Jeep Wrangler: Yellow Warning Lights / AdBlue® (UREA) Injection System Failure Warning Light — If Equipped
This warning light will
illuminate along
with a dedicated message on the
display (if equipped) if an unknown
fluid not conforming with acceptable characteristics is inserted, or if an
average
consumption of AdBlue® (UREA) over 50% is
detected. Contact an authorized dealer as soon
as possible.
If the problem is not solved, a specific message
will appear on the Instrument Cluster Display
whenever a certain threshold is reached until it
will no longer be possible to start the engine.
When about 125 miles (200 km) are remaining
before the AdBlue® (UREA) tank is empty, a
continuous dedicated message will appear on
the instrument panel, accompanied by a chime.
The MIL is a part of an Onboard
Diagnostic System called OBD II that
monitors engine and automatic
transmission control systems. This
warning light will illuminate when the ignition is
in the ON/RUN position before engine start...
This
warning light will illuminate to
signal a fault with the 4WD system. If
the light stays on or comes on during
driving, it means that the 4WD system
is not functioning properly and that service is
required...
Other information:
Prior to engine shut down, the system will check
many safety and comfort conditions to see if
they are fulfilled. Situations when the engine
will not stop include (but not limited to):
Driver’s seat belt is not buckled.
Outside temperature is less than 10°F
(–12°C) or greater than 109°F (43°C)...
The Tire Pressure Monitoring System (TPMS)
will warn the driver of a low tire pressure based
on the vehicle recommended cold placard
pressure.
NOTE:
The alert warning on the cluster will stay on until
the tire is inflated to the placard pressure.
The tire pressure will vary with temperature by
approximately 1 psi (7 kPa) for every 12°F
(6...