reset DODGE RAM 2500 POWER WAGON 2008 3.G Owner's Manual

ªLight Loadº Reset Switch Operation ± If
Equipped
²
This vehicle may have different recommended tire
pressure values between the front and rear tires as
shown in both the Tire Loading Information Label and
the Supplemental Tire Pressure Information Label
(located on the rear face of the driver door). It is also
equipped to be driven with tire pressures appropriate
to either a Light Load condition or the vehicle Max
Load condition.
²The ªLight Loadº reset switch will allow the driver to
change between the max load inflation pressure (cold)
low pressure warning threshold and the light load
inflation pressure (cold) low pressure warning thresh-
old depending on the vehicle's load condition. Refer to
the ªSupplemental Tire Pressure Informationº label for
the vehicle's Light Load inflation pressures and ªTire
and Loading Information º label for the vehicle's Max
Load inflation pressures.
Light Load Reset Switch
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²The TPMS system will always reset to the max load
inflation pressure (cold) low pressure warning thresh-
old condition when the system experiences a loss of
electrical power. For example, by momentarily discon-
necting the battery or IOD fuse.To switch from the max load inflation pressure (cold) low
pressure warning threshold to the light load inflation
pressure (cold) low pressure warning threshold, the
driver must first lower all four road tire pressures to the
Light Load Inflation Pressure values as listed on the
Supplemental Tire Pressure Information label. The
Supplemental Tire Pressure Information label is located
on the rear face of the driver door. Use an accurate tire
gauge to check the tire pressures when lowering all four
tire pressures. Next proceed to turning the ignition on to
the Run position. This may cause the TPMS low pressure
warning telltale lamp located in the Instrument Cluster to
turn ON and a chime to sound since the tire pressures
have been lowered below the max load inflation pressure
(cold) pressures. After all four tire pressures have been
lowered to the Light Load inflation pressures, press the
ªLight Loadº reset switch. If the ªLight Loadº switch
amber colored LED turns ON, the TPM system low
pressure telltale lamp will illuminate at a tire pressure
Example Supplemental Tire Pressure Label
352 STARTING AND OPERATING

25% or more below the light load inflation pressure (cold)
tire pressure values. The light load inflation pressure
(cold) tire pressure values are defined in the Supplemen-
tal Tire Pressure Information label located on the rear face
of the driver door. If the switch LED did not turn ON,
you may need to drive the vehicle for one minute above
15 mph (25 km/h) and then press the ªLight Loadº reset
switch again. Also, the TPM system low pressure telltale
lamp will turn off once the vehicle has been driven for up
to one minute above 15 mph (25 km/h). The TPM system
will now remain in the Light Load vehicle pressure
monitoring condition and the ªLight Loadº reset switch
LED will remain ON for each subsequent key cycle,
unless the system experiences a loss of electrical power as
previously described.If the ªLight Loadº reset switch amber colored LED
flashes on and off for 10 seconds, after all four tire
pressures have been lowered to the Light Load inflation
pressures, the pressure in any one of the four tires may
not be at the light load inflation pressure (cold) values as
indicated for the Light Load condition as defined in the
Supplemental Tire Pressure Information label located on
the rear face of the driver door. Using an accurate tire
pressure gauge, re-check the tire pressures for the light
load inflation pressure (cold) value and drive the vehicle
for up to one minute above 15 mph (25 km/h) and press
the ªLight Loadº reset switch again.
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WARNING!
It is the driver 's responsibility to change to the max
load inflation pressure (cold) low pressure warning
threshold condition when not driving in the light
load condition as defined as two occupants ( 150 lbs
each) plus 200 pounds of cargo. The vehicle ªLight
Load Definitionº is found in the Supplemental Tire
Pressure Information Label located on the rear face of
the driver door. Failure to do so may cause you to lose
control resulting in an accident, causing serious or
fatal injury.To switch back to the max load inflation pressure (cold)
low pressure warning threshold, press the ªLight Loadº
reset switch. It is not necessary to first fill the tires to the
max load inflation pressure (cold) values to switch the
TPMS system to the max load inflation pressure (cold)
low pressure warning threshold. If after pressing the
ªLight Loadº reset switch and tire pressures are below
the max load inflation pressure (cold) low pressure
warning thresholds, the TPMS low pressure warning
telltale lamp located in the Instrument Cluster will turn
ON and a chime will sound. The tire pressures are now
required to be inflated to the max load inflation pressure
(cold) values described on the Tire and Loading Informa-
tion label. The Tire and Loading Information label is
located on the drivers side B-pillar. If the ªLight Loadº
reset switch LED turns OFF the TPMS has been reset and
the low pressure telltale lamp will illuminate at tire
pressures 25% or more below the max load inflation
pressure (cold) values.
354 STARTING AND OPERATING

