2012 Ram 5500 Chassis Cab ignition

the SELECT button to turn off the message. If the
problem continues, the message will appear the next time
the vehicle is started.
A loose, improperly installed, or damaged fuel filler cap
may also turn on the Malfunction Indicator Light (MIL).
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 that require an Inspection and Mainte-
nance (I/M), this check verifies the “Malfunction
Indicator Light (MIL)” is functioning and is not
on when the engine is running, and that the OBD II
system is ready for testing.Normally, the OBD II system will be ready. The OBD II
system maynotbe ready if your vehicle was recently
serviced, recently had a dead battery or a battery replace-
ment. If the OBD II 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 II system is ready, you must
do the following:
1. Turn the ignition switch to the ON position, but do not
crank or start the engine.
2. If you crank or start the engine, you will have to start
this test over.
3. As soon as you turn the ignition switch to the ON
position, you will see the MIL symbol come on as part of
a normal bulb check.
7
MAINTAINING YOUR VEHICLE 407

4. Approximately 15 seconds later, one of two things will
happen:
a. The MIL will flash for about 10 seconds and then
return to being fully illuminated until you turn OFF
the ignition or start the engine. This means that your
vehicle’s OBD II system isnot readyand you should
notproceed to the I/M station.
b. The MIL will not flash at all and will remain fully
illuminated until you turn OFF the ignition or start the
engine. This means that your vehicle’s OBD II system
isreadyand you can proceed to the I/M station.
If your OBD II system isnot ready,you should see your
authorized dealer or repair facility. If your vehicle was
recently serviced or had a battery failure or replacement,
you may need to do nothing more than drive your
vehicle as you normally would in order for your OBD IIsystem to update. A recheck with the above test routine
may then indicate that the system is now ready.
Regardless of whether your vehicle’s OBD II system is
ready or not, if the MIL is illuminated during normal
vehicle operation you should have your vehicle serviced
before going to the I/M station. The I/M station can fail
your vehicle because the MIL is on with the engine
running.
REPLACEMENT PARTS
Use of genuine MOPARparts for normal/scheduled
maintenance and repairs is highly recommended to en-
sure the designed performance. Damage or failures
caused by the use of non-MOPARparts for maintenance
and repairs will not be covered by the manufacturer’s
warranty.
408 MAINTAINING YOUR VEHICLE

To minimize the possibility of catalytic converter dam-
age:
•Do not shut off the engine or interrupt the ignition,
when the transmission is in gear and the vehicle is in
motion.
•Do not try to start the engine by pushing or towing the
vehicle.
•Do not idle the engine with any spark plug wires
disconnected or removed, such as when diagnostic
testing, or for prolonged periods during very rough
idle or malfunctioning operating conditions.
Cooling System
WARNING!
You or others can be badly burned by hot coolant or
steam from your radiator. If you see or hear steam
coming from under the hood, do not open the hood
until the radiator has had time to cool. Never try to
open a cooling system pressure cap when the radiator
is hot.
Engine Coolant Checks
Check the engine coolant (antifreeze) protection every
12 months (before the onset of freezing weather, where
applicable). If the engine coolant (antifreeze) is dirty or
rusty in appearance, the system should be drained,
flushed and refilled with fresh coolant. Check the front of
the A/C condenser for any accumulation of bugs, leaves,
etc. If dirty, clean by gently spraying water from a garden
hose vertically down the face of the condenser.
7
MAINTAINING YOUR VEHICLE 421

Cavity Cartridge
FuseMini
FuseDescription
J03 30 Amp
PinkDiesel Powertrain
Control Module – If
Equipped
J04 25 Amp
NaturalDriver Door Node
J05 25 Amp
NaturalPassenger Door Node
J06 40 Amp
GreenAntilock Brakes
Pump/Stability Con-
trol System
J07 30 Amp
PinkAntilock Brakes
Valve/Stability Con-
trol System
J08 40 Amp
GreenPower Seat
J10 30 Amp
PinkSway Bar Module – If
EquippedCavity Cartridge
FuseMini
FuseDescription
J11 30 Amp
PinkTransfer Case Module
J12 30 Amp
PinkRear Defroster
J13 60 Amp
YellowMain Ignition Off
Draw (IOD) Fuse
J14 20 Amp
BlueTrailer Tow Lamps/
Park Lamps
J15 40 Amp
GreenFront Blower
J17 40 Amp
GreenStarter Motor Sole-
noid
J18 20 Amp
BluePowertrain Control
Module Transmission
Range
J19 60 Amp
YellowRad Fan Motor HI/
Rad Fan Motor Low
7
MAINTAINING YOUR VEHICLE 441

