2007 Ram 2500 (Diesel) wheel

Transmission Shifting....................291
▫Automatic Transmission With Overdrive
(68RFE) — If Equipped.................291
▫Automatic Transmission With Overdrive
(48RE) — If Equipped..................297

Manual Transmission....................303
▫Recommended Vehicle Shift Speeds........304
▫Downshifting........................305

Four-Wheel- Drive Operation — If Equipped . . . 306
▫Manually Shifted Transfer Case Operating
Information/Precautions................306
▫Shifting Procedure - Manually Shifted
Transfer Case........................308
▫Transfer Case Reminder Light............309▫Electronically Shifted Transfer Case Operating
Information/Precautions–If Equipped.......310
▫Shifting Procedure - Electronically Shifted
Transfer Case........................314

Limited-Slip Differential — If Equipped.......317

Driving On Slippery Surfaces..............318

Driving Off-Road.......................319

Parking Brake.........................320

Brake System..........................321
▫Brake Noise.........................322
▫Four-Wheel Anti-Lock Brake System........322

Power Steering........................324

Tire Safety Information...................325
▫Tire Markings........................325
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▫Tire Identification Number (TIN)..........329
▫Tire Loading And Tire Pressure...........330

Tires — General Information...............334
▫Tire Pressure.........................334
▫Tire Inflation Pressures.................335
▫Radial-Ply Tires......................337
▫Compact Spare Tire — If Equipped.........338
▫Limited Use Spare — If Equipped.........338
▫TireSpinning ........................339
▫Tread Wear Indicators..................340
▫LifeOfTire .........................340
▫Replacement Tires.....................341
▫Alignment And Balance.................342
Supplemental Tire Pressure Information — If
Equipped............................343

Tire Chains...........................343

Snow Tires...........................345

Tire Rotation Recommendations............345
▫Dual Rear Wheels.....................347

Engine Runaway.......................348

Fuel Requirements......................348
▫Fuel Requirements (5.9L Diesel Engine)......348
▫Fuel Requirements (6.7L Diesel Engines).....350

Adding Fuel (Diesel Engines)..............352
▫Fuel Filler Cap (Gas Cap)...............352
▫Bulk Fuel Storage.....................353
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Vehicle Loading........................355
▫Certification Label.....................355

TrailerTowing .........................358
▫Common Towing Definitions.............358
▫Trailer Hitch Classification...............362
▫Trailer Towing Weights (Maximum
Trailer Weight Ratings).................363
▫Trailer And Tongue Weight..............363
▫Towing Requirements..................364
▫TowingTips .........................370
▫Trailer Towing Mirrors — If Equipped......371

Snowplow............................373▫Before Plowing.......................374
▫Snowplow Prep Package Model Availability . . 374
▫Over The Road Operation With Snowplow
Attached...........................375
▫Methods For Removing Snow............375
▫Operating Tips.......................375
▫General Maintenance...................376

Recreational Towing
(Behind Motorhome, Etc.).................377
▫Recreational Towing –
2 Wheel Drive Models..................377
▫Recreational Towing –
4 Wheel Drive Models..................377
274 STARTING AND OPERATING

