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of 5 MPH (8 km/H) if the DEF system is not
serviced within less than 200 miles
(322 km) of the fault being detected.
When the DEF system needs to be serviced
the following warnings will display:
DEF Low Refill Soon
— This message will
display when the low level is reached,
during vehicle start up, and with increased
frequency during vehicle operation. It will
be accompanied by a single chime.
Approximately 5 gallons (19 Liters) of DEF
is required to refill the tank when this
message is initially displayed. on pickup
applications, and approximately 7 gallons
(26 Liters) are required on chassis-cab
applications.
Speed Limited to 5 MPH in XXX mi Refill DEF
—
This message will continuously display if the
“DEF Low Refill Soon” message is ignored,
and the frequency of occurrence of the
chime will increase unless up to 2 gallons
(7.5 Liters) of DEF is added to the tank.
5 MPH Max Speed on Restart, Long Idle or
Refuel Refill DEF
— This message will
continuously display when the counter
reaches zero, and will be accompanied by
a periodic chime.
The vehicle will only be capable of a max
-
imum speed of 5 MPH upon the first of
the following conditions to occur:
If the vehicle is shutoff and restarted.
If the vehicle is idled for an extended
period of time, approximately one hour
or greater.
If the system detects that the level of
fuel in the tank has increased.
Add a minimum of 2 gallons (7.5 Liters)
of DEF to the tank in order to avoid vehi
-
cle operation at a maximum speed of 5
MPH (8 km/H).
NOTE:
A minimum of 2 gallons (7.5 Liters) may be
required to restore normal vehicle operation.
Although the vehicle will start normally and
can be placed in gear after this message has
been initially displayed, extreme caution
should be utilized since the vehicle will only
be capable of maneuvering at a maximum
speed of 5 MPH (8 km/H).
Diesel Exhaust Fluid (DEF) Fault Warning
Messages
There are five different messages which are
displayed if the vehicle detects that the DEF
system has been filled with a fluid other than
DEF, has experienced component failures, or
when tampering has been detected. The
vehicle may be limited to a maximum speed
of 5 MPH (8 km/H) if the DEF system is not
serviced within less than 200 miles
(322 km) of the fault being detected.
When the DEF system needs to be serviced
the following warnings will display:
Service DEF System See Dealer
— This
message will display when the fault is
initially detected, each time the vehicle is
started, and periodically during driving.
The message will be accompanied by a
single chime. We recommend you drive to
your nearest authorized dealer and have
your vehicle serviced as soon as possible.
5 MPH Max Speed in 150 mi Service DEF
System See Dealer
— This message will
display if the DEF system has not been
serviced after the “Service DEF System –
See Dealer” message is displayed. This
message will continuously display until
the mileage counter reaches zero, and will
be accompanied by a periodic chime. The
message will continue to countdown until
it reaches zero unless the vehicle is
2019_RAM_2500_3500_UG_USA=GUID-8BBFE451-BF24-4E82-808A-AE2460D39A05=1=en=.book Page 69
Summary of Contents for 2500 2019
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