vehicle manufacturer on the vehicle placard or tire inflation pressure label.
(If your vehicle has tires of a different size than the size indicated on the

vehicle placard or tire inflation pressure 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) that illuminates a low

tire pressure telltale when one or more of your tires is significantly

under-inflated.
Accordingly, when the low tire pressure telltale illuminates, 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 efficiency and tire

tread life, and may affect the vehicle’s handling and stopping ability.
Please note that the TPMS is not a substitute for proper tire maintenance,

and it is the driver’s responsibility to maintain correct tire pressure, even if

under-inflation has not reached the level to trigger illumination of the TPMS

low tire pressure telltale.
Your vehicle has also been equipped with a TPMS malfunction indicator to

indicate when the system is not operating properly. The TPMS malfunction

indicator is combined with the low tire pressure telltale. When the system

detects a malfunction, the telltale will flash for approximately one minute

and then remain continuously illuminated. This sequence will continue upon

subsequent vehicle start-ups as long as the malfunction exists.
When the malfunction indicator is illuminated, the system may not be able

to detect or signal low tire pressure as intended.
TPMS malfunctions may occur for a variety of reasons, including the

installation of replacement or alternate tires or wheels on the vehicle that

prevent the TPMS from functioning properly.
Always check the TPMS malfunction telltale after replacing one or more

tires or wheels on your vehicle to ensure that the replacement or alternate

tires and wheels allow the TPMS to continue to function properly.

Testing of Readiness Codes

Your vehicle has “readiness codes” as part of the onboard self-diagnostic system.

Some states refer to these codes as a test to see if 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

readiness 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 codes 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 highway with

the vehicle in Drive. Do not use cruise control. When traffic allows, drive for 90

seconds without using the accelerator pedal. (vehicle speed may vary slightly;

this is OK.) If you cannot do this for a continuous 90 seconds because of traffic

conditions, 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, you may be

requested to return at a later date to complete the test, or see your dealer.

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