2016 RAM CHASSIS CAB torque

Service 4WD Indicator Light — If Equipped
Yellow Telltale
Light What It Means
Service 4WD Indicator Light
If the light stays on or comes on during driving, it means that the 4WD system is not func-
tioning properly and that service is required. We recommend you drive to the nearest ser-
vice center and have the vehicle serviced immediately.
4 Low Indicator Light — If Equipped
Yellow Telltale
Light What It Means
4 Low Indicator Light
This light alerts the driver that the vehicle is in the four-wheel drive LOW mode. The front and
rear driveshafts are mechanically locked together forcing the front and rear wheels to rotate at the
same speed. Low range provides a greater gear reduction ratio to provide increased torque at the
wheels.
Refer to “Four-Wheel Drive Operation — If Equipped” in “Starting And Operating” for fur-
ther information on four-wheel drive operation and proper use.262 UNDERSTANDING YOUR INSTRUMENT PANEL

Units
After pressing the “Units” button on the touchscreen you
may select each unit of measure independently displayed
in the Driver Information Display (DID), and navigation
system (if equipped). The following selectable units of
measure are listed below:
• Speed
Select from: “MPH” or “km/h.”
• Distance
Select from: “mi” or “km.”
• Fuel Consumption
Select from: “MPG” (US), “MPG” (UK), “L/100 km” or
“km/L.”
• Capacity
Select from: “gal” (US), “gal” (UK), “L/100 km” or “L.” • Pressure
Select from: “psi,” “kPa,” or “bar.”
• Temperature
Select from: “°C,” or “°F.”
• Power
Select from: “HP” (US), “HP” (UK), and “kW.”
• Torque
Select from: “lb-ft” or “Nm.”
Voice
After pressing the “Voice” button on the touchscreen the
following settings will be available:
• Voice Response Length
When in this display, you may change the Voice Re-
sponse Length settings. To change the Voice Response316 UNDERSTANDING YOUR INSTRUMENT PANEL

• Temperature
Select from: “°C,” or “°F.”
• Power
Select from: “HP” (US), “HP” (UK), and “kW.”
• Torque
Select from: “lb-ft” or “Nm.”
After the desired setting has been selected, press the back
arrow/Done button on the touchscreen to return to the
previous menu.
Voice
After pressing the “Voice” button on the touchscreen the
following settings will be available: • Voice Response Length
When in this display, you may change the Voice Re-
sponse Length settings. To change the Voice Response
Length, select from the “Brief” or “Detailed” buttons on
the touchscreen until a check-mark appears next to the
setting, showing that setting has been selected.
• Show Command List
When in this display, you may change the Show Com-
mand List settings. To change the Show Command List
settings, select from the “Always,” “With Help” or
“Never” buttons on the touchscreen until a check-mark
appears next to the setting, showing that setting has been
selected. 4UNDERSTANDING YOUR INSTRUMENT PANEL 333

If the transmission temperature exceeds normal operat-
ing limits, the powertrain controller will modify the
transmission shift schedule and expand the range of
torque converter clutch engagement. This is done to
prevent transmission damage due to overheating.
If the transmission becomes extremely hot or is in danger
of overheating, the “Transmission Temperature Warning
Light” may illuminate and the transmission may operate
differently until the transmission cools down.
NOTE: Use caution when operating a heavily loaded
vehicle at low speeds (such as towing a trailer up a steep
grade, or in stop-and-go traffic) during hot weather. In
these conditions, torque converter slip can impose a
significant additional heat load on the cooling system.
Downshifting the transmission to the lowest possible
gear (when climbing a grade), or shifting to NEUTRAL
(when stopped in heavy traffic) can help to reduce this
excess heat generation. During cold temperatures, transmission operation may
be modified depending on engine and transmission
temperature as well as vehicle speed. This feature im-
proves warm up time of the engine and transmission to
achieve maximum efficiency. Engagement of the torque
converter clutch is inhibited until the transmission fluid
is warm (refer to the “Note” under “Torque Converter
Clutch” in this section).
On models with 66RFE transmission, top overdrive gear
is also inhibited until the transmission fluid is warm, and
during extremely cold temperatures (-16°F [-27°C] or
below), operation may briefly be limited to first and
direct gears only. On trucks with AS66RC transmission,
fifth and sixth gears may be inhibited briefly on cold
starts below 41°F (5°C), and during very cold tempera-
tures (-4°F [-20°C] or below), operation may briefly be
limited to third gear only. During this condition, the
ability of the vehicle to accelerate under heavily loaded414 STARTING AND OPERATING

