towing RAM CHASSIS CAB 2011 User Guide

▫ Replacement Tires .................... 311
 Supplemental Tire Pressure Information —
If Equipped .......................... 313
 Tire Chains .......................... 313
 Snow Tires .......................... 315
 Tire Rotation Recommendations ........... 315
▫ Dual Rear Wheels .................... 316
 Fuel Requirements ..................... 317
▫ Reformulated Gasoline ................ 318
▫ Gasoline/Oxygenate Blends ............. 318
▫ E-85 Usage In Non-Flex Fuel Vehicles ...... 319
▫ MMT In Gasoline .................... 319
▫ Materials Added To Fuel ............... 320 ▫ Fuel System Cautions ................. 320
▫ Carbon Monoxide Warnings ............ 321
 Adding Fuel ......................... 322
▫ Loose Fuel Filler Cap Message ........... 323
 Vehicle Loading ...................... 324
▫ Certification Label ................... 324
 Trailer Towing ........................ 326
▫ Common Towing Definitions ............ 326
▫ Trailer Hitch Classification .............. 329
▫ Trailer Towing Weights
(Maximum Trailer Weight Ratings) ........ 330
▫ Trailer And Tongue Weight ............. 330
▫ Towing Requirements ................. 331
5 STARTING AND OPERATING 261

▫ Towing Tips ........................ 339
 Snowplow .......................... 340
▫ Before Plowing ...................... 341
▫ Snowplow Prep Package Model
Availability ......................... 341
▫ Over The Road Operation With Snowplow
Attached .......................... 342
▫ Operating Tips ...................... 342
▫ General Maintenance .................. 343  Recreational Towing
(Behind Motorhome, Etc.) ................ 344
▫ Towing This Vehicle
Behind Another Vehicle ................ 344
▫ Recreational Towing – Two-Wheel Drive
Models ........................... 345
▫ Recreational Towing – Four-Wheel Drive
Models ........................... 345262 STARTING AND OPERATING

column shift lever down (-) or up (+) to select the desired
top gear. For example, if the driver shifts the transmission
into 3 (third gear), the transmission will never shift above
third gear, but can shift down to 2 (second gear) or 1 (first
gear), when needed. On vehicles equipped with 5.7L engines, use of ERS (or
“TOW/HAUL” mode) also enables an additional under-
drive gear which is not normally used during through-
gear accelerations. This additional gear improves vehicle
performance and cooling capability when towing a trailer
on certain grades. In ERS mode, first through third gear
are underdrive gears, and fourth gear is direct drive. ERS
fifth gear (Overdrive) is the same as the normal fourth
gear.
When in the DRIVE position in first through fourth gear,
the first tap down (-), will display the ERS designation for
the current gear (the transmission will not downshift).
For example, if you are in DRIVE and are in third (direct)
gear, when you tap the shift lever/switch one time in the
(-) direction, the display will show 4 (ERS 4 is direct gear).
Another tap down (-) will shift the transmission down to
ERS 3 (the added underdrive gear). When in the DRIVE
position in fifth gear, the first tap down (-) will downshiftColumn Shift Lever
5 STARTING AND OPERATING 269

Overdrive Operation
The Overdrive automatic transmission contains an elec-
tronically controlled fourth and fifth gear (Overdrive).
The transmission will automatically shift from DRIVE to
Overdrive if the following conditions are present:
• the shift lever is in DRIVE;
• the engine coolant (antifreeze) has reached normal
operating temperature;
• vehicle speed is above approximately 30 mph (48 km/h);
• the “TOW/HAUL” switch has not been activated;
• transmission has reached normal operating temperature.
NOTE: If the vehicle is started in extremely cold tem-
peratures, the transmission may not shift into Overdrive
and will automatically select the most desirable gear for operation at this temperature. Normal operation will
resume when the transmission fluid temperature has
risen to a suitable level.
If the transmission temperature gets extremely hot, the
transmission will automatically select the most desirable
gear for operation at this temperature. If the transmission
temperature becomes hot enough, the “Transmission
Temperature Warning Light” may illuminate and the
transmission may downshift out of Overdrive until the
transmission cools down. After cool down, the transmis-
sion will resume normal operation.
The transmission will downshift from Overdrive to
DRIVE if the accelerator pedal is fully pressed at vehicle
speeds above approximately 35 mph (56 km/h).
When To Use “TOW/HAUL” Mode
When driving in hilly areas, towing a trailer, carrying a
heavy load, etc., and frequent transmission shifting oc-
curs, press the “TOW/HAUL” switch. This will improve272 STARTING AND OPERATING

Because four-wheel drive provides improved traction,
there is a tendency to exceed safe turning and stopping
speeds. Do not go faster than road conditions permit.
NOTE: Delayed shifts out of four-wheel drive may be
experienced due to uneven tire wear, low or uneven tire
pressures, excessive vehicle loading, or cold tempera-
tures.
WARNING!You or others could be injured if you leave the
vehicle unattended with the transfer case in the
NEUTRAL position without first fully engaging the
parking brake. The transfer case NEUTRAL position
disengages both the front and rear driveshafts from
the powertrain and will allow the vehicle to move
regardless of the transmission position. The parking
brake should always be applied when the driver is
not in the vehicle. For additional information on the appropriate use of each
transfer case mode position, see the information below:
2H
Rear-Wheel Drive High Range - This range is for normal
street and highway driving on dry hard surfaced roads.
4H
Four-Wheel Drive High Range - This range locks the
front and rear driveshafts together forcing the front and
rear wheels to rotate at the same speed. Additional
traction for loose, slippery road surfaces only.
N
Neutral - This range disengages the front and rear
driveshafts from the powertrain. To be used for flat
towing behind another vehicle. Refer to “Recreational
Towing” in “Starting and Operating” for further
information.276 STARTING AND OPERATING