Cavity Cartridge
FuseMini
FuseDescription
M26 10 Amp
RedDriver’s Door Switch
M27 10 Amp
RedIgnition Switch
M28 15 Amp
BluePowertrain Control
Module
M29 10 Amp
RedTire Pressure Monitor
M30 15 Amp
BlueJ1962 Diag Connector
M31 20 Amp
YellowBack-Up Lamps
M32 10 Amp
RedAirbag Module
M33 10 Amp
RedPowertrain Control
ModuleCavity Cartridge
FuseMini
FuseDescription
M34 10 Amp
RedPark Assist Module/
Climate Control Sys-
tem Module/IR
Sensor/Compass
Module
M35 15 Amp
BlueLeft Front & Rear
Parklamps
M36 20 Amp
YellowPower Outlet (Instru-
ment Panel or Center
Console)
M37 10 Amp
RedAntilock Brakes/
Stability Control Sys-
tem Module/
Stoplamp Switch
M38 25 Amp
NaturalAll Door Lock &Un-
lock
444 MAINTAINING YOUR VEHICLE

CAUTION!
•When installing the totally integrated power mod-
ule cover, it is important to ensure the cover is
properly positioned and fully latched. Failure to
do so may allow water to get into the totally
integrated power module and possibly result in a
electrical system failure.
•When replacing a blown fuse, it is important to
use only a fuse having the correct amperage rating.
The use of a fuse with a rating other than indicated
may result in a dangerous electrical system over-
load. If a properly rated fuse continues to blow, it
indicates a problem in the circuit that must be
corrected.
VEHICLE STORAGE
If you are storing your vehicle for more than 21 days, we
recommend that you take the following steps to mini-
mize the drain on your vehicle’s battery:
•Disconnect the Ignition-Off Draw (IOD) fuse located in
the Integrated Power Module, located in the engine
compartment. The IOD cavity includes a snap-in re-
tainer that allows the fuse to be disconnected without
removing it from the fuse block.
•As an alternative to the above steps you may discon-
nect the negative cables from both batteries.
•Any time you store your vehicle or keep it out of
service (i.e., vacation) for two weeks or more, run the
air conditioning system at idle for about five minutes
in the fresh air and high blower setting. This will
ensure adequate system lubrication to minimize the
possibility of compressor damage when the system is
started again.7
MAINTAINING YOUR VEHICLE 445

NOTE:
•When reinstalling the IOD fuse push firmly until fully
seated; the gauges in the instrument cluster will do a
full sweep when the ignition switch is turned to the
RUN position. This is a normal condition.
•When the vehicle is shipped from the factory, the IOD
fuse is in the up or extracted position. If the radio,
interior lamps, keyless entry or other features do not
work with the key OFF, check the position of the fuse
(or check to see if the fuse is blown) to ensure that it is
fully seated. When the IOD fuse is extracted, the
instrument cluster in the odometer window will dis-
playNO FUSE.”
REPLACEMENT BULBS
LIGHT BULBS – Interior Bulb No.
Overhead Console Lamps............... TS212-2
Dome Lamp...........................7679NOTE:For lighted switches, see your authorized dealer
for replacement instructions.
All of the inside bulbs are brass or glass-wedge base.
Aluminum base bulbs are not approved.
LIGHT BULBS – Exterior Bulb No.
Center High Mounted Stop Lamp (CHMSL)..... 921
Fog Lamp.............................9145
Dual Headlamp......................... H13
Quad Headlamp – Low Beam............... H11
Quad Headlamp – High Beam..............9005
Front Turn Signal Lamp (Dual Headlamp).....3157K
Front Turn Signal Lamp (Quad Headlamp). . . 3157NA
Rear Cargo Lamp........................ 921
Cab Roof Marker Lamps.................194NA
446 MAINTAINING YOUR VEHICLE

Grocery Bag Retainer..................... 180
Gross Axle Weight Rating.................. 351
Gross Vehicle Weight Rating................ 350
Guide, Body Builders...................... 6
GVWR ............................... 348
Hands-Free Phone (Uconnect™).............. 93
Hazard
Driving Through Flowing, Rising, or Shallow
Standing Water...................... 306
Hazard Warning Flasher................... 380
Head Restraints......................... 139
Headlights............................ 447
Automatic......................... 148
Cleaning........................... 439
High Beam......................... 154
High Beam/Low Beam Select Switch...... 154
Lights On Reminder.................. 152
Passing............................ 154Switch ............................ 148
Heated Mirrors....................... 91,180
Heated Seats........................... 133
Heater............................... 263
Heater, Engine Block..................... 281
High Beam/Low Beam Select (Dimmer) Switch . . 154
Hitches
TrailerTowing ....................... 353
Hoisting .............................. 392
Hood Release.......................... 145
Hub Caps............................. 387
Ignition............................... 14
Key ............................. 12,14
Ignition Key Removal..................... 14
Illuminated Entry........................ 20
Immobilizer (Sentry Key)................... 16
Infant Restraint.......................... 65
Inflation Pressure Tires.................... 336
492 INDEX