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. If
your vehicle has tires of a different size than the size
indicated on the vehicle placard or tire inflation pres-
sure label, you should determine the proper tire infla-
tion pressure for those tires.
As an added safety feature, your vehicle has been
equipped with a TPMS that illuminates a low tire pres-
sure telltale when one or more of your tires is signifi-
cantly underinflated. 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 underinflated
tire causes the tire to overheat and can lead to tire fail-
ure. Underinflation 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 underinflation
has not reached the level to trigger illumination of the
TPMS low tire pressure telltale.
Your vehicle has also been equipped with a TPMS mal-
function 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 continu-
ously illuminated. This sequence will continue upon
subsequent vehicle start-ups as long as the malfunc-
tion exists. When the malfunction indicator is illumi-
nated, 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 prop-
erly. 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.
CAUTION!
The TPMS has been optimized for the original equip-
ment tires and wheels. TPMS pressures and warning
have been established for the tire size equipped on
your vehicle. Undesirable system operation or sensor
damage may result when using replacement equip-
ment that is not of the same size, type, and/or style.
Aftermarket wheels can cause sensor damage. Using
aftermarket tire sealants may cause the Tire Pressure
Monitoring System (TPMS) sensor to become inoper-
able. After using an aftermarket tire sealant it is rec-
ommended that you take your vehicle to an autho-
rized dealer to have your sensor function checked.
YELLOW INDICATOR LIGHTS
Air Suspension Alternate Trailer Height
Indicator Light — If Equipped
This light will illuminate when the air suspen-
sion system is set to the Alternate Trailer
Height setting
page 113.
Air Suspension Bed Lowering Mode
Indicator Light — If Equipped
This light will illuminate when the Bed Lower-
ing mode procedure is complete
page 113.
Air Suspension Payload Protection
Indicator Light — If Equipped
This indicator light will illuminate to indicate
that the maximum payload may have been
exceeded or load leveling cannot be
achieved at its current ride height. Protection
mode will automatically be selected in order to “pro-
tect” the air suspension system, air suspension adjust-
ment is limited due to payload.
Air Suspension Ride Height Raising
Indicator Light — If Equipped
This light will blink and alert the driver that
the vehicle is changing to a higher ride
height
page 113.
Air Suspension Ride Height Lowering
Indicator Light — If Equipped
This light will blink and alert the driver that
the vehicle is changing to a lower ride height
page 113.
Cargo Indicator Light — If Equipped
This indicator light will illuminate when the
cargo light is activated by pushing the cargo
light button on the headlight switch.
GETTING TO KNOW YOUR INSTRUMENT PANEL 97
3
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