2020 Ram 3500 ignition

408SERVICING AND MAINTENANCE
6. Install the cabin air filter with the arrow on
the filter pointing toward the floor. When
installing the filter cover, press on each end
until you hear an audible click.
7. Reinstall the glove compartment on the hinges.
8. Pull the tension tether outward and reinstall the glove compartment past the travel stops
by pushing in on the glove compartment
sides.
Right Side Of Glove Compartment

NOTE:
Ensure the glove compartment door hinges and
glove compartment travel stops are fully
engaged. 9. Reattach the glove compartment tension
tether by inserting the tether clip in the
glove compartment and sliding the clip
away from the face of the glove
compartment door.
ACCESSORY DRIVE BELT INSPECTIONCAUTION!
The cabin air filter is identified with an arrow
to indicate airflow direction through the filter.
Failure to properly install the filter will result
in the need to replace it more often.
1 — Glove Compartment Travel Stop
2 — Glove Compartment Tension Tether
3 — Glove Compartment Door
WARNING!
Do not attempt to inspect an accessory
drive belt with vehicle running.
When working near the radiator cooling fan,
disconnect the fan motor lead. The fan is
temperature controlled and can start at any
time regardless of ignition mode. You could
be injured by the moving fan blades.
You can be badly injured working on or
around a motor vehicle. Only do service
work for which you have the knowledge and
the proper equipment. If you have any
doubt about your ability to perform a
service job, take your vehicle to a compe -
tent mechanic.

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SERVICING AND MAINTENANCE409
When inspecting accessory drive belts, small
cracks that run across ribbed surface of belt
from rib to rib, are considered normal. These
are not a reason to replace belt. However,
cracks running along a rib (not across) are not
normal. Any belt with cracks running along a rib
must be replaced. Also have the belt replaced if
it has excessive wear, frayed cords or severe
glazing.

Accessory Belt (Serpentine Belt)

Conditions that would require replacement:
Rib chunking (one or more ribs has sepa -
rated from belt body)
Rib or belt wear
Longitudinal belt cracking (cracks between
two ribs)
Belt slips
“Groove jumping" (belt does not maintain
correct position on pulley)
Belt broken (note: identify and correct
problem before new belt is installed)
Noise (objectionable squeal, squeak, or
rumble is heard or felt while drive belt is in
operation)
Some conditions can be caused by a faulty
component such as a belt pulley. Belt pulleys
should be carefully inspected for damage and
proper alignment.
Belt replacement on some models requires the
use of special tools, we recommend having your
vehicle serviced at an authorized dealer.
DRAINING FUEL/WATER SEPARATOR
F
ILTER — DIESEL ENGINE
There are two fuel filter assemblies. One is
located on the driver's side of the engine. The
best access to this water drain valve is from
under the hood. The second one is on the under
body, located in front of the rear axle above the
drive shaft on pick-up models. The Chassis Cab models second filter location is on the frame
behind the front axle. The best access to this
water drain valve is from under the vehicle.
If water is detected in the water separator while
the engine is running, or while the ignition
switch is in the ON position, the “Water In Fuel
Indicator Light” will illuminate and an audible
chime will be heard five times. At this point you
should stop the engine and drain the water from
both of the filters.
CAUTION!
Do not drain the fuel/water separator filter
when the engine is running.
Diesel fuel will damage blacktop paving
surfaces. Drain the filter into an appro-
priate container.
CAUTION!
If the “Water In Fuel Indicator Light” remains
on, DO NOT START the engine before you
drain water from the fuel filters to avoid
engine damage.
7

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410SERVICING AND MAINTENANCE
If the “Water In Fuel Indicator Light” comes on
and a single chime is heard while you are
driving, or with the ignition switch in the ON
position, there may be a problem with your
water separator wiring or sensor. See an
authorized dealer for service.

Upon proper draining of the water from both fuel
filters, the “Water In Fuel Indicator Light” will
remain illuminated for approximately 10 seconds.
If the water was drained while the engine was
running, the “Water In Fuel Indicator Light” may
remain on for approximately three minutes.

