2008 DODGE RAM 2500 POWER WAGON TPMS

Tire Pressure Monitor System (TPMS) ªLight
Loadº Reset Switch Description ± If Equipped
WARNING!
Never operate your vehicle with the TPMS and tire
pressures set to the Light Load Inflation Pressure
settings if carrying more than two occupants ( 150 lbs
each) plus 200 pounds of cargo. The vehicle ªLight
Load Definitionº is found in the Supplemental Tire
Pressure Information Label which is 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.The Tire Pressure Monitor (TPM) system ªLight Loadº
reset switch will allow the driver to switch between the
max load inflation pressure (cold) low pressure warning
threshold and the light load inflation pressure (cold) low
pressure warning threshold depending on the vehicle's
load condition. The Tire and Loading Information label
defines the recommended front and rear cold tire infla-
tion pressures for the vehicle when operating in the Max
Load condition. A Supplemental Tire Pressure Informa-
tion label is also available defining Light Load tire
inflation pressures when operating in the Light Load
condition. When the ªLight Loadº reset switch LED is
ON, the Tire Pressure Monitoring (TPM) system is using
the light load inflation pressure (cold) low inflation
warning thresholds and will warn the driver if one or
more of the tire pressures are 25% or more below the
vehicle's defined light load inflation pressures.
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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
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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.
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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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the ignition key is cycled, this sequence will repeat,
providing the system fault still exists. A system fault can
occur by any of the following scenarios:
1. Signal interference due to electronic devices or driving
next to facilities emitting the same Radio Frequencies as
the TPM sensors.
2. Installing aftermarket window tinting that affects ra-
dio wave signals.
3. Accumulation of snow or ice around the wheels or
wheel housings.
4. Using tire chains on the vehicle.
5. Using wheels/tires not equipped with TPM sensors.
6. Loss of communication with the trigger modules or
tire pressure monitoring sensors.
NOTE: Your vehicle is equipped with a non-matching
full size spare wheel and tire assembly.1. This spare tire does not have a tire pressure monitor-
ing sensor. Therefore, the TPMS will not monitor the tire
pressure in the spare tire.
2. If you install the full size spare tire in place of a road
tire that has a pressure below the low-pressure warning
limit, upon the next ignition key cycle, a chime will
sound and the TPM Telltale Light will still turn ON due
to the low tire.
3. However, after driving the vehicle for up to 10 min-
utes above 15 mph (25 km/h), the TPM Telltale Light will
flash on and off for 75 seconds and then remain on solid.
4. For each subsequent ignition key cycle, a chime will
sound and the TPM Telltale Light will flash on and off for
75 seconds and then remain on solid.
5. Once you repair or replace the original road tire, and
reinstall it on the vehicle in place of the full size spare tire,
the TPMS will update automatically and the TPM Telltale
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Light will turn OFF, as long as no tire pressure is below
the low-pressure warning limit in any of the four active
road tires. The vehicle may need to be driven for up to 10
minutes above 15 mph (25 km/h) in order for the TPMS
to receive this information.
General Information
This device complies with part 15 of the FCC rules and
RSS 210 of Industry Canada. Operation is subject to the
following conditions:
²This device may not cause harmful interference.
²This device must accept any interference received, includ-
ing interference that may cause undesired operation.
The tire pressure sensors are covered under one of the
following licenses:
United States.....................KR5S120123
Canada........................2671-S120123
FUEL REQUIREMENTS
The 5.7L engine is designed to meet all
emissions regulations and provide satisfac-
tory fuel economy and performance when
using high quality unleaded gasoline hav-
ing an octane range of 87 to 89. The manu-
facturer recommends the use of 89 octane
for optimum performance.The routine use
of premium gasoline is not recommended. The use of
premium gasoline will provide no benefit over high
quality regular and mid-grade gasolines, and in some
circumstances may result in poorer performance.
Light spark knock at low engine speeds is not harmful to
your engine. However, continued heavy spark knock at
high speeds can cause damage and immediate service is
required.
5.7L Engines
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Intensity Control....................... 129
Interior..........................129,142
Lights On Reminder.................... 132
Passing............................. 134
Seat Belt Reminder..................... 180
Service.............................. 453
Tire Pressure Monitoring (TPMS)........... 187
Transfer Case......................... 274
Transmission Warning................... 189
Turn Signal..................133,179,453,457
Warning (Instrument Cluster Description)..... 179
Limited-Slip Differential................275,434
Loading Vehicle......................... 364
Tires ............................... 331
Locks................................. 27
Child Protection........................ 31
Door................................ 27
Keys................................ 12
Power Door........................... 28Steering Wheel......................... 19
Lower Anchors and Tether for CHildren
(LATCH).............................. 65
Lubrication, Body....................... 424
Lug Nuts............................. 396
Lumbar Support........................ 123
Maintenance........................... 412
Maintenance Free Battery.................. 419
Maintenance Procedures................... 412
Maintenance Schedule.................... 468
Malfunction Indicator Light (Check Engine)..... 410
Manual, Service......................... 480
Manual Transmission..................268,435
Fluid Level Check...................... 435
Lubricant Selection..................435,466
Shift Speeds.......................... 269
Mirrors................................ 88
Automatic Dimming..................... 89
494 INDEX

Supplemental Tire Pressure Information........ 344
Synthetic Engine Oil...................... 415
System, Navigation...................... 227
System, Remote Starting.................... 25
Tachometer............................ 179
Tailgate............................... 171
Tether Anchor, Child Restraint.............65,69
Tilt Steering Column..................... 137
Tip Start.............................. 259
Tire and Loading Information Placard......331,344
Tire Identification Number (TIN)............. 330
Tire Markings.......................... 326
Tire Pressure Monitor System (TPMS) Placard
ªHIº (MAX) Load Switch.................. 177
Tire Safety Information.................... 326
Tires ..........................78,86,335,482
Aging (Life of Tires).................... 341
Air Pressure.......................... 335Alignment........................... 343
Chains.............................. 344
Changing............................ 392
Compact Spare........................ 339
General Information.................... 335
High Speed.......................... 338
Inflation Pressures..................... 336
Jacking............................. 393
Life of Tires.......................... 341
Load Capacity.....................331,332
Off-Road............................. 86
Pressure Monitor System (TPMS)........... 347
Pressure Warning Light.................. 187
Quality Grading....................... 482
Radial.............................. 338
Replacement......................... 342
Rotation............................. 346
Safety...........................326,335
Sizes............................... 328
500 INDEX