automatic transmission Ram 3500 Chassis Cab 2020 Service Manual

340SERVICING AND MAINTENANCE
Change automatic transmission
fluid and filter(s). X
Replace Crankcase Ventilation
Filter (CCV). X
X
Mileage or time passed
(whichever comes first):
7,500
15,000
22,500
30,000
37,500
45,000
52,500
60,000
67,500
75,000
82,500
90,000
97,500
105,000
112,500
120,000
127,500
135,000
142,500
150,000
Or Months:6
12
18
24
30
36
42
48
54
60
66
72
78
84
90
96
102
108
114
120
Or Kilometers:
12,000
24,000
36,000
48,000
60,000
72,000
84,000
96,000
108,000
120,000
132,000
144,000
156,000
168,000
180,000
192,000
204,000
216,000
228,000
240,000

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344SERVICING AND MAINTENANCE
6.7L Engine
1 — Battery 7 — Brake Fluid Reservoir Cap
2 — Engine Coolant Reservoir Cap 8 — Battery
3 — Engine Coolant Pressure Reservoir 9 — Power Distribution Center (Fuses)
4 — Engine Oil Fill 10 — Washer Fluid Reservoir Cap
5 — Engine Oil Dipstick 11 — Power Steering Fluid Reservoir Cap
6 — Automatic Transmission Dipstick 12 — Air Cleaner Filter

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368SERVICING AND MAINTENANCE
Automatic Transmission
Selection Of Lubricant
It is important to use the proper transmission
fluid to ensure optimum transmission perfor-
mance and life. Use only the manufacturer’s
specified transmission fluid. Refer to “Fluids
And Lubricants” in “Technical Specifications”. It
is important to maintain the transmission fluid
at the correct level using the recommended
fluid. No chemical flushes should be used in any
transmission; only the approved lubricant
should be used.
Special Additives
The manufacturer strongly recommends
against using any special additives in the trans -
mission. Automatic Transmission Fluid (ATF) is
an engineered product and its performance
may be impaired by supplemental additives.
Therefore, do not add any fluid additives to the
transmission. The only exception to this policy is
the use of special dyes for diagnosing fluid
leaks in six-speed transmissions. Avoid using
transmission sealers as they may adversely
affect seals.
Fluid Level Check — Eight-Speed
Transmission
The fluid level is preset at the factory and does
not require adjustment under normal operating
conditions. Routine fluid level checks are not
required, therefore the transmission has no dipstick. An authorized dealer can check your
transmission fluid level using special service
tools.
If you notice fluid leakage or transmission
malfunction, visit an authorized dealer immedi
-
ately to have the transmission fluid level
checked. Operating the vehicle with an
improper fluid level can cause severe transmis -
sion damage.
Fluid Level Check — Six-Speed Transmission
It is best to check the fluid level when the trans -
mission is at normal operating temperature
(158-176°F / 70-80°C). This normally occurs
after at least 15 miles (25 km) of driving. At
normal operating temperature the fluid cannot
be held comfortably between the fingertips. You
can read the transmission sump temperature in
the instrument cluster screen (refer to “Instru -
ment Cluster Display” in “Getting To Know Your
Instrument Panel” for further information).
CAUTION!
Using a transmission fluid other than the
manufacturer’s recommended fluid may
cause deterioration in transmission shift
quality and/or torque converter shudder, and
(for six-speed transmissions) will require
more frequent fluid and filter changes. Refer
to “Fluids And Lubricants” in “Technical
Specifications” for fluid specifications.
CAUTION!
Do not use chemical flushes in your
transmission as the chemicals can damage
your transmission components. Such damage
is not covered by the New Vehicle Limited
Warranty.
CAUTION!
If a transmission fluid leak occurs, visit an
authorized dealer immediately. Severe
transmission damage may occur. An
authorized dealer has the proper tools to
adjust the fluid level accurately.

