bulb Ram 5500 Chassis Cab 2012 User Guide

•Electronic Throttle Control (ETC) Light
This light informs you of a problem with the
Electronic Throttle Control (ETC) system. The
light will come on when the ignition is first
turned ON and remain on briefly as a bulb
check. If the light does not come on during starting, have
the system checked by an authorized dealer.
If a problem is detected, the light will come on while the
engine is running. Cycle the ignition key when the
vehicle has completely stopped and the shift lever is
placed in the PARK position. The light should turn off.
If the light remains lit with the engine running, your
vehicle will usually be drivable. However, see an autho-
rized dealer for service as soon as possible. If the light is
flashing when the engine is running, immediate service is
required. You may experience reduced performance, an
elevated/rough idle or engine stall and your vehicle may
require towing.•Engine Temperature Warning Light
This light warns of an overheated engine condi-
tion. As temperatures rise and the gauge ap-
proachesH,this indicator will illuminate and a
single chime will sound after reaching a set threshold.
Further overheating will cause the temperature gauge to
passH,the indicator will continuously flash and a
continuous chime will occur until the engine is allowed
to cool.
If the light turns on while driving, safely pull over and
stop the vehicle. If the A/C system is on, turn it off. Also,
shift the transmission into NEUTRAL and idle the ve-
hicle. If the temperature reading does not return to
normal, turn the engine off immediately and call for
service. Refer to “If Your Engine Overheats” in “What To
Do In Emergencies” for more information.
210 UNDERSTANDING YOUR INSTRUMENT PANEL

▫Exhaust System..................... 419
▫Cooling System..................... 421
▫Brake System....................... 427
▫Rear Axle And 4X4 Front Driving Axle Fluid
Level............................. 430
▫Transfer Case....................... 431
▫Automatic Transmission............... 432
▫Appearance Care And Protection From
Corrosion.......................... 435
Fuses.............................. 440
▫Totally Integrated Power Module......... 440
Vehicle Storage....................... 445Replacement Bulbs.................... 446
Bulb Replacement..................... 447
▫Dual Or Quad Headlamp/Front Park And
Turn Signal – If Equipped.............. 447
▫Fog Lamps – If Equipped.............. 449
▫Center High-Mounted Stoplamp (CHMSL)
With Cargo Lamp.................... 449
▫Cab Top Clearance Lamps – If Equipped.... 451
Fluid Capacities...................... 453
Fluids, Lubricants And Genuine Parts....... 454
▫Engine............................ 454
▫Chassis........................... 455
404 MAINTAINING YOUR VEHICLE

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.
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MAINTAINING YOUR VEHICLE 407

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

BULB REPLACEMENT
Dual Or Quad Headlamp/Front Park And Turn
Signal – If Equipped
1. Open the hood.
2. Disconnect and isolate the negative battery cable.
3. Remove the four plastic push-in fasteners that secure
the upper radiator seal to the grille support and both
fender ledges.
4. Remove the two plastic push-in rivets that secure the
upper radiator seal to the radiator.
5. Remove the upper radiator seal from the vehicle.
6. Remove the two headlamp assembly attachment
screws.7. Reach into the front wheel house ahead of the front
wheel, remove the fastener, and lift the cover over the
access hole in the front of the wheel house splash shield.
Access to the rear of the lamp can be gained through this
access hole.
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MAINTAINING YOUR VEHICLE 447

8. Reach through the access hole of the wheel house
splash shield and lift the slide lock upward far enough to
disengage it from the lock post on the back of the front
lamp unit housing.
9. Remove the headlamp assembly. Grasp the outboard
edge of the lamp and pull it straight forward to disen-
gage the ball stud from the plastic grommet.10. Disconnect electrical connectors.
11. Replace bulb(s) as necessary.
CAUTION!
•Do not contaminate the bulb glass by touching it
with your fingers or by allowing it to contact other
oily surfaces. Shortened bulb life will result.
•Always use the correct bulb size and type for
replacement. An incorrect bulb size or type may
overheat and cause damage to the lamp, the bulb
socket, or the lamp wiring.
NOTE:There are access covers over both headlamp
bulb access holes in the quad front lamp unit housing (if
equipped). These covers MUST be reinstalled after the
bulb has been replaced.
448 MAINTAINING YOUR VEHICLE

Fog Lamps – If Equipped
1. Reach under and behind the front bumper to access
the back of the front fog lamp housing.
2. Disconnect the fog lamp wiring harness connector
from the fog lamp bulb.
3. Rotate the bulb counterclockwise
14turn to unlock the
bulb from the housing.
4. Pull the bulb straight out from the housing.
CAUTION!
Do not contaminate the bulb glass by touching it
with your fingers or by allowing it to contact other
oily surfaces. Shortened bulb life will result.
Center High-Mounted Stoplamp (CHMSL) With
Cargo Lamp
1. Remove the two screws holding the housing/lens to
the body as shown.
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MAINTAINING YOUR VEHICLE 449

2. Separate the connector holding the housing and wir-
ing harness to the body.3. Turn the desired bulb socket14turn and remove the
socket and bulb from housing.
4. Pull the desired bulb straight from the socket.
450 MAINTAINING YOUR VEHICLE

CAUTION!
Do not contaminate the bulb glass by touching it
with your fingers or by allowing it to contact other
oily surfaces. Shortened bulb life will result.
•Outside Bulbs: Cargo Lamps
•Inside Bulb: Center High-Mounted Stop Lamp
5. Reverse the procedure for installation of bulbs and
housing.
Cab Top Clearance Lamps – If Equipped
1. Remove the two screws from the top of the lamp.
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MAINTAINING YOUR VEHICLE 451

2. Rotate the socket14turn and pull it from the lamp
assembly.3. Pull the bulb straight from it’s socket and replace.
452 MAINTAINING YOUR VEHICLE