Tire Pressure Monitor System Components
The Tire Pressure Monitor System (TPMS) uses wireless
technology with wheel rim mounted electronic sensors to
monitor tire pressure levels. Sensors, mounted to each
wheel as part of the valve stem, transmit tire pressure
readings to the Receiver Module.
NOTE:It is particularly important, for you to check the
tire pressure in all of your tires regularly and to maintain
the proper pressure.
The Tire Pressure Monitoring System (TPMS) consists of
the following components:
²Receiver Module
²4 Wheel Sensors
²2 Trigger Modules (mounted in the front wheel-wells)
²ªLight Loadº Reset Switch (located in the instrument
panel)
²Tire Pressure Monitoring Telltale Lamp
Tire Pressure Monitoring Low Pressure Warnings
The Tire Pressure Monitoring Telltale Lamp will
illuminate in the instrument cluster, and an au-
dible chime will be activated when one or more of
the four active road tire pressures are low. Should this
occur, you should stop as soon as possible, check the
inflation pressure of each tire on your vehicle and inflate
each tire to the vehicle's recommended cold placard
pressure value. The system will automatically update
and the Tire Pressure Monitoring Lamp will extinguish
once the updated tire pressures have been received. The
vehicle may need to be driven for up to 10 minutes above
15 mph (25 km/h) to receive this information.
Check TPMS Warnings
The Tire Pressure Monitoring Telltale Warning Light
located in the Instrument Cluster will flash on and off for
75 seconds and will remain on solid when a system fault
is detected. The system fault will also sound a chime. If
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WARNING!
²Never have any smoking materials lit in or near
the vehicle when the gas cap is removed or the
tank filled.
²Never add fuel to the vehicle when the engine is
running. This is in violation of most state and
federal fire regulations and will cause the Mal-
function Indicator Light to turn on.
NOTE:Tighten the gas cap 1/4 turn until you hear one
click. This is an indication that the cap is properly
tightened.
If the gas cap is not tightened properly, the Malfunction
Indicator Light will come on, Be sure the gas cap is
tightened every time the vehicle is refueled.
WARNING!
A fire may result if gasoline is pumped into a
portable container that is inside of a vehicle. You
could be burned. Always place gas containers on the
ground while filling.
Loose Fuel Filler Cap (Gas Cap) Message
If the vehicles diagnostic system determines that the fuel
filler cap in loose, improperly installed, or damaged, a
GASCAP message will be displayed in the instrument
cluster. Tighten the gas cap until a ªclickingº sound is
heard. This is an indication that the gas cap is properly
tightened. Press the odometer reset button to turn the
message off. If the problem persists, the message will
appear the next time the vehicle is started. This might
indicate a damaged cap. If the problem is detected twice
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5

tightened. Press the odometer reset button to turn the
message off. If the problem persists, the message will
appear the next time the vehicle is started. This might
indicate a damaged cap. If the problem is detected twice
in a row, the system will turn on the Malfunction
Indicator Light (MIL). Resolving the problem will turn
the MIL light off.
EMISSIONS INSPECTION AND MAINTENANCE
PROGRAMS
In some localities, it may be a legal requirement to pass
an inspection of your vehicle's emissions control system.
Failure to pass could prevent vehicle registration.
For states which have an I/M (Inspection and
Maintenance) requirement, this check verifies the
following: the MIL (Malfunction Indicator Lamp)
is functioning and is not on when the engine is running,
and that the OBD (On Board Diagnostic) system is ready
for testing.Normally, the OBD system will be ready. The OBD
system maynotbe ready if your vehicle was recently
serviced, if you recently had a dead battery, or a battery
replacement. If the OBD system should be determined
not ready for the I/M test, your vehicle may fail the test.
Your vehicle has a simple ignition key actuated test
which you can use prior to going to the test station. To
check if your vehicle's OBD system is ready, you must do
the following:
1. Insert your ignition key into the ignition switch.
2. Turn the ignition to the ON position, but do not crank
or start the engine.
3. If you crank or start the engine, you will have to start
this test over.
4. As soon as you turn your key to the ON position, you
will see your MIL symbol come on as part of a normal
bulb check.
410 MAINTAINING YOUR VEHICLE