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TECHNICAL SPECIFICATIONS409
Chassis
Component Fluid, Lubricant, or Genuine Part
Automatic Transmission – Eight-Speed Use only Mopar ZF 8&9 Speed ATF Automatic Transmission Fluid,
orequivalent. Failure to use the correct fluid may affect the function
orperformance of your transmission.
Automatic Transmission – Six-Speed Use only Mopar ASRC Automatic Transmission Fluid or equivalent. Failure
to use the proper fluid may affect the function or performance of your
transmission.
Transfer Case We recommend you use Mopar Transfer Case Lubricant for Borg Warner
44-44 and 44-45.
Front and Rear Axle Fluid (3500) We recommend you use SAE 75W-85 HD Ram GL-5 Synthetic Axle
Lubricant in 9.25 Front & 11.5 Rear Axles. Use Mopar Synthetic Gear
Lubricant SAE 75W-140 (MS-8985) in 12.0 Rear axles. Limited slip
additive is required for limited slip axles
Front and Rear Axle Fluid (4500/5500) We recommend you use SAE 75W-85 HD Ram GL-5 Synthetic Axle
Lubricant. Limited slip additive is required for limited slip axles
Brake Master Cylinder We recommend you use Mopar DOT 3 and SAE J1703.
Power Steering Reservoir We recommend you use Mopar Power Steering Fluid +4, Mopar ATF+4
Automatic Transmission Fluid.
8

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412TECHNICAL SPECIFICATIONS
Chassis
Component Fluid, Lubricant, or Genuine Part
Automatic Transmission Only use Mopar ASRC Automatic Transmission Fluid or equivalent. Failure
to use the proper fluid may affect the function or performance of your
transmission.
Transfer Case We recommend you use Mopar BW44–44 Transfer Case Fluid.
Front and Rear Axle Fluid (3500) We recommend you use SAE 75W-85 HD Ram GL-5 Synthetic Axle
Lubricant in 9.25 Front & 11.5 Rear Axles. Use Mopar Synthetic Gear
Lubricant SAE 75W-140 (MS-8985) in 12.0 Rear axles. Limited slip
additive is required for limited slip axles.
Front and Rear Axle Fluid (4500/5500) We recommend you use SAE 75W-85 HD Ram GL-5 Synthetic Axle
Lubricant. Limited slip additive is required for limited slip axles.

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MULTIMEDIA423
Doors & Locks
After pressing the Doors & Locks button on the touchscreen, the following settings will be available:
Setting Name Selectable Options
Auto Door Locks — If EquippedOn Off
NOTE:
When the “Auto Door Locks” feature is selected, all doors lock automatically when the vehicle reaches a speed of 15 mph (24 km/h). Auto Unlock On Exit On Off
NOTE:
When the “Auto Unlock On Exit” feature is selected, all doors unlock when the vehicle is stopped, the transmission is in the PARK or NEUTRAL position
and the driver's door is opened. Sound Horn With Lock Off1st Press 2nd Press
Remote Door Unlock All Driver
NOTE:
The “Remote Door Unlock” feature allows you to program your remote door locks to open “All doors” or only the “Driver door” with the first push of
the key fob or grabbing the Passive Entry door handle. Sound Horn With Remote Start On Off
NOTE:
When the “Sound Horn With Remote Start” feature is selected, the horn sounds when the remote start is activated. Memory Linked To Fob — If Equipped On
Off
NOTE:
The “Memory Linked To Fob” feature provides automatic driver seat positioning to enhance driver mobility when entering and exiting the vehicle.
The seat returns to the memorized seat location if “Memory Linked To Fob” is set to “On” when the key fob is used to unlock the door.
9

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436MULTIMEDIA
Mirrors & Wipers
After pressing the Mirrors & Wipers button on the touchscreen, the following settings will be available:Forward Collision Warning
Sensitivity — If Equipped Near
Med Far
NOTE:
Sets the distance in which a Forward Collision Warning occurs. Front ParkSense Volume LowMed High
Rear ParkSense Volume LowMed High
Power Side Steps — If Equipped Auto Store
Blind Spot Alert OffLightsLights & Chime
Hill Start Assist — If Equipped On Off
Tire Fill Assist — If Equipped On Off
Setting Name Selectable Options
Setting NameSelectable Options
Tilt Side Mirrors In Reverse — If Equipped OnOff
NOTE:
When the “Tilt Side Mirrors In Reverse” feature is selected, the outside side-view mirrors will tilt downward when the ignition is in the ON/RUN position
and the transmission gear selector is in the REVERSE position. The mirrors will move back to their previous position when the transmission is shifted
out of REVERSE. Rain Sensing Auto Wipers — If Equipped OnOff
NOTE:
Automatically adjusts the wiper speed based on the amount of precipitation. Headlights with Wipers OnOff

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438MULTIMEDIA
Doors & Locks
After pressing the Doors & Locks button on the touchscreen, the following settings will be available:Flash Lights With Lock
OnOff
NOTE:
When the “Flash Lights With Lock” feature is selected, the exterior lamps flash when the doors are locked or unlocked with the key fob. This feature
may be selected with or without the “Sound Horn With Lock” feature selected. Rear Guidance Lights w/ Cargo Lights — If Equipped On
Off
NOTE:
When the “Rear Guidance Lights w/ Cargo Lights” feature is selected, the lights in the cargo and bed of the truck will come on either when the head -
light switch is pressed, or the button on the back bed of the truck is pressed.
Setting Name Selectable Options
Setting NameSelectable Options
Auto Door Locks — If EquippedOn Off
NOTE:
When the “Auto Door Locks” feature is selected, all doors lock automatically when the vehicle reaches a speed of 15 mph (24 km/h). Auto Unlock On Exit On Off
NOTE:
When the “Auto Unlock On Exit” feature is selected, all doors unlock when the vehicle is stopped and the transmission is in the PARK or NEUTRAL
position and the driver's door is opened.

