Jeep Wrangler: Yellow Warning Lights / Service 4WD Warning Light — If Equipped
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. We recommend you drive to the
nearest service center and have the vehicle
serviced immediately.
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...
Other information:
HDC is intended for low speed off-road driving
while in 4WD Low. HDC maintains vehicle speed
while descending hills during various driving
situations. HDC controls vehicle speed by
actively controlling the brakes.
HDC has three states:
Off (feature is not enabled and will not
activate)...
You must press and hold the brake pedal while
shifting out of PARK.
CAUTION!
Shift into or out of PARK or REVERSE only
after the vehicle has come to a complete
stop.
Do not shift between PARK, REVERSE,
NEUTRAL, or DRIVE when the engine is
above idle speed...