maintenance RAM 1500 2023 Workshop Manual

SERVICING AND MAINTENANCE363
F41 A&B –15 Amp BlueLumbar Support & Pass SW / Steering Column Control Module / HVAC
Control Module / ICS Switch Bank / Upper Switch Bank
F42 A&B –10 Amp RedMod Transfer Case Switch Module (TCSM) / SBW / Electric Park Brake
SW / Module TPM Trailer / Module Gateway Can-C Trailer TPM / Seat
LT & RT Vent
F43 A&B –10 Amp RedPort Diagnostics / Front & Rear USB
F44 –20 Amp Yellow Radio / DCSD / Telematics Box Mod / Trailer Gateway Module (360)
F45 30 Amp Pink –Mod Door MUX Driver
F46 30 Amp Pink –Mod Door MUX Passenger
F47 ––Spare
F48A –10 Amp RedRear View Mirror / SW Window Passenger / Rear USB / Wireless
Charging Pad Mod
F49 –15 Amp BlueMod CVPM / SNSR Blind Spot / HDLP Adaptive Front Lighting Sensor
(AFLS)
F50A –10 Amp RedBattery PACK Control Mod (BPCM) *
F51 A&B ––Spare
F52 20 Amp Blue –Direct Battery Feed *
F53 –10 Amp RedTrailer Reverse Steering Control / Trailer Steering Control Knob
F54 A&B –20 Amp YellowPower Outlet Center Seat Battery Feed Position
Power Outlet Center Seat Ignition Feed Position
F55 25 Amp White –Upfitter *
F56 30 Amp Pink –Mod Network Interface *
F57 20 Amp Blue –Direct Battery Feed *
Cavity Cartridge Fuse Micro Fuse Description
* If Equipped
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364SERVICING AND MAINTENANCE
Circuit BreakersF58
20 Amp Blue –Direct Battery Feed *
F60 50 Amp Red –Mod Inverter *
F61 ––Spare
F62 A&B –10 Amp RedITBM / Mod Occupant Class / Mod IAIR Suspension / Mod HVAC / Snsr
In car Temp / Integrated Radar Camera Mod (IRCM) / Humidity Rain &
Light Sensor (HRLS) / Parktronics System Mod (PTS) / Gateway Can-C
Trailer TPM Mod
F63 ––Spare
F64 ––Spare
F65 –10 Amp RedMod ORC
F66 –10 Amp RedRun - Accessory Feed
Cavity Cartridge Fuse Micro Fuse Description
* If Equipped
Cavity Circuit Breaker Description
CB125 AmpDriver Window SW Rear PWR Windows / Overhead SW Rear
Defrost
CB2 25 AmpDriver PWR Seat / Driver Seat Memory Mod
CB3 25 AmpPassenger Power Seat / Passenger Seat Memory Mod

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SERVICING AND MAINTENANCE365
BULB REPLACEMENT
Replacement Bulbs, Names, And Part Numbers
In the instance a bulb needs to be replaced, this section includes bulb description and replacement part numbers. All of the inside bulbs are brass or glass-wedge base. Aluminum base
bulbs are not approved.
NOTE:See an authorized dealer for LED bulb replacement.
Interior Bulbs
Bulb Name Bulb Number
Overhead Console Lamps TS 212–9
Dome Lamp 7679
NOTE:For lighted switches, see an authorized dealer for replacement instructions.
Exterior Bulbs
Bulb Name Bulb Number
Low Beam (Halogen Reflector Headlamp – If Equipped) H11LL
High Beam (Halogen Reflector Headlamp – If Equipped) 9005LL
Low & High Beam (LED Reflector Headlamp) LED
Low & High Beam (LED Projector Headlamp) LED
Turn Signal / Front Position (Halogen Reflector Headlamp – If Equipped) 7444NA
Turn Signal / Front Position (LED Headlamps) LED
Front Side Marker (Halogen Reflector Headlamp – If Equipped) W5W
Front Side Marker LED
Front Fog Lamps (Halogen Reflector Headlamp – If Equipped) H11LL8

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366SERVICING 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. Locate the low beam access cover, which can be
found on the back side of the headlamps.

