2012 RAM CHASSIS CAB tow

• Engine Temperature Warning Light
This light warns of an overheated engine condi-
tion. As temperatures rise and the gauge ap-
proaches H, this indicator will illuminate and a
single chime will sound after reaching a set threshold.
Further overheating will cause the temperature gauge to
pass H, the indicator will continuously flash and a
continuous chime will occur until the engine is allowed
to cool.
If the light turns on while driving, safely pull over and
stop the vehicle. If the A/C system is on, turn it off. Also,
shift the transmission into NEUTRAL and idle the ve-
hicle. If the temperature reading does not return to
normal, turn the engine off immediately and call for
service. Refer to “If Your Engine Overheats” in “What To
Do In Emergencies” for more information. • SERV 4WD
The SERV 4WD light monitors the electric shift
4WD system. If the SERV 4WD light stays on or
comes on during driving, it means that the
4WD system is not functioning properly and
that service is required.
• Electronic Stability Control (ESC) OFF Indicator
Light — If Equipped
This light indicates the Electronic Stability Con-
trol (ESC) is off.
• Transmission Temperature Light
This light indicates that there is excessive trans-
mission fluid temperature that might occur
with severe usage such as trailer towing. It may
also occur when operating the vehicle in a high
torque converter slip condition, such as 4-wheel-drive
operation (e.g., snow plowing, off- road operation). If this 4 UNDERSTANDING YOUR INSTRUMENT PANEL 209

Recirculation Control
Press this button to choose between
outside air intake or recirculation of
the air inside the vehicle. A LED will
illuminate when you are in Recircula-
tion mode. Only use the Recirculation
mode to temporarily block out any
outside odors, smoke, or dust, and to
cool the interior rapidly upon initial start-up in very hot
or humid weather.
NOTE:
• If the RECIRCULATION button is pressed when the
system is in Mix or Defrost mode the Recirculation
LED indicator will flash three times and then turn off
to indicate Recirculation mode is not allowed.
• Continuous use of the Recirculation mode may make
the inside air stuffy and window fogging may occur.
Extended use of this mode is not recommended. • In cold or damp weather, the use of the Recirculation
mode will cause windows to fog on the inside because
of moisture buildup inside the vehicle. For maximum
defogging, select the outside air position.
• The A/C can be deselected manually without disturb-
ing the mode control selection by pressing the A/C
button.
Air Outlets
The airflow from each of the instrument panel outlets can
be adjusted for direction, and turned on or off to control
airflow.
NOTE: For maximum airflow to the rear, the center
instrument panel outlets can be directed toward the rear
seat passengers.
4 UNDERSTANDING YOUR INSTRUMENT PANEL 259

 Trailer Towing ........................ 344
▫ Common Towing Definitions ............ 344
▫ Trailer Hitch Classification .............. 347
▫ Trailer Towing Weights
(Maximum Trailer Weight Ratings) ........ 348
▫ Trailer And Tongue Weight ............. 349
▫ Towing Requirements ................. 351
▫ Towing Tips ........................ 360
 Snowplow .......................... 361
▫ Before Plowing ...................... 362
▫ Snowplow Prep Package Model
Availability ......................... 362 ▫ Over The Road Operation With Snowplow
Attached .......................... 363
▫ Operating Tips ...................... 363
▫ General Maintenance .................. 364
 Recreational Towing
(Behind Motorhome, Etc.) ................ 365
▫ Towing This Vehicle Behind
Another Vehicle ..................... 365
▫ Recreational Towing – Two-Wheel Drive
Models ........................... 366
▫ Recreational Towing – Four-Wheel Drive
Models ........................... 367272 STARTING AND OPERATING

Tip Start Feature
Do not press the accelerator. Turn the ignition switch
briefly to the START position and release it. The starter
motor will continue to run but will automatically disen-
gage when the engine is running.
Extreme Cold Weather (Below –20°F or  29°C)
To ensure reliable starting at these temperatures, use of
an externally powered electric engine block heater (avail-
able from your authorized dealer) is recommended.
If Engine Fails To Start
If the engine fails to start after you have followed the
“Normal Starting” procedure, it may be flooded. Push
the accelerator pedal all the way to the floor and hold it
there while cranking the engine. This should clear any
excess fuel in case the engine is flooded. CAUTION!To prevent damage to the starter, do not crank the
engine for more than 15 seconds at a time. Wait 10 to
15 seconds before trying again.
WARNING!• Never pour fuel or other flammable liquids into
the throttle body air inlet opening in an attempt to
start the vehicle. This could result in a flash fire
causing serious personal injury.
• Do not attempt to push or tow your vehicle to get
it started. Vehicles equipped with an automatic
transmission cannot be started this way. Unburned
fuel could enter the catalytic converter and once
the engine has started, ignite and damage the
converter and vehicle.
(Continued)274 STARTING AND OPERATING