NOTE:
Care should be taken in disposing of used fluids
from your vehicle. Used fluids, indiscriminately
discarded, can present a problem to the envi -
ronment. Contact an authorized dealer, service
station, or government agency for advice on
recycling programs and for where used fluids
and filters can be properly disposed of in your
area. Drain the fuel/water separator filters when the
“Water In Fuel Indicator Light” is ON. Within
10 minutes of vehicle shutdown, turn the
engine mounted filter drain valve (located on
the side of the filter assembly)
counterclockwise 1/4 turn, and turn the under
body mounted filter drain valve (located on the
bottom of the filter assembly) counterclockwise
wise 1 full turn. Then turn the ignition switch to
the ON position, and allow any accumulated
water to drain. Leave the drain valve open until
all water and contaminants have been
removed. When clean fuel is visible, close the
drain valve following these guidelines:

1. Rotate the drain clockwise to close until
you feel resistance from the internal seal.

2. Continue turning the drain 1/2 of a turn to properly compress the seal.
NOTE:
Over-compression of the seal due to over-tight -
ening of the drain will damage the seal, cause a
leak, and require the entire sensor to be
replaced.
3. Turn the ignition switch to OFF. The sensor drain should not be over-tightened
during normal service operations to avoid
internal damage and future fuel leaks. The
drain should be closed and secured without the
use of tools.
If more than a couple ounces/milliliters of fuel
have been drained, follow the directions for
“Priming If The Engine Has Run Out Of Fuel.”
ENGINE MOUNTED FUEL FILTER
R
EPLACEMENT — DIESEL ENGINE
NOTE:
Using a fuel filter that does not meet the
manufacturer's filtration and water sepa -
rating requirements can severely impact fuel
system life and reliability.
The engine mounted filter housing is
equipped with a No-Filter-No-Run (NFNR)
feature. Engine will not run if:
a. No filter is installed.
b. Inferior/Non-approved filter is used. Use of OEM filter is required to ensure vehicle
will run.

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412SERVICING AND MAINTENANCE
UNDERBODY MOUNTED FUEL FILTER
R
EPLACEMENT — DIESEL ENGINE
NOTE:
Using a fuel filter that does not meet the
manufacturer's filtration and water sepa -
rating requirements can severely impact fuel
system life and reliability.
The underbody mounted filter housing will
cause the engine not to run if:
a. No filter is installed.

Underbody Mounted Fuel Filter Assembly
1. Ensure engine is turned off.

2. Place drain pan under the fuel filter drain
hose.
3. Open the water drain valve one full turn counterclockwise and completely drain fuel
and water into the approved container.
4. Close the water drain valve.
5. Remove lid using a socket or strap wrench. Rotate counterclockwise for removal.
Remove used o-ring and discard it.
6. Remove the used filter cartridge from the housing and dispose of according to your
local regulations. 7. Wipe clean the sealing surfaces of the lid
and housing.
8. Install new o-ring back into ring groove on the filter housing and lubricate with clean
engine oil.
NOTE:
Water In Fuel (WIF) sensor is re-usable. Service
kit comes with new o-ring for filter canister and
WIF sensor.
PRIMING IF THE ENGINE HAS RUN OUT
O
F FUEL — DIESEL ENGINE

1. Add a substantial amount of fuel to the
tank, approximately 2 to 5 gal (8L to 19L).

2. Three priming cycles must be completed. Turn ignition to the RUN position and wait
approximately 30 seconds. This will activate
the in tank fuel pump. Turn the ignition
1 — Drain Valve
CAUTION!
Diesel fuel will damage blacktop paving
surfaces. Drain the filter into an appro-
priate container.
Do not prefill the fuel filter when installing a
new fuel filter. There is a possibility debris
could be introduced into the fuel filter
during this action. It is best to install the
filter dry and allow the in-tank lift pump to
prime the fuel system.
WARNING!
Do not open the high pressure fuel system
with the engine running. Engine operation
causes high fuel pressure. High pressure fuel
spray can cause serious injury or death.