²Change your engine oil more often if you drive your
vehicle off-road for an extended period of time.
²Under no circumstances should oil change intervals
exceed 6,000 miles (10,000 km) or 6 months, whichever
comes first.
Your dealer will reset the oil change indicator message
after completing the scheduled oil change. If this sched-
uled oil change is performed by someone other than your
dealer the message can be reset by referring to the steps
described under ªOdometer/Trip Odometerº under ªIn-
strument Cluster Descriptionº in Section 4 of this
manual.
At Each Stop for Fuel
²Check the engine oil level about 5 minutes after a fully
warmed engine is shut off. Checking the oil level whilethe vehicle is on level ground will improve the accu-
racy of the oil level reading. Add oil only when the
level is at or below the ADD or MIN mark.
²Check the windshield washer solvent and add if
required.
Once a Month
²Check tire pressure and look for unusual wear or
damage.
²Inspect the battery and clean and tighten the terminals
as required.
²Check the fluid levels of coolant reservoir, brake
master cylinder, power steering and transmission and
add as needed.
²Check all lights and other electrical items for correct
operation.
MAINTENANCE SCHEDULES 469
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Electric Powered....................... 91
Outside.............................. 90
Rearview............................. 88
Trailer Towing......................92,381
Modifications/Alterations, Vehicle............. 7
Monitor, Tire Pressure System............... 347
Mopar Parts......................... 411,479
Multi-Displacement Engine System........... 326
Multi-Function Control Lever............... 133
Navigation Radio........................ 227
Navigation System....................... 227
Noise Control
Maintenance.......................... 439
Tampering Prohibited................439,440
Noise Emission Warranty.................. 441
Occupant Restraints....................... 34
Octane Rating, Gasoline (Fuel).............. 357Odometer..........................182,189
Trip .............................182,189
Off-Pavement Driving (Off-Road)............ 281
Off-Road Driving (Off-Pavement)............ 281
Oil Change Indicator..................... 183
Oil Change Indicator, Reset................. 183
Oil, Engine.........................413,465
Capacity............................ 464
Change Interval....................... 414
Dipstick............................. 413
Disposal............................ 415
Filter............................415,465
Filter Disposal........................ 415
Identification Logo..................... 414
Materials Added to..................... 415
Pressure Gauge....................... 180
Recommendation...................414,464
Synthetic............................ 415
Viscosity..........................414,464
INDEX 495
10

Radial Ply Tires......................... 338
Radiator Cap (Coolant Pressure Cap).......427,429
Radio Broadcast Signals................... 191
Radio, Navigation....................... 227
Radio Operation...................192,200,213
Radio Remote Controls.................... 235
Radio, Satellite.......................228,231
Radio (Sound Systems)..............192,200,213
Ramp Travel Index....................... 282
Rear Axle (Differential).................... 434
Rear Wheel Bearings..................... 439
Rear Window Features.................... 165
Rear Window, Sliding..................... 166
Reclining Front Seats..................... 122
Recorder, Event Data...................... 59
Recreational Towing...................... 384
Shifting into Transfer Case Neutral (N)....... 384
Shifting out of Transfer Case Neutral (N)..... 386Reformulated Gasoline.................... 358
Refrigerant............................ 421
Reminder, Seat Belt....................... 45
Remote Keyless Entry (RKE)................. 21
Remote Sound System (Radio) Controls........ 235
Remote Starting System.................... 25
Replacement Keys........................ 16
Replacement Tires....................... 342
Reporting Safety Defects................... 479
Resetting Oil Change Indicator.............. 183
Restraint, Head......................... 122
Restraints, Child.......................61,68
Restraints, Occupant...................... 34
Ride Height............................ 85
Rotation, Tires.......................... 346
Safety Checks Inside Vehicle................. 77
Safety Checks Outside Vehicle............... 78
INDEX 497
10