WARNING! (Continued)• If the vehicle has a discharged battery, booster
cables may be used to obtain a start from a booster
battery or the battery in another vehicle. This type
of start can be dangerous if done improperly. Refer
to “Jump Starting” in “What To Do In Emergen-
cies” for further information.
If the engine has been flooded, it may start to run, but not
have enough power to continue running when the key
fob is released. If this occurs, continue cranking with the
accelerator pedal pushed all the way to the floor. Release
the accelerator pedal and the key fob once the engine is
running smoothly.
If the engine shows no sign of starting after two 15-
second periods of cranking with the accelerator pedal
held to the floor, the “Normal Starting” procedure should
be repeated. After Starting
The idle speed is automatically controlled and will de-
crease as the engine warms up.
ENGINE BLOCK HEATER — IF EQUIPPED
The engine block heater warms the engine, and permits
quicker starts in cold weather. Connect the cord to a
standard 110-115 Volt AC electrical outlet with a
grounded, three-wire extension cord.
3500 Models — 5.7L Engine Only
The engine block heater cord is routed through the grille
by the right front tow hook.
It includes a removable cap that is secured by a tethered
strap. It also has a c-clip that is used for storage when not
in use for the winter months. During winter months,
remove the heater cord wiring assembly from itself on
the c-clip.
5 STARTING AND OPERATING 275

Key Ignition Park Interlock
This vehicle is equipped with a Key Ignition Park Inter-
lock which requires the shift lever to be placed in PARK
before the ignition switch can be turned to the LOCK/
OFF position. The key fob can only be removed from the
ignition when the ignition is in the LOCK/OFF position,
and once removed the shift lever is locked in PARK.
Brake/Transmission Shift Interlock System
This vehicle is equipped with a Brake Transmission Shift
Interlock System (BTSI) that holds the shift lever in the
PARK position unless the brakes are applied. To move
the shift lever out of the PARK position, the ignition
switch must be turned to the ON/RUN position (engine
running or not) and the brake pedal must be pressed.
Six–Speed Automatic Transmission
(5.7L Engine) — If Equipped
The shift lever position display (located in the instrument
panel cluster) indicates the transmission gear range. The shift lever is mounted on the right side of the steering
column. You must press the brake pedal to move the shift
lever out of the PARK position (refer to “Brake/
Transmission Shift Interlock System” in this section). To
drive, move the shift lever from PARK or NEUTRAL to
the DRIVE position. Pull the shift lever toward you when
shifting into REVERSE or PARK, or when shifting out of
PARK.
The electronically-controlled transmission provides a
precise shift schedule. The transmission electronics are
self-calibrating; therefore, the first few shifts on a new
vehicle may be somewhat abrupt. This is a normal
condition, and precision shifts will develop within a few
hundred miles (kilometers).
Shifting from DRIVE to PARK or REVERSE should be
done only after the accelerator pedal is released and the
vehicle is stopped. Be sure to keep your foot on the brake
pedal when moving the shift lever between these gears.278 STARTING AND OPERATING

The transmission shift lever has only PARK, REVERSE,
NEUTRAL, and DRIVE shift positions. Manual down-
shifts can be made using the Electronic Range Select
(ERS) shift control (refer to “Electronic Range Select
(ERS)” in this section). Pressing the ERS (-/+) switches on
the shift lever while in the DRIVE position will select the
highest available transmission gear, and will display that
gear in the instrument cluster as 6, 5, 4, 3, 2, 1.
Gear Ranges
DO NOT race the engine when shifting from PARK or
NEUTRAL into another gear range.
PARK
This range supplements the parking brake by locking the
transmission. The engine can be started in this range.
Never attempt to use PARK while vehicle is in motion.
Apply the parking brake when leaving vehicle in this
range. When parking on a level surface, you may place the shift
lever in the PARK position first, and then apply the
parking brake.
When parking on a hill, apply the parking brake before
placing the shift lever in PARK, otherwise the load on the
transmission locking mechanism may make it difficult to
move the shift lever out of PARK. As an added precau-
tion, turn the front wheels toward the curb on a downhill
grade and away from the curb on an uphill grade
WARNING!• Never use the PARK position as a substitute for
the parking brake. Always apply the parking
brake fully when parked to guard against vehicle
movement and possible injury or damage.
(Continued)
5 STARTING AND OPERATING 279

WARNING! (Continued)• Your vehicle could move and injure you and others
if it is not completely in PARK. Check by trying to
move the shift lever clockwise without first pull-
ing it toward you after you have placed it in PARK.
Make sure the transmission is in PARK before
leaving the vehicle.
• It is dangerous to move the shift lever out of PARK
or NEUTRAL if the engine speed is higher than
idle speed. If your foot is not firmly pressing the
brake pedal, the vehicle could accelerate quickly
forward or in reverse. You could lose control of the
vehicle and hit someone or something. Only shift
into gear when the engine is idling normally and
when your foot is firmly pressing the brake pedal.
(Continued) WARNING! (Continued)• Unintended movement of a vehicle could injure
those in and near the vehicle. As with all vehicles,
you should never exit a vehicle while the engine is
running. Before exiting a vehicle, always apply the
parking brake, shift the transmission into PARK,
and remove the key fob. Once the key fob is
removed, the shift lever is locked in the PARK
position, securing the vehicle against unwanted
movement. Furthermore, you should never leave
unattended children inside a vehicle.
• Never leave children alone in a vehicle. Leaving
unattended children in a vehicle is dangerous for a
number of reasons. A child or others could be
seriously or fatally injured. Do not leave the key
fob in the vehicle. A child could operate power
windows, other controls, or move the vehicle.280 STARTING AND OPERATING