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456MULTIMEDIA
Mirrors & Wipers
After pressing the Mirror and Wipers button on the touchscreen, the following settings will be available:
Lights
After pressing the Lights button on the touchscreen, the following settings will be available:
Setting Name Selectable Options
Tilt Side Mirrors In Reverse — If Equipped OnOff
NOTE:
When the “Tilt Side Mirrors In Reverse” feature is selected, the outside side-view mirrors will tilt downward when the ignition is in the ON/RUN position
and the transmission gear selector is in the REVERSE position. The mirrors will move back to their previous position when the transmission is shifted
out of REVERSE. Rain Sensing Auto Wipers OnOff
NOTE:
Automatically adjusts the wiper speed based on the amount of precipitation. Headlights with Wipers OnOff
Setting Name Selectable Options
Headlight Illumination On Approach –+
NOTE:
When the “Headlight Illumination On Approach” feature is selected, the headlights will activate and remain on for 0, 30, 60, or 90 seconds when the
doors are unlocked with the key fob. Headlight Off Delay -+
NOTE:
When the “Headlight Off Delay” feature is selected, the driver can choose to have the headlights remain on for 0, 30, 60, or 90 seconds when exiting
the vehicle.

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504
INDEX
A
Accessories..........................................413Mopar.............................................413Adaptive Cruise Control (ACC) (Cruise
Control)...............................................232Adding Engine Coolant (Antifreeze)............364Adding Fuel..........................................269Additives, Fuel......................................400AdjustDown................................................31Forward.............................................31Rearward...........................................31Up....................................................31Adjustable Pedals....................................39Air BagAir Bag Operation...............................153Air Bag Warning Light..........................151Enhanced Accident Response.......158, 328Event Data Recorder (EDR)...................328If Deployment Occurs..........................157Knee Impact Bolsters..........................154Maintaining Your Air Bag System............158Maintenance.....................................158Transporting Pets...............................179Air Bag Light......................... 108, 151, 181Air Cleaner, Engine (Engine Air
Cleaner Filter)............................... 349, 371
Air Conditioner Maintenance.................... 351Air Conditioner Refrigerant............... 351, 352Air Conditioner System............................ 351Air Conditioning................................. 52, 62Air Conditioning Filter....................... 64, 352Air Conditioning System............................ 62Air Conditioning, Operating Tips.................. 63Air Filter.............................................. 349Air PressureTires............................................... 383AlarmPanic................................................ 14Security Alarm............................. 24, 110Alterations/ModificationsVehicle.............................................. 11Android Auto........................................ 496Antifreeze (Engine Coolant)...................... 364Capacites......................................... 405Disposal.......................................... 365Anti-Lock Brake System (ABS)................... 120Anti-Lock Warning Light........................... 114Apple CarPlay....................................... 497Assist, Hill Start..................................... 122Audio Systems (Radio)............................ 414Auto Down Power Windows........................ 65Auto Unlock, Doors................................ 216Automatic Door Locks............................... 29
Automatic Headlights............................... 46Automatic Temperature Control (ATC).......... 62Automatic Transmission................. 213, 370Adding Fluid..................................... 370Fluid And Filter Change....................... 370Fluid Change.................................... 370Fluid Level Check.............................. 368Fluid Type........................ 368, 409, 412Shifting........................................... 207Special Additives............................... 368Automatic Transmission Limp Home Mode.. 216AUX Camera................................. 261, 267Auxiliary Driving Systems........................ 129Axle Fluid.....................370, 371, 409, 412Axle Lubrication............................ 370, 371
B
Back-Up.............................................. 258Back-Up Camera................................... 258Battery....................................... 110, 346Blanket........................................... 196Charging System Light........................ 110Keyless Key Fob Replacement................ 14Battery Saver Feature.............................. 48Belts, Seat........................................... 180Body Builders Guide................................ 11Body Mechanism Lubrication................... 360

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