Low Beam Headlight Cover
NOTE:
It may be necessary to remove/reposition Air Cleaner
Assembly to access passenger side headlamp/side
marker light bulbs.
4. Disengage the bulb access cover by rotating counter
-
clockwise.
5. Disconnect the internal lamp wiring harness connector from the low beam bulb.
Front Fog Lamps
LED
Side Indicators (Front And Side View Mirror – If Equipped) LED
Base Rear Tail/Turn and Stop Lamp 7440LL/W21WLL
Premium Rear Tail/Turn/Backup and Stop Lamp LED
Base Backup Lamp 7440/W21W
Center High Mounted Stop Lamp (CHMSL) 921
Cargo Lamp 921
Rear License Plate Lamp LED
Base Turn Lamp 7440NA / WY21W
Exterior Bulbs
Bulb Name Bulb Number

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SERVICING AND MAINTENANCE367
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

High Beam Headlight Cover

See the following steps to replace:

1. Open the hood.

2. Disconnect and isolate the negative battery cable.
3. Locate the high beam access cover, which can be found on the back side of the headlamps.
NOTE:It may be necessary to remove/reposition Air Cleaner
Assembly to access passenger side headlamp/side
marker light bulbs.
4. Reach behind the headlamp and disengage the access cover by rotating counterclockwise.
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 cover. Front Park And Turn
See the following steps to replace:

1. Open the hood.

2. Disconnect and isolate the negative battery cable.
3. Locate the park and turn socket, which can be found
on the back side of the headlamps.

Park And Turn Socket

4. Reach behind the headlamp and unlock the park and turn socket from the lamp by rotating counter -
clockwise a quarter turn.
5. Pull the 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.
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 replace -
ment. An incorrect bulb size or type may overheat
and cause damage to the lamp, the bulb socket, or
the lamp wiring.
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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368SERVICING AND MAINTENANCE
Side Marker Lamp
See the following steps to replace:

1. Open the hood.

2. Disconnect and isolate the negative battery cable.
3. Locate the side marker lamp, which can be found on
the back side of the headlamps.

Side Marker Lamp

4. Disengage the side marker socket by rotating counterclockwise a quarter turn.
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
Please see an authorized dealer for service on LED and
Halogen front fog lamps.
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

3. Rotate the bulb counterclockwise a quarter turn to unlock the bulb from the housing.
4. Pull the bulb straight out from the housing.
5. Reverse the procedure to install the bulb and cover.
REAR TAIL/STOP, TURN SIGNAL AND BACKUP
LAMPS

1. Remove the two screws and pushpin retainers that pass through the bed sheet metal.

Tail Lamp Locations

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.
1 — Tail Lamp
2 — Fasteners
3 — Pushpin Retainers

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SERVICING AND MAINTENANCE369
2. Pull the outboard side of the lamp rearward far
enough to unsnap the two receptacles on the
outboard side of the lamp housing from the two
plastic snap post retainers in the outer box side
panel.

Tail Lamp Removal

3. Disconnect the wiring harness connectors from the bulb socket.

Wiring Harness Connector

4. Rotate the bulb socket counterclockwise a quarter turn to unlock it from the housing.
5. Pull the bulb straight out of the socket.
6. Reverse the procedure to install the bulb and housing.
CENTER HIGH MOUNTED STOP LAMP (CHMSL)
WITH CARGO LAMP
See the following steps to replace:

1. Remove the four screws holding the housing/lens to the body as shown.

CHMSL Mounting Screw Locations

2. Separate the connector holding the housing and wiring harness to the body.

CHMSL Bulb Location

3. Turn the desired bulb socket a quarter turn counter -
clockwise and remove the socket and bulb from
housing.
4. Pull the desired bulb straight from the socket.
Outside Bulbs: Cargo Lamps
 Inside Bulb: Center High Mounted Stop Lamp
5. Reverse the procedure for installation of bulbs and 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.
CAUTION!
Do not contaminate the bulb glass by touching it with
your fingers or by allowing it to contract other oily
surfaces. Shortened bulb life will result.8

