Jeep grand cherokee 2015 User Manual page 185

Adding Diesel Exhaust Fluid
The DEF gauge (located in the DID) will display the level of DEF remaining in the
tank.
Completely fill the DEF tank through the diesel exhaust fluid fill location (located
behind the fuel door) at every maintenance interval or before if prompted by the
Driver Information Display (DID).
NOTE:
• The 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 immediately update after a refill if the temperature of the
DEF fluid is below 12F (-11C). The DEF line heater will possibly 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.
NOTE:
• Driving conditions (altitude, vehicle
speed, load, etc.) will effect the amount
of DEF that is used in your vehicle.
• Since DEF will begin to freeze at 12°F
(-11°C), your vehicle is equipped with
an automatic DEF heating system.
This allows the DEF injection system to
operate properly at temperatures be-
low 12°F (-11°C).
1 — Diesel Fuel Filler
2 — Diesel Exhaust Fluid Filler
DIESEL
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