• 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 lock
the front and rear driveshafts together, 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” for spe-
cific 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 in-
creased tire wear and damage to the driveline compo-
nents. NOTE: The transfer case NEUTRAL position is selected
by pressing the recessed 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.
3. When the shift is complete, the indicator light for the
selected position will stop flashing and remain ON. 5 STARTING AND OPERATING 279

N
Neutral - This range disengages both the front and rear
driveshafts from the powertrain. To be used for flat
towing behind another vehicle. Refer to “Recreational
Towing” in Starting and Operating” for further
information.
Shifting Procedure
NOTE:
• If any of the requirements to select a new transfer case
position have not been met, the transfer case will not
shift. The position indicator light for the previous
position will remain ON and the newly selected posi-
tion indicator light will continue to flash until all the
requirements for the selected position have been met.
To retry a shift: return the control knob back to the
original position, make certain all shift requirements
have been met, wait five seconds and try the shift
again. • If all the requirements to select a new transfer case
position have been met, the current position indicator
light will turn OFF, the selected position indicator light
will flash until the transfer case completes the shift.
When the shift is complete, the position indicator light
for the selected position will stop flashing and remain
ON.
2WD ⇔ 4WD LOCK
Rotate the 4WD control switch to the desired position.
Shifts between 2WD and 4WD LOCK can be done with
the vehicle stopped or in motion. With the vehicle in
motion, the transfer case will engage/disengage faster if
you momentarily release the accelerator pedal after turn-
ing the control switch. If the vehicle is stopped, the
ignition switch must be in the ON position with the
engine either running or off. This shift cannot be com-
pleted if the ignition switch is in the ACC position.282 STARTING AND OPERATING

This placard tells you important information about
the:
1) number of people that can be carried in the vehicle
2) total weight your vehicle can carry
3) tire size designed for your vehicle
4) cold tire inflation pressures for the front, rear, and
spare tires.
Loading
The vehicle maximum load on the tire must not exceed
the load carrying capacity of the tire on your vehicle. You
will not exceed the tire’s load carrying capacity if you
adhere to the loading conditions, tire size, and cold tire
inflation pressures specified on the Tire and Loading
Information placard and in the “Vehicle Loading” section
of this manual. NOTE: Under a maximum loaded vehicle condition,
gross axle weight ratings (GAWRs) for the front and rear
axles must not be exceeded. For further information on
GAWRs, vehicle loading, and trailer towing, refer to
“Vehicle Loading” in this section.
To determine the maximum loading conditions of your
vehicle, locate the statement “The combined weight of
occupants and cargo should never exceed XXX lbs or
XXX kg” on the Tire and Loading Information placard.
The combined weight of occupants, cargo/luggage and
trailer tongue weight (if applicable) should never exceed
the weight referenced here.
Steps for Determining Correct Load Limit
1. Locate the statement “The combined weight of occu-
pants and cargo should never exceed XXX lbs or XXX kg”
on your vehicle’s placard.
5 STARTING AND OPERATING 301

2. Determine the combined weight of the driver and
passengers that will be riding in your vehicle.
3. Subtract the combined weight of the driver and pas-
sengers from XXX lbs or XXX kg.
4. The resulting figure equals the available amount of
cargo and luggage load capacity. For example, if “XXX”
amount equals 1,400 lbs (635 kg) and there will be five
150 lb (68 kg) passengers in your vehicle, the amount of
available cargo and luggage load capacity is 650 lbs
(295 kg) (since 5 x 150 = 750, and 1400 – 750 = 650 lbs
[295 kg]).
5. Determine the combined weight of luggage and cargo
being loaded on the vehicle. That weight may not safely
exceed the available cargo and luggage load capacity
calculated in Step 4. 6. If your vehicle will be towing a trailer, load from your
trailer will be transferred to your vehicle. Consult this
manual to determine how this reduces the available
cargo and luggage load capacity of your vehicle.
NOTE:
• The following table shows examples on how to calcu-
late total load, cargo/luggage, and towing capacities
of your vehicle with varying seating configurations
and number and size of occupants. This table is for
illustration purposes only and may not be accurate for
the seating and load carry capacity of your vehicle.
• For the following example, the combined weight of
occupants and cargo should never exceed 865 lbs
(392 kg).302 STARTING AND OPERATING

Improper weight distributions can have an adverse effect
on the way your vehicle steers and handles and the way
the brakes operate.
CAUTION!Do not load your vehicle any heavier than the GVWR
or the maximum front and rear GAWR. If you do,
parts on your vehicle can break, or it can change the
way your vehicle handles. This could cause you to
lose control. Also overloading can shorten the life of
your vehicle.
TRAILER TOWING
In this section you will find safety tips and information
on limits to the type of towing you can reasonably do
with your vehicle. Before towing a trailer, carefully
review this information to tow your load as efficiently
and safely as possible. To maintain warranty coverage, follow the requirements
and recommendations in this manual concerning ve-
hicles used for trailer towing.
Common Towing Definitions
The following trailer towing related definitions will assist
you in understanding the following information:
Gross Vehicle Weight Rating (GVWR)
The GVWR is the total allowable weight of your vehicle.
This includes driver, passengers, cargo and tongue
weight. The total load must be limited so that you do not
exceed the GVWR. Refer to “Vehicle Loading/Vehicle
Certification Label” in “Starting and Operating” for
further information.
Gross Trailer Weight (GTW)
The GTW is the weight of the trailer plus the weight of all
cargo, consumables and equipment (permanent or tem-
porary) loaded in or on the trailer in its  loaded and
ready for operation  condition.326 STARTING AND OPERATING