TRANSMISSION SHIFTING
Automatic Transmission with Overdrive (68RFE)
— If Equipped
The gear shift selector display, located in the instrument
panel cluster, indicates the transmission gear range (the
selector is illuminated for night driving). The selector
lever is mounted on the right side of the steering column.
You must depress the brake pedal, to pull the selector
lever out of park (P) position (Brake Interlock System). To
drive, move the selector lever from Park or Neutral to the
desired drive position. Pull the selector lever toward you
when shifting into Reverse, or Park, or when shifting out
of Park.
Gear Ranges
DO NOT race the engine when shifting from Park or
Neutral position into another gear range.“P” Park
This gear position supplements the parking brake by
locking the transmission. The engine can be started in
this range. Never use Park while the vehicle is in motion.
Apply the parking brake when leaving the vehicle in this
range. Always apply parking brake first, then place the
selector in Park position. On 4-wheel drive vehicles be
sure that the transfer case is in a drive position!
WARNING!
Your vehicle could move and injure you and others if
it is not completely in P (Park). Check by trying to
move the gearshift lever back and forth without first
pulling it toward you after you have set it in P. Make
sure it is in Park before leaving the vehicle.
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delayed. Shifts into 5th and 6th gear are still allowed
under steady cruise conditions. Closed throttle down-
shifts (for improved engine braking) may occur during
steady braking maneuvers. Pressing the switch a second
time restores normal operation. Normal operation is
always the default at engine start-up.
The “TOW HAUL” light will illuminate in the instrument
cluster to indicate when the switch has been activated. If
the “TOW HAUL” modes are desired, the button must be
pressed each time the engine is started.
Electronic Range Select (ERS) Operation
The Auto–6 Electronic Range Select (ERS) shift control
allows you to move the switch down (-) or up (+) when
the shifter is in the D (Drive) position, allowing the
selection of the desired top gear. For example, if the
driver shifts the transmission into 3rd gear, the transmis-
sion will never shift above 3rd gear, but can shift down to
2nd or 1st gear, when needed.Switching from ERS to D-Mode can be done at any
vehicle speed. To switch from “Drive” mode to “ERS”
mode, press the switch down (-) once. The selected gear
will be maintained as the top gear. To disable ERS, simply
press and hold the switch up (+) until “D” is displayed in
the instrument cluster odometer.
WARNING!
Do not downshift for additional engine braking on a
slippery surface. The drive wheels could lose their
grip and the vehicle could skid.
Screen Display12 3456D
Actual Gear(s)
Allowed1 1-2 1-3 1-4 1-5 1-6 1-6
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“P” Park
This gear position supplements the parking brake by
locking the transmission. The engine can be started in
this range. Never use Park while the vehicle is in motion.
Apply the parking brake when leaving the vehicle in this
range. Always apply parking brake first, then place the
selector in Park position. On 4-wheel drive vehicles be
sure that the transfer case is in a drive position!
WARNING!
Your vehicle could move and injure you and others if
it is not completely in P (Park). Check by trying to
move the gearshift lever back and forth without first
pulling it toward you after you have set it in P. Make
sure it is in Park before leaving the vehicle.
WARNING!
It is dangerous to shift the selector lever out of “P” or
“N” if the engine speed is higher than idle speed. If
your foot is not firmly on 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 right foot is firmly on
the brake pedal.
“R” Reverse
Use this range only after the vehicle has come to a
complete stop.
298 STARTING AND OPERATING

FOUR-WHEEL- DRIVE OPERATION — IF
EQUIPPED
Four-Wheel-Drive Dodge Ram Trucks are equipped with
either a Manually Shifted transfer case or an Electroni-
cally Shifted transfer case. See the operating instructions
for your transfer case, located within this section.
Manually Shifted Transfer Case Operating
Information/Precautions
The transfer case provides 4 mode positions-2(rear)-
wheel-drive high range, 4-wheel-drive high range, neu-
tral, and 4-wheel-drive low range.
This transfer case is intended to be driven in the 2-wheel-
drive position (2H) for normal street and highway con-
ditions such as dry hard surfaced roads.
When additional traction is required the transfer case 4H
and 4L positions can be used to lock the front and rear
driveshafts together and force the front and rear wheelsto rotate at the same speed. This is accomplished by
simply moving the shift lever to the desired positions.
The 4H and 4L positions are intended for loose, slippery
road surfaces only. Driving in the 4H and 4L positions on
dry hard surfaced roads may cause increased tire wear
and damage to the driveline components.
The 4-wheel-drive light (4WD), located in the instrument
cluster, alerts the driver that the vehicle is in 4-wheel
drive and that the front and rear driveshafts are locked
together. This light illuminates when the transfer case is
shifted to either the 4H or 4L positions. There is no light
for the 2H or N (Neutral) positions.
When operating your vehicle in 4L, the engine speed is
approximately three times that of the 2H or 4H positions
at a given road speed. Take care not to overspeed the
engine and do not exceed 25 mph (40 km/h).
306 STARTING AND OPERATING

Proper operation of 4-wheel-drive vehicles depends on
tires of equal size, type and circumference on each wheel.
Any difference will adversely affect shifting and can
cause damage to the transfer case.
NOTE:Do not attempt to make a shift while only the
front or rear wheels are spinning. The transfer case is not
equipped with a synchronizer and therefore the front and
rear driveshaft speeds must be equal for the shift to take
place. Shifting while only the front or rear wheels are
spinning can cause damage to the transfer case.
Because 4-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 (N) position without first fully engaging the
parking brake. The transfer case Neutral (N) 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 - Normal street and
highway driving. Dry hard surfaced roads.
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