Diesel Exhaust Fluid (Def) Fault Warning Messages; Battery Saver On/Battery Saver Mode Message - Electrical Load Reduction Actions - If Equipped - Dodge RAM 1500 2020 Owner's Manual

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100
GETTING TO KNOW YOUR INSTRUMENT PANEL
D
E
F
(DEF) F
IESEL
XHAUST
LUID
W
M
ARNING
ESSAGES
There are different messages which are displayed if the
vehicle detects that the Diesel Exhaust Fluid (DEF) system
has been filled with a fluid other than DEF, has
experienced component failures, or when tampering has
been 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 and each
time the vehicle is started. The message will be accom-
panied by a single chime and the Malfunction Indicator
Light. We recommend you drive to the nearest autho-
rized dealer and have your vehicle serviced immedi-
ately. If not corrected in 50 miles, vehicle will enter the
"Engine Will not restart in XXX mi Service DEF See
dealer" warning stage and message.
 Incorrect DEF Detected See Dealer — This message will
display if the DEF system has detected the incorrect
fluid has been introduced to the DEF tank. The
message will be accompanied by a single chime. We
recommend you drive to your nearest authorized
dealer and have your vehicle serviced immediately. If
not corrected in 30 miles, vehicle will enter the "Engine
Will not restart in XXX mi Service DEF See dealer"
warning stage and message.
 Engine Will Not Restart in XXX mi Service DEF See
Dealer — This message is first displayed if the fault
detected is not serviced after 50 miles of operation. It
is also displayed at 150 miles, 125 miles and
100 miles. System service is required within the
displayed mileage. The message will be displayed
AULT
during vehicle start up with an updated distance
mileage, and it will be accompanied by a single chime.
Starting at 100 miles, remaining range will be continu-
ously displayed while operating the vehicle. Chimes will
also accompany the 75, 50 and 25 mile remaining
distances. We recommend you drive to the nearest
authorized dealer and have your vehicle serviced
immediately.
 Engine Will Not Restart Service DEF System See
Dealer — This message will display if DEF system issue
detected is not serviced during the allowed period.
Your engine will not restart unless your vehicle is
serviced by an authorized dealer. This message will be
displayed when under 1 mile until engine will not start
and each time the vehicle is started, and will be contin-
uously displayed. The message will be accompanied by
a single chime. Your Malfunction Indicator Light will be
continuously illumined. We highly recommend you
drive to the nearest authorized dealer if the message
appears while engine is running.
 Engine Will Not Start Service DEF System See Dealer —
This message will display when the fault detected is not
serviced after the Engine will not restart Service DEF
System See Dealer message is displayed on the next
subsequent restart. Your engine will not start unless
your vehicle is serviced by an authorized dealer. The
message will be accompanied by a single chime. Your
Malfunction Indicator Light will be continuously illumi-
nated. If the message appears and you can not start
the engine, we recommend having your vehicle towed
to the nearest authorized dealer immediately.
B
S
O
/B
ATTERY
AVER
N
ATTERY
M
M
— E
ODE
ESSAGE
LECTRICAL
R
A
— I
EDUCTION
CTIONS
F
This vehicle is equipped with an Intelligent Battery Sensor
(IBS) to perform additional monitoring of the electrical
system and status of the vehicle battery.
In cases when the IBS detects charging system failure, or
the vehicle battery conditions are deteriorating, electrical
load reduction actions will take place to extend the driving
time and distance of the vehicle. This is done by reducing
power to or turning off non-essential electrical loads.
Load reduction is only active when the engine is running.
It will display a message if there is a risk of battery
depletion to the point where the vehicle may stall due to
lack of electrical supply, or will not restart after the current
drive cycle.
When load reduction is activated, the message "Battery
Saver On Some Systems May Have Reduced Power" will
appear in the instrument cluster.
These messages indicate the vehicle battery has a low
state of charge and continues to lose electrical charge at
a rate that the charging system cannot sustain.
NOTE:
 The charging system is independent from load reduc-
tion. The charging system performs a diagnostic on the
charging system continuously.
 If the Battery Charge Warning Light is on it may indicate
a problem with the charging system. Refer to "Battery
Charge Warning Light" in "Getting To Know Your Instru-
ment Panel" for further information.
S
AVER
L
OAD
E
QUIPPED

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