Dodge RAM 2500 2022 Owner's Manual page 111

5. Speedometer
Indicates vehicle speed.

6. Diesel Exhaust Fluid (DEF) Gauge
The DEF Gauge displays the actual level of

Diesel Exhaust Fluid in the DEF tank. DEF is
required to maintain normal vehicle opera-
tion and emissions compliance. If some-
thing is wrong with the gauge, a DEF
Warning Message or Malfunction Indicator
Light (MIL) will be displayed. More informa-
tion is available in the instrument cluster
display section under the heading of DEF
Warning Messages.
7. Fuel Gauge
The pointer shows the level of fuel in the

fuel tank when the ignition switch is in the
ON/RUN position.
The fuel pump symbol points to

the side of the vehicle where the
fuel filler door is located.
GETTING TO KNOW YOUR INSTRUMENT PANEL
NOTE:
The gauge may take up to five seconds to

update after adding a gallon or more of 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 an authorized dealer for service.
The DEF gauge may also not immediately

update after a refill if the temperature of the
DEF fluid is below 39°F (4°C). The DEF tank
heater will 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.
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