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SERVICING AND MAINTENANCE417
Under normal operating conditions, the
catalytic converter will not require
maintenance. However, it is important to keep
the engine properly tuned to ensure proper
catalyst operation and prevent possible catalyst
damage. NOTE:
Intentional tampering with emissions control
systems can result in civil penalties being
assessed against you.
In unusual situations involving grossly
malfunctioning engine operation, a scorching
odor may suggest severe and abnormal catalyst
overheating. If this occurs, stop the vehicle, turn
off the engine and allow it to cool. Service,
including a tune-up to manufacturer's
specifications, should be obtained immediately.
To minimize the possibility of catalytic converter
damage:
Do not interrupt the ignition when the trans
-
mission is in gear and the vehicle is in
motion.
Do not try to start the vehicle by pushing or
towing the vehicle.
Do not idle the engine with any ignition
components disconnected or removed, such
as when diagnostic testing, or for prolonged
periods during very rough idle or malfunc -
tioning operating conditions.
COOLING SYSTEM CAUTION!
The catalytic converter requires the use of
unleaded fuel only. Leaded gasoline will
destroy the effectiveness of the catalyst as
an emissions control device and may seri -
ously reduce engine performance and
cause serious damage to the engine.
Damage to the catalytic converter can
result if your vehicle is not kept in proper
operating condition. In the event of engine
malfunction, particularly involving engine
misfire or other apparent loss of perfor -
mance, have your vehicle serviced
promptly. Continued operation of your
vehicle with a severe malfunction could
cause the converter to overheat, resulting
in possible damage to the converter and
vehicle.
WARNING!
You or others can be badly burned by hot
engine coolant (antifreeze) or steam from
your radiator. If you see or hear steam
coming from under the hood, do not open
the hood until the radiator has had time to
cool. Never open a cooling system pressure
cap when the radiator or coolant bottle is
hot.
Keep hands, tools, clothing, and jewelry
away from the radiator cooling fan when
the hood is raised. The fan starts automati -
cally and may start at any time, whether the
engine is running or not.
When working near the radiator cooling fan,
disconnect the fan motor lead or turn the
ignition to the OFF mode. The fan is
temperature controlled and can start at any
time the ignition is in the ON mode.7

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SERVICING AND MAINTENANCE445
(Continued)
increase tread life, help to maintain mud, snow
and wet traction levels and contribute to a
smooth, quiet ride.
Refer to the “Maintenance Plan” for the proper
maintenance intervals. More frequent rotation
is permissible if desired. The reasons for any
rapid or unusual wear should be corrected prior
to rotation being performed.
The suggested rotation method is the “rearward
cross” shown in the following diagram. This
rotation pattern does not apply to some
directional tires that must not be reversed.
Tire Rotation (Rearward Cross)
Dual Rear Wheels — If Equipped
The tires used on dual wheel assemblies should
be matched for wear to prevent overloading one
tire in a set. To check if tires are even, lay a
straight edge across all four tires. The straight
edge should touch all the tires.
Tire Rotation

NOTE:
If your vehicle is equipped with a Tire Pressure
Information System (TPIS):
The Tire Pressure Information System (TPIS)
uses unique sensors in the inner rear wheels
to help identify them from the outer rear
wheels, because of this, the inner and outer
wheel locations can’t be switched.
After a tire rotation is completed, as shown
below, the system can auto learn the loca -
tions of each sensor ID. Auto learning/local -
ization occurs when the vehicle ignition
status is changed from Off to On and speeds
of greater than 5 mph (8km/h) are obtained
and remain over 5 mph (8km/h) for at about
a 15 minute period. You may need to drive
for 20 minutes to account slower speeds and
stops.
If the tires are rotated incorrectly, The auto
localization of the TPