Jeep Wrangler: NORMAL OPERATION — DIESEL ENGINE / Stopping The Engine
After full load operation, idle the engine for a
few minutes before shutting it down. This idle
period will allow the lubricating oil and coolant
to carry excess heat away from the
turbocharger.
NOTE:
Refer to the following chart for proper engine
shutdown.

NOTE:
Under certain conditions the engine fan will run
after the engine is turned off. These conditions
are under high load and high temperature
conditions.
Avoid prolonged idling, long periods of idling
may be harmful to your engine because
combustion chamber temperatures can drop so
low that the fuel may not burn completely...
To reduce the potential for engine and
transmission overheating in high ambient
temperature conditions, take the following
actions:
City Driving — When stopped, shift the transmission
into NEUTRAL (N) and increase
engine idle speed...
Other information:
If you drive on salted or dusty roads or if you
drive near the ocean, hose off the undercarriage
at least once a month.
It is important that the drain holes in the
lower edges of the doors, rocker panels, and
trunk be kept clear and open.
If you detect any stone chips or scratches in
the paint, touch them up immediately...
The ASSIST Button is used to automatically
connect you to any one of the following support
centers:
Roadside Assistance – If you get a flat tire, or
need a tow, just push the ASSIST button and
you’ll be connected to someone who can
help...