2020 Ram 1500 ECU

414 STARTING AND OPERATING
(Continued)
Perform the maintenance listed in the “Scheduled
Servicing”. Refer to “Scheduled Servicing” in “Servicing
And Maintenance” for the proper maintenance intervals.
When towing a trailer, never exceed the GAWR or GCWR
ratings.• Then, during the first 500 miles (805 km) that a trailer is
towed, do not drive over 50 mph (80 km/h) and do not
make starts at full throttle. This helps the engine and
other parts of the vehicle wear in at the heavier loads.
WARNING!
• Make certain that the load is secured in the trailer and will not shift during travel. When trailering cargo that
is not fully secured, dynamic load shifts can occur that
may be difficult for the driver to control. You could lose
control of your vehicle and have a collision.
• When hauling cargo or towing a trailer, do not overload your vehicle or trailer. Overloading can cause a loss of
control, poor performance or damage to brakes, axle,
engine, transmission, steering, suspension, chassis
structure or tires. CAUTION!
(Continued)
• Safety chains must always be used between your
vehicle and trailer. Always connect the chains to the
hook retainers of the vehicle hitch. Cross the chains
under the trailer tongue and allow enough slack for
turning corners.
• Vehicles with trailers should not be parked on a grade. When parking, apply the parking brake on the tow
vehicle. Put the tow vehicle transmission in PARK. For
four-wheel drive vehicles, make sure the transfer case
is not in NEUTRAL. Always, block or "chock" the
trailer wheels.
• GCWR must not be exceeded.
• Total weight must be distributed between the tow vehicle and the trailer such that the following four
ratings are not exceeded:
• GVWR
• GTW
• GAWR
• Tongue weight rating for the trailer hitch utilized.
WARNING! (Continued)
2020_DT_1500_OM_US.book Page 414

STARTING AND OPERATING 423
be placed in Transport mode (for example, engine will not
run), tie-downs must be fastened to the axles (not to the
body). Failure to follow these instructions may cause fault
codes to be set and/or cause loss of proper tie-down
tension.
Recreational Towing — Two-Wheel Drive Models
DO NOT flat tow this vehicle. Damage to the drivetrain
will result.
Recreational towing (for two-wheel drive models) is allowed
ONLY if the rear wheels are OFF the ground. This may be
accomplished using a tow dolly or vehicle trailer. If using a
tow dolly, follow this procedure:
NOTE:
If vehicle is equipped with air suspension, ensure the vehicle
is set to Normal Ride Height.
1. Properly secure the dolly to the tow vehicle, following the dolly manufacturer's instructions.
2. Drive the rear wheels onto the tow dolly.
3. Apply the parking brake. Place the transmission in PARK. 4. Properly secure the rear wheels to the dolly, following the
dolly manufacturer's instructions.
5. Turn the ignition OFF.
6. Install a suitable clamping device, designed for towing, to secure the front wheels in the straight position.
Recreational Towing — Four-Wheel Drive Models
NOTE:
The transfer case must be shifted into NEUTRAL (N) for
recreational towing. The transmission must be shifted into
PARK for recreational towing. Refer to the following for the
proper transfer case NEUTRAL (N) shifting procedure for
your vehicle. CAUTION!
Towing with the rear wheels on the ground will cause
severe transmission damage. Damage from improper
towing is not covered under the New Vehicle Limited
Warranty.
5
2020_DT_1500_OM_US.book Page 423

450 IN CASE OF EMERGENCY
F11–5 Amp TanOutput to Under-hood Power Distribution
Center (UPDC) Run Coil
F12 –25 Amp Clear Mod Audio Amplifier / Active Noise
Cancellation / SW Inverter
F13 –20 Amp Yellow Mod Seat Heater Front (Driver)
F14 –15 Amp Blue Mod Seat Heater Front (Steering Wheel)
F15 ––Spare
F16 ––Spare
F17 –20 Amp Yellow LT Spot Lamp
F18 30 Amp Pink –Motor Sunshade Sunroof
F19 ––Spare
F20 –20 Amp Yellow Comfort Rear Seat Module (CRSM) (Heat Rear
RT)
F21 ––Spare
F22 ––Spare
F23 ––Spare
F24 –15 Amp Blue Mod RF Hub / Mod Ignition / Mod Cluster
F25 40 Amp Green –Mod Integrated Trailer Brake
F26 –15 Amp Blue Mod Cluster CCN / Mod Cyber Security
F27 –5 Amp Tan Mod Cluster CCN / Mod SGW
Cavity
Cartridge Fuse Micro Fuse Description
2020_DT_1500_OM_US.book Page 450

IN CASE OF EMERGENCY 463
Jacking Instructions
Jack Warning Label
1. Remove the spare tire, jack, and tools from the stored location.
2. Using the lug wrench, loosen the wheel nuts (but do not remove), by turning them counterclockwise one turn
while the wheel is still on the ground.
WARNING!

Carefully follow these tire changing warnings to help
prevent personal injury or damage to your vehicle:
• Always park on a firm, level surface as far from the edge of the roadway as possible before raising the vehicle.
• Turn on the Hazard Warning flasher.

• Block the wheel diagonally opposite the wheel to be raised.

• Apply the parking brake firmly and set the transmission in PARK.
• Never start or run the engine with the vehicle on a jack.
• Do not let anyone sit in the vehicle when it is on a jack.
• Do not get under the vehicle when it is on a jack. If you need to get under a raised vehicle, take it to a service center
where it can be raised on a lift.
• Only use the jack in the positions indicated and for lifting this vehicle during a tire change.
• If working on or near a roadway, be extremely careful of motor traffic.
• To assure that spare tires, flat or inflated, are securely stowed, spares must be stowed with the valve stem facing
the ground.