desired, the switch must be pushed each time the engine
is started.
WARNING!Do not use the “TOW/HAUL” feature when driving
in icy or slippery conditions. The increased engine
braking can cause the rear wheels to slide, and the
vehicle to swing around with the possible loss of
vehicle control, which may cause an accident possi-
bly resulting in personal injury or death.
Torque Converter Clutch
A feature designed to improve fuel economy has been
included in the automatic transmission on your vehicle.
A clutch within the torque converter engages automati-
cally at calibrated speeds. This may result in a slightly
different feeling or response during normal operation in the upper gears. When the vehicle speed drops or during
some accelerations, the clutch automatically disengages.
NOTE:
• The torque converter clutch will not engage (and
66RFE-equipped trucks will not shift to sixth gear),
until the transmission fluid and engine coolant are
warm [usually after 1 to 3 miles (2 to 5 km) of driving].
Because engine speed is higher when the torque con-
verter clutch is not engaged, it may seem as if the
transmission is not shifting properly when cold. This is
normal. Using the Electronic Range Select (ERS) shift
control, when the transmission is sufficiently warm,
will demonstrate that the transmission is able to shift
into and out of Overdrive.
• If the vehicle has not been driven for several days, the
first few seconds of operation after shifting the trans-
mission into gear may seem sluggish. This is due to the
fluid partially draining from the torque converter into 5STARTING AND OPERATING 419

the transmission. This condition is normal and will not
cause damage to the transmission. The torque con-
verter will refill within five seconds after starting the
engine.
POWER TAKE OFF OPERATION — IF EQUIPPED
(CHASSIS CAB ONLY)
This vehicle when equipped with PTO Prep and the
AS66RC automatic six-speed, will allow for an aftermar-
ket upfit with a transmission driven PTO (power take
off). The customer will have the ability to operate the
PTO in either a “stationary” or “mobile” mode. The
vehicles will be factory set to the “stationary” mode. To
select “mobile” mode, you will need to enter the com-
mercial vehicle menu on the EVIC/DID screen and select
mobile PTO mode. Details of the PTO selection modes
and further PTO information is available at the Ram
Truck Bodybuilders web site. www.rambodybuilder.com AS66RC Six-Speed Automatic Transmission Only
The PTO drive gear (part of the AS66RC) operates at
torque converter turbine speed. The turbine speed will be
less than engine speed when the torque converter clutch
is not engaged and will be same as engine speed when
the torque converter clutch is engaged.
Stationary Mode
To operate the PTO in this mode the vehicle must meet
the following conditions:
• Be in PARK position (vehicles equipped with auto-
matic transmission.)
• PTO switch has been activated.
• Parking brake applied (vehicles equipped with
manual transmission).
• Brake pedal must not be applied.420 STARTING AND OPERATING

• Vehicle engine must be running.
• No vehicle, brake or clutch switch faults present.
• PTO must be correctly installed using the vehicle
provided circuits.
The Electronic Vehicle Information Center (EVIC) or
Driver Information Display (DID) will display a  PTO
On  message for five seconds if the above conditions are
met. Otherwise, the EVIC/DID will display a message
 To Operate PTO Shift To Park  indicating what operator
action should be taken to engage the PTO mode.
The customer has the choice to operate the PTO by
utilizing the cruise control switches or by utilizing a
remote control (provided by the PTO supplier). To oper-
ate the feature using the cruise control switches, the
customer must first activate the PTO switch which will
turn on the PTO. In order to increase or decrease the
engine idle speed, to optimize the PTO function, the
“RESUME/ACCEL” and “DECEL” cruise switches can be used respectively. To disengage PTO operation and
return to “standard vehicle operation” simply toggle the
PTO switch to the OFF position.
The torque converter clutch (TCC) will automatically
engage at engine speeds above 1,200 RPM (engine speed)
in PTO stationary mode. Once engaged, the TCC will
remain applied and will not disengage until the engine
speed falls below 1,000 RPM. TCC engagement is desir-
able for certain types of PTO applications (Automatic
Transmission Only).
To operate the PTO via a remote switch, the customer
must make sure the above conditions are met. It is vital
for proper operation that the PTO and remote have been
installed correctly, paying special attention to ensure the
vehicle provided wiring has been connected properly.
This is the responsibility of the installer of the PTO and
switches/remote system. It is the responsibility of the
PTO manufacturer to ensure that their electrical (switches 5STARTING AND OPERATING 421

• Neutral (NEUTRAL)
This electronically shifted transfer case is designed to be
driven in the two-wheel drive position (2WD) for normal
street and highway conditions on dry, hard surfaced
roads.
When additional traction is required, the transfer case
4WD LOCK and 4WD LOW positions can be used to
maximize torque to the front driveshaft, forcing the front
and rear wheels to rotate at the same speed. This is
accomplished by rotating the 4WD Control Switch to the
desired position.
Refer to “Shifting Procedure” in this section for specific
shifting instructions.
The 4WD LOCK and 4WD LOW positions are designed
for loose, slippery road surfaces only. Driving in the 4WD
LOCK and 4WD LOW positions on dry hard surfaced
roads may cause increased tire wear and damage to the
driveline components. NOTE: The transfer case NEUTRAL position is selected
by pushing the button located on the lower left hand
corner of the 4WD Control Switch. The transfer case
NEUTRAL position is to be used for recreational towing
only. Refer to “Recreational Towing” in “Starting And
Operating” for further information.
Transfer Case Position Indicator Lights
The Transfer Case Position Indicator Lights (4WD and
4LOW) are located in the instrument cluster and indicate
the current and desired transfer case selection. When you
select a different transfer case position, the indicator
lights will do the following:
If All Shift Conditions Are Met:
1. The current position indicator light will turn OFF.
2. The selected position indicator light will flash until the
transfer case completes the shift.428 STARTING AND OPERATING