ignition RAM CHASSIS CAB 2023 Owners Manual

382SERVICING AND MAINTENANCE
F61 –10 Amp RedNH3 Sensor / PM Sensor *
F62 –10 Amp RedA/C Clutch
F63 –20 Amp YellowIgnition Coils / CAPS
F64 –25 Amp ClearFuel Injectors / PCM *
F65 –10 Amp RedRVDMP / MOD BLE *
F66 –10 Amp RedSunroof / USB RR * / RR Mirror/
Passenger Wind SW
F67 –10 Amp RedUCI / TRLR 360 Cam/ Tach *
F68 –10 Amp RedAEB RACAM HTR *
F69 –15 Amp BlueSCR Mod 12 Volt *
F70 –30 Amp GreenFuel Pump Mtr / Fuel Htr RLY
F71 –25 Amp ClearAmp / Act Noise Cnsl
F72 ––Spare
F73 –20 Amp YellowFuel Transfer Pump *
F74 –10 Amp RedBackup Alarm
F75 –10 Amp RedSCR RLY / ATMM *
F76 –10 Amp RedElectronic Stability Control (ESC) *
F77 –10 Amp RedDTCM / TCM / FAD MOD / STOM
F78 –15 Amp BlueECM / PCM / IRCM / AUX Relay
Feed / HRLS
F79 –15 Amp BlueID / Clearance Lt
Cavity Cartridge Fuse Micro FuseDescription
* If Equipped

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406SERVICING AND MAINTENANCE
Dual Rear Wheels

Tire Rotation

The tires used on dual wheel assemblies should be
matched for wear to prevent overloading one tire in
a set. To check if tires are even, lay a straight edge
across all four tires. The straight edge should touch
all the tires.
NOTE:If your vehicle is equipped with a Tire Pressure
Information System (TPIS):
The Tire Pressure Information System (TPIS)
uses unique sensors in the inner rear wheels to
help identify them from the outer rear wheels,
because of this, the inner and outer wheel loca -
tions can’t be switched.
After a tire rotation is completed, as shown
below, the system can auto learn the locations
of each sensor ID. Auto learning/localization occurs when the vehicle ignition status is
changed from Off to On and speeds of greater
than 5 mph (8 km/h) are obtained and remain
over 5 mph (8 km/h) for at about a 15 minute
period. You may need to drive for 20 minutes to
account slower speeds and stops.
If the tires are rotated incorrectly, the Auto local
-
ization of the TPIS sensors will fail to locate
correctly resulting in incorrect locations for the
pressure values displayed in the Instrument
Cluster.
DEPARTMENT OF TRANSPORTATION
UNIFORM TIRE QUALITY GRADES
The following tire grading categories
were established by the National
Highway Traffic Safety Administration.
The specific grade rating assigned by the
tire's manufacturer in each category is
shown on the sidewall of the tires on
your vehicle.
All passenger vehicle tires must conform
to Federal safety requirements in
addition to these grades.
TREADWEAR
The Treadwear grade is a comparative
rating, based on the wear rate of the tire
when tested under controlled conditions
on a specified government test course.
For example, a tire graded 150 would
wear one and one-half times as well on
the government course as a tire graded
100. The relative performance of tires
depends upon the actual conditions of
their use, however, and may depart
CAUTION!
4500/5500 Dual Rear Tires may only have
one approved direction of rotation. This is to
accommodate the asymmetrical design (tread
pattern) of the On/Off road tire.
When replacing a flat, the spare tire may have
to be remounted on the rim or installed at a
different location to maintain the correct
placement of the tire on the wheel relative to
the tire/wheel position on the vehicle. For
example, if the spare is used to replace an
outer rear tire it will have to be remounted on
the rim so that the wheel is dished inward.
That way the tread design of asymmetrical
tires will maintain proper position.

