 20 minutes. Drive on the hig\
hway with the
vehicle in Drive. Do not use cruise control. When traffic allows, driv\
e for 90 seconds
without using the accelerator pedal. (V
ehicle speed may vary slightly; this is OK.)
If you cannot do this for a continuous 90 seconds because of traffic c\
onditions, drive
for at least 30 seconds, then repeat two more times (for a total of 90 \
seconds).
8.
Drive in city/suburban traffic for at least 10 minutes. When traffic\
conditions allow,
let the vehicle coast for several seconds without using the accelerator \
pedal or the
brake pedal.
9.
Park the vehicle and leave the engine off for 30 minutes.
The readiness codes are erased when the battery is disconnected, and set\
again only
after several days of driving under a variety of conditions.
If a testing facility determines that the readiness codes are not set, y\
ou may be
requested to return at a later date to complete the test, or see your de\
aler.