CAUTION!
Do not attempt to raise the vehicle by jacking on
locations other than those indicated in the Jacking
Instructions for this vehicle.
6
2020_DT_1500_OM_US.book Page 463

IN CASE OF EMERGENCY 467
6. Remove the lug nuts and pull the wheel off. Install thespare wheel and lug nuts with the cone shaped end of the
lug nuts toward the wheel. Hand tighten the lug nuts
with vehicle lifted. To avoid the risk of forcing the vehicle
off the jack, do not fully tighten the lug nuts until the
vehicle has been lowered.
7. Lower vehicle to ground, finish tightening the lug nuts. Push down on the wrench while at the end of the handle
for increased leverage. Tighten the lug nuts in a star
pattern until each nut has been tightened twice.
NOTE:
For the correct lug nut torque refer to “Technical Specifica -
tions” in “Torque Specifications.” If in doubt about the
correct tightness, have them checked with a torque wrench
by an authorized dealer or service station. 8. If your vehicle is equipped with a wheel center cap, install
the cap and remove the wheel blocks. Do not install
chrome or aluminum wheel center caps on the spare
wheel. This may result in cap damage.
9. Lower the jack to its fully closed position. Stow the replaced tire, and secure the jack and tools in the proper
location.
10. Adjust the tire pressure when possible.
WARNING!
Raising the vehicle higher than necessary can make the
vehicle less stable. It could slip off the jack and hurt
someone near it. Raise the vehicle only enough to
remove the tire.WARNING!
A loose tire or jack thrown forward in a collision or hard
stop, could endanger the occupants of the vehicle.
Always stow the jack parts and the spare tire in the
places provided.
6
2020_DT_1500_OM_US.book Page 467

IN CASE OF EMERGENCY 471
3. Secure the tool bag straps to the jack.Jack And Tools Tied
4. Place the jack and tools in the storage position holding the jack by the jack turn-screw, slip the jack and tools under
the seat so that the bottom slot engages into the fastener
on the floor.
NOTE:
Ensure that the jack slides into the front hold down location. 5. Turn the wing bolt clockwise to secure to the floor pan.
Reinstall the plastic cover.
Jack Hold Down Wing Bolt
WARNING!
After using the jack and tools, always reinstall them in
the original carrier and location. While driving you may
experience abrupt stopping, rapid acceleration or sharp
turns. A loose jack, tools, bracket or other objects in the
vehicle may move around with force, resulting in serious
injury.
6
2020_DT_1500_OM_US.book Page 471

476 IN CASE OF EMERGENCY
MANUAL PARK RELEASE
To push or tow the vehicle in cases where the transmission
will not shift out of PARK (P) (such as a dead battery), a
Manual Park Release is available.
Follow these steps to activate the Manual Park Release:
1. Apply firm pressure to the brake pedal while seated inthe driver’s seat.
2. Apply the parking brake if possible.
3. Using a small screwdriver or similar tool, remove the Manual Park Release cover, which is located to the lower
left of the steering column.
Manual Park Release Access Cover
CAUTION!
Driving with a hot cooling system could damage your
vehicle. If the temperature gauge reads HOT (H), pull
over and stop the vehicle. Idle the vehicle with the air
conditioner turned off until the pointer drops back into
the normal range. If the pointer remains on HOT (H),
and you hear continuous chimes, turn the engine off
immediately and call for service.
WARNING!
Always secure your vehicle by fully applying the
parking brake before activating the Manual Park
Release. In addition, you should be seated in the driver’s
seat with your foot firmly on the brake pedal when
activating the Manual Park Release. Activating the
Manual Park Release will allow your vehicle to roll away
if it is not secured by the parking brake, or by proper
connection to a tow vehicle. Activating the Manual Park
Release on an unsecured vehicle could lead to serious
injury or death for those in or around the vehicle.
2020_DT_1500_OM_US.book Page 476

IN CASE OF EMERGENCY 479
Proper towing or lifting equipment is required to prevent
damage to your vehicle. Use only tow bars and other equip-
ment designed for this purpose, following equipment manu-
facturer’s instructions. Use of safety chains is mandatory.
Attach a tow bar or other towing device to main structural
members of the vehicle, not to bumpers or associated
brackets. State and local laws regarding vehicles under tow
must be observed.
If you must use the accessories (wipers, defrosters, etc.)
while being towed, the ignition must be in the ON/RUN
mode, not the ACC mode. If the key fob is unavailable or the vehicle's battery is
discharged, refer to ”Manual Park Release” in this section for
instructions on shifting the transmission out of PARK for
towing.
Towing
Condition Wheels OFF
The Ground 2WD Models
4WD Models
Flat Tow NONE If transmission is operable:
• Transmission in
NEUTRAL
• 30 mph (48 km/h) max speed
• 30 miles (48 km) max distance See instructions in “Recreational Towing”
under “Starting And Operating”
• Automatic Transmission in
PARK
• Transfer Case in NEUTRAL (N)
• Tow in forward direction
Wheel Lift Or Dolly Tow Front
NOT ALLOWED
Rear OK NOT ALLOWED
Flatbed ALL BEST METHOD BEST METHOD
CAUTION!
• Do not use sling type equipment when towing. Vehicle damage may occur.
• When securing the vehicle to a flat bed truck, do not attach to front or rear suspension components. Damage
to your vehicle may result from improper towing.
6
2020_DT_1500_OM_US.book Page 479