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370SERVICING AND MAINTENANCE
TIRES
TIRE SAFETY INFORMATION
Tire safety information will cover aspects of the following
information: Tire Markings, Tire Identification Numbers,
Tire Terminology and Definitions, Tire Pressures, and Tire
Loading.
Tire Markings

Tire Markings

NOTE:
P (Passenger) — Metric tire sizing is based on US design
standards. P-Metric tires have the letter “P” molded
into the sidewall preceding the size designation.
Example: P215/65R15 95H.
 European — Metric tire sizing is based on European
design standards. Tires designed to this standard have
the tire size molded into the sidewall beginning with the
section width. The letter "P" is absent from this tire size
designation.
Example: 215/65R15 96H.
 LT (Light Truck) — Metric tire sizing is based on US
design standards. The size designation for LT-Metric
tires is the same as for P-Metric tires except for the
letters “LT” that are molded into the sidewall preceding
the size designation.
Example: LT235/85R16.
 Temporary spare tires are designed for temporary
emergency use only. Temporary high pressure compact
spare tires have the letter “T” or “S” molded into the
sidewall preceding the size designation.
Example: T145/80D18 103M.
 High flotation tire sizing is based on US design stan -
dards and it begins with the tire diameter molded into
the sidewall.
Example: 31x10.5 R15 LT.
1 — US DOT Safety Standards Code
(TIN)
2 — Size Designation
3 — Service Description
4 — Maximum Load
5 — Maximum Pressure
6 — Treadwear, Traction and
Temperature Grades

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SERVICING AND MAINTENANCE371
TIRE SIZING CHART
EXAMPLE:
Example Size Designation: P215/65R15XL 95H, 215/65R15 96H, LT235/85R16C, T145/80D18 103M, 31x10.5 R15 LT
P = Passenger car tire size based on US design standards, or
"....blank...." = Passenger car tire based on European design standards, or
LT = Light truck tire based on US design standards, or
T or S = Temporary spare tire or
31 = Overall diameter in inches (in)
215, 235, 145 = Section width in millimeters (mm)
65, 85, 80 = Aspect ratio in percent (%)
 Ratio of section height to section width of tire, or
10.5 = Section width in inches (in)
R = Construction code
 "R" means radial construction, or
 "D" means diagonal or bias construction
15, 16, 18 = Rim diameter in inches (in)
Service Description:
95 = Load Index
 A numerical code associated with the maximum load a tire can carry
H = Speed Symbol
 A symbol indicating the range of speeds at which a tire can carry a load corresponding to its load index under certain operating conditions
 The maximum speed corresponding to the speed symbol should only be achieved under specified operating conditions
(i.e., tire pressure, vehicle loading, road conditions, and posted speed limits)
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372SERVICING AND MAINTENANCE
Tire Identification Number (TIN)
The Tire Identification Number (TIN) may be found on one or both sides of the tire; however, the date code may only be on one side. Tires with white sidewalls will have the full TIN,
including the date code, located on the white sidewall side of the tire. Look for the TIN on the outboard side of black sidewall tires as mounted on the vehicle. If the TIN is not found on
the outboard side, then you will find it on the inboard side of the tire.Load Identification:
Absence of the following load identification symbols on the sidewall of the tire indicates a Standard Load (SL) tire:

XL = Extra load (or reinforced) tire, or
 LL = Light load tire or
 C, D, E, F, G = Load range associated with the maximum load a tire can carry at a specified pressure
Maximum Load – Maximum load indicates the maximum load this tire is designed to carry
Maximum Pressure – Maximum pressure indicates the maximum permissible cold tire inflation pressure for this tire
EXAMPLE:
EXAMPLE:
DOT MA L9 ABCD 0301
DOT = Department of Transportation
 This symbol certifies that the tire is in compliance with the US Department of Transportation tire safety standards and is approved for highway use
MA = Code representing the tire manufacturing location (two digits)
L9 = Code representing the tire size (two digits)
ABCD = Code used by the tire manufacturer (one to four digits)

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