Dodge 2009 Durango - Manual (Page 214)

NOTE: The ESP control system will make buzzing or
clicking sounds when it is actively operating.
23. Malfunction Indicator Light (MIL)
The Malfunction Indicator Light (MIL) is part of
an onboard diagnostic system which monitors
the emissions and engine control system. If the
vehicle is ready for emissions testing, the MIL will come
on when the ignition is first turned on and remain on, as
a bulb check, until the engine is started. If the vehicle is
not ready for emissions testing, the MIL will come on
when the ignition is first turned on and remain on for
15 seconds, then blink for 10 seconds, and remain on until
the vehicle is started. If the MIL does not come on during
starting, see an authorized dealer as soon as possible.
If the MIL comes on and remains on while driving, it
suggests a potential engine control problem and the need
for system service.
Although your vehicle will usually be drivable and not
need towing, see an authorized dealer for service as soon
as possible.
CAUTION!
Prolonged driving with the MIL on could cause
damage to the engine control system. It also could
affect fuel economy and driveability.
If the MIL is flashing, severe catalytic converter
damage and power loss will soon occur. Immediate
service is required. See an authorized dealer for
service immediately.
24. Tire Pressure Monitoring Telltale Light
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
212 UNDERSTANDING YOUR INSTRUMENT PANEL