hood open RAM CHASSIS CAB 2023 User Guide

SERVICING AND MAINTENANCE371
(Continued)
To guarantee optimum performance of the system,
keep the surfaces of the charge air cooler,
condenser and radiator clean and free of debris.
Periodically check the hoses leading to and from
the charge air cooler for cracks or loose clamps
resulting in loss of pressure and reduced engine
performance.
BRAKE SYSTEM
In order to ensure brake system performance, all
brake system components should be inspected
periodically Ú
page 344.
Fluid Level Check — Brake Master Cylinder
The fluid level of the master cylinder should be
checked when performing under the hood service
or immediately if the Brake System Warning Light
indicates system failure.
If necessary, add fluid to bring level within the
designated marks on the side of the reservoir of
the brake master cylinder. Be sure to clean the top
of the master cylinder area before removing cap.
With disc brakes the fluid level can be expected to
fall as the brake linings wear. However, an
unexpected drop in fluid level may be caused by a
leak and a system check should be conducted.
For further information Ú page 421.
WARNING!
Riding the brakes can lead to brake failure and
possibly a collision. Driving with your foot resting
or riding on the brake pedal can result in
abnormally high brake temperatures, excessive
lining wear, and possible brake damage. You
would not have your full braking capacity in an
emergency.
WARNING!
Use only manufacturer's recommended brake
fluid Úpage 421. Using the wrong type of
brake fluid can severely damage your brake
system and/or impair its performance. The
proper type of brake fluid for your vehicle is
also identified on the original factory installed
hydraulic master cylinder reservoir.
To avoid contamination from foreign matter or
moisture, use only new brake fluid or fluid that
has been in a tightly closed container. Keep
the master cylinder reservoir cap secured at
all times. Brake fluid in an open container
absorbs moisture from the air resulting in a
lower boiling point. This may cause it to boil
unexpectedly during hard or prolonged
braking, resulting in sudden brake failure. This
could result in a collision.
Overfilling the brake fluid reservoir can result
in spilling brake fluid on hot engine parts,
causing the brake fluid to catch fire. Brake
fluid can also damage painted and vinyl
surfaces, care should be taken to avoid its
contact with these surfaces.
Do not allow petroleum based fluid to contam -
inate the brake fluid. Brake seal components
could be damaged, causing partial or
complete brake failure. This could result in a
collision.
WARNING!
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386SERVICING AND MAINTENANCE
Replacing Exterior Bulbs
BASE QUAD: LOW BEAM HEADLAMP, HIGH
BEAM HEADLAMP, FRONT PARK AND TURN —
IF EQUIPPED
Low Beam
See the following steps to replace:

1. Open the hood.

2. Disconnect and isolate the negative battery
cable.
3. 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.

Splash Shield Access Cover
4. Reach through the access hole of the wheel
house splash shield and disengage the bulb
access cover by rotating counterclockwise.

Bulb Access Cover

5. Disconnect the internal lamp wiring harness connector from the low beam bulb. 6. Rotate the bulb counterclockwise a quarter
turn to unlock the bulb from the lamp.
7. Pull the bulb straight out from the housing.
8. Reverse the procedure for installation of new bulb and covers.
High Beam
See the following steps to replace:

1. Open the hood.

2. Disconnect and isolate the negative battery cable.

Bulb Access Cover

3. Look under the hood and behind the headlamp to find the high beam bulb access
cover.
4. Reach behind the headlamp and disengage the access cover by rotating counterclockwise.
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.

23_DPF_OM_EN_USC_t.book Page 386

SERVICING AND MAINTENANCE387
5. Disconnect the internal lamp wiring harness connector from the high beam bulb.
6. Rotate the bulb counterclockwise a quarter turn to unlock the bulb from the lamp.
7. Pull the bulb straight out from the housing.
8. Reverse the procedure for installation of new bulb and covers.
Outer Park And Turn
See the following steps to replace:

1. Open the hood.

2. Disconnect and isolate the negative battery cable.
3. 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.

Splash Shield Access Cover

4. Reach through the access hole of the wheel house splash shield and disengage the side
marker socket by rotating counterclockwise a
quarter turn.

Park And Turn Sockets
5. Pull the socket and bulb straight out from the
housing.
6. Separate the bulb from the socket without twisting.
7. Reverse the procedure for installation of new bulb and covers.
FOG LAMPS — IF EQUIPPED
Halogen
See the following steps to replace:

1. Reach under and behind the front fascia/bumper to access the back of the front fog
lamp housing.

2. Disconnect the fog lamp wiring harness connector from the fog lamp bulb.

Fog Lamp Bulb

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.
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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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437
Tires
................................... 323, 397, 401, 406Aging (Life Of Tires)................................... 399Air Pressure............................................... 397Chains....................................................... 404Changing................................................... 329Compact Spare......................................... 401Dual........................................ 332, 406, 411General Information........................ 397, 401High Speed................................................ 398Inflation Pressure...................................... 397Jacking...................................................... 329Life Of Tires............................................... 399Load Capacity............................................ 394
Pressure Monitoring System (TPMS)... 107, 280
Quality Grading.......................................... 406Radial........................................................ 398Replacement............................................. 400Rotation.................................................... 405Safety.............................................. 389, 397Sizes.......................................................... 390Snow Tires................................................. 401Spare Tires...................................... 401, 402Spinning.................................................... 399Trailer Towing............................................ 187Tread Wear Indicators............................... 399Wheel Nut Torque..................................... 411
To Open Hood.................................................. 77Tongue Weight/Trailer Weight...................... 186Torque Converter Clutch............................... 139Towing................................................. 181, 339Disabled Vehicle....................................... 339Guide........................................................ 186Recreational............................................. 194Weight...................................................... 186Towing Behind A Motorhome........................ 194Traction......................................................... 197Traction Control............................................ 277Trailer Sway Control (TSC)............................. 277Trailer Towing............................................... 181Hitches..................................................... 185Minimum Requirements........................... 186Mirrors......................................................... 42Tips........................................................... 192Trailer And Tongue Weight........................ 186Wiring....................................................... 190Trailer Towing Guide..................................... 186Trailer Weight................................................ 186Transfer Case............................................... 374Electronically Shifted....................... 140, 143Fluid......................................................... 421
Transmission................................................. 132Automatic............................... 132, 135, 372Fluid.......................................................... 421Maintenance............................................ 372Shifting..................................................... 130Transporting Pets.......................................... 322Tread Wear Indicators................................... 399Turn Signals.................................. 54, 110, 386
U
Uconnect Phone Call Features
................................. 239Things You Should Know About YourUconnect Phone................................... 242Uconnect Phone............................................ 236Answer Or Ignore An Incoming Call — Call Currently In Progress..................... 241Answer Or Ignore An Incoming Call — No Call Currently In Progress................ 240Bluetooth Communication Link................ 244Call Continuation...................................... 242Call Controls............................................. 240Call Termination....................................... 242Cancel Command..................................... 236
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