Dodge RAM 1500 User Manual page 206

6 . 7 L C U M M I N S ® D I E S E L
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 occurance 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 maximum 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 vehicle
operation at a maximum speed of 5 MPH (8 km/H).
5 MPH Max Speed Refill DEF — The vehicle will only be capable of a maximum speed
of 5 MPH (8 km/H) when this message is displayed. Add up to 2.5 gallons (7.5 Liters)
of DEF to the tank to restore normal vehicle operation.
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 four 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
250 miles (402 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
serviced. We recommend you drive to your nearest authorized dealer and have your
vehicle serviced immediately.
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