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TECHNICAL SPECIFICATIONS415
FUEL SYSTEM CAUTIONSNOTE:Intentional tampering with the emissions control
system can result in civil penalties being assessed
against you.
FUEL REQUIREMENTS – DIESEL ENGINE
Use good quality diesel fuel from a reputable
supplier in your vehicle. Federal law requires that
you must fuel this vehicle with Ultra Low Sulfur
Highway Diesel fuel (15 ppm Sulfur maximum) and
prohibits the use of Low Sulfur Highway Diesel fuel
(500 ppm Sulfur maximum) to avoid damage to the
emissions control system.
For most year-round service, Number 2 diesel fuel
meeting ASTM (formerly known as the American
Society for Testing and Materials) specification
D-975 Grade S15 will provide good performance. If
the vehicle is exposed to extreme cold (below 20°F
or -7°C), or is required to operate at
colder-than-normal conditions for prolonged
periods, use climatized Number 2 diesel fuel or
dilute the Number 2 diesel fuel with 50% Number
1 diesel fuel. This will provide better protection
from fuel gelling or wax-plugging of the fuel filters. Diesel fuel is seldom completely free of water. To
prevent fuel system trouble, drain the
accumulated water from the fuel/water separator
using the fuel/water separator drain provided on
both fuel filters. If you buy good quality fuel and
follow the cold weather advice above, fuel
conditioners should not be required in your vehicle.
If available in your area, a high cetane “premium”
diesel fuel may offer improved cold-starting and
warm-up performance.
CAUTION!
Follow these guidelines to maintain your
vehicle’s performance:
The use of leaded gasoline is prohibited by
Federal law. Using leaded gasoline can impair
engine performance and damage the emis
-
sions control system.
An out-of-tune engine or certain fuel or ignition
malfunctions can cause the catalytic
converter to overheat. If you notice a pungent
burning odor or some light smoke, your engine
may be out of tune or malfunctioning and may
require immediate service. Contact an autho -
rized dealer for service assistance.
The use of fuel additives, which are now being
sold as octane enhancers, is not recom -
mended. Most of these products contain high
concentrations of methanol. Fuel system
damage or vehicle performance problems
resulting from the use of such fuels or addi -
tives is not the responsibility of the manufac-
turer and may void or not be covered under
the New Vehicle Limited Warranty.
WARNING!
Do not use alcohol or gasoline as a fuel blending
agent. They can be unstable under certain
conditions and hazardous or explosive when
mixed with diesel fuel.
CAUTION!
If the Water in Fuel Indicator Light remains on,
DO NOT START engine before you drain the water
from the fuel filter(s) to avoid engine damage
Ú page 360.
9

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432 HomeLink® (Garage Door Opener)
.................. 47Hood Prop........................................................ 77Hood Release.................................................. 77Hub Caps....................................................... 332
I
Idle-Up Feature.............................................. 124Ignition............................................................ 18Switch......................................................... 18Inside Rearview Mirror............................ 39, 326Instrument Cluster........ 83, 84, 85, 86, 87, 89Descriptions.............................................. 110Display........................................................ 89Engine Oil Reset.......................................... 92Instrument Panel Lens Cleaning.................... 410Integrated Trailer Brake Control.................... 188Interior Appearance Care............................... 409Interior Lights.................................................. 55Intermittent Wipers (Delay Wipers).................. 57Intervention Regeneration Strategy........ 98, 364Inverter Outlet (115V)...................................... 72
J
Jack Location................................................ 329Jack Operation.............................................. 329Jacking And Tire Changing............................ 329Jacking And Tire Changing
b
...................... 329Jump Starting............................................... 333
K
Key Fob Panic Alarm
................................................. 16Programming Additional Key Fobs............... 17Key Fob Battery Service
(Remote Keyless Entry).................................... 16
Key Fob Programming (Remote Keyless Entry).. 17
Keyless Enter 'n Go™.................... 25, 115, 117Passive Entry............................................... 25Keys................................................................. 15
L
Lane Change And Turn Signals........................ 54Lane Change Assist......................................... 54LaneSense.................................................... 163Latches......................................................... 324Hood............................................................ 77
Lead Free Gasoline....................................... 413Leaks, Fluid................................................... 324Life Of Tires................................................... 399Light Bulbs........................................... 324, 384LIghtsElectrinic Power Steering Pump................ 105Oil Temperature........................................ 104Lights............................................................ 324Air Bag.................................... 103, 297, 322Automatic High Beam..................................52Brake Assist Warning................................ 274Brake Warning.......................................... 103Bulb Replacement.................................... 384Cab Top Clearance................................... 388Cargo...........................................................54Center Mounted Stop............................... 388Courtesy/Reading........................................55Cruise....................................................... 110Daytime Running.........................................52
Electronic Stability Program (ESP) Indicator.... 104
Exterior.............................................. 51, 324Fog............................................................ 387Four Wheel Drive Indicator....................... 147

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