Jeep grand cherokee 2017 User Manual page 190

DEF Fill Procedure
NOTE:
Refer to "Fluids And Lubricants" in the
"Technical Specifications" section for the
correct fluid type.
1. Remove cap from DEF fill inlet (located in
fuel door).
DEF Filler Cap And Fuel Fill
1 — Diesel Fuel Filler
2 — Diesel Exhaust Fluid Filler
188
2. Insert DEF fill adapter/nozzle into DEF fill
inlet.
NOTE:
• The DEF gauge may take up to five
seconds to update after adding a gallon
or more of Diesel Exhaust Fluid (DEF)
to the DEF tank. If you have a fault
related to the DEF system, the gauge
may not update to the new level. See
your authorized dealer for service.
• The DEF gauge may also not immedi-
ately update after a refill if the tem-
perature of the DEF fluid is below 12F
(-11C). The DEF line heater will possi-
bly warm up the DEF fluid and allow the
gauge to update after a period of run
time. Under very cold conditions, it is
possible that the gauge may not reflect
the new fill level for several drives.
CAUTION!
• To avoid DEF spillage, and possible dam-
age to the DEF tank from overfilling, do
not "top off" the DEF tank after filling.
CAUTION!
• DO NOT OVERFILL. DEF will freeze be-
low 12ºF (-11ºC). The DEF system is
designed to work in temperatures below
the DEF freezing point, however, if the
tank is overfilled and freezes, the system
could be damaged.
• When DEF is spilled, clean the area
immediately with water and use an ab-
sorbent material to soak up the spills on
the ground.
• Do not attempt to start your engine if
DEF is accidentally added to the diesel
fuel tank as it can result in severe dam-
age to your engine, including but not
limited to failure of the fuel pump and
injectors.
• Never add anything other than DEF to the
tank – especially any form of hydrocarbon
such as diesel fuel, fuel system additives,
gasoline, or any other petroleum-based
product. Even a very small amount of
these, less than 100 parts per million or
less than 1 oz. per 78 gallons (295 liters)
will contaminate the entire DEF system
and will require replacement. If owners