User Manual - Page 193

For 2021 WRANGLER.

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STARTING AND OPERATING 191
(Continued)
(Continued)
Refilling With Containers
Proceed as follows:
Check the expiration date.
Read the advice for use on the label
before pouring the content of the bottle
into the DEF tank.
If systems which cannot be screwed in
(e.g. tanks) are used for refilling, after the
indication appears on the instrument
panel display Ú page 107 fill the DEF
tank with no more than 2 Gallons
(8 liters).
If containers which can be screwed to the
filler are used, the reservoir is full when
the DEF level in the container stops
pouring out. Do not proceed further.
3. Stop filling the DEF tank immediately when
any of the following happen: DEF stops
flowing from the fill bottle into the DEF fill
inlet, DEF splashes out the fill inlet, or a DEF
pump nozzle automatically shuts off.
4. Reinstall cap onto DEF fill inlet.
CAUTION!
To avoid DEF spillage, and possible
damage to the DEF tank from overfilling, do
not “top off” the DEF tank after filling.
DO NOT OVERFILL. DEF will freeze below
12ºF (-11ºC). The DEF system is designed
to work in temperatures below the DEF
freezing point, however, if the tank is over-
filled and freezes, the system could be
damaged.
When DEF is spilled, clean the area imme-
diately with water and use an absorbent
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 damage to your
engine, including but not limited to failure
of the fuel pump and injectors.
CAUTION! (Continued)
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 contam-
inate the entire DEF system and will require
replacement. If owners use a container,
funnel or nozzle when refilling the tank, it
should either be new or one that is has only
been used for adding DEF. Mopar provides
an attachable nozzle with its DEF for this
purpose.
CAUTION! (Continued)
4
21_JL_OM_EN_USC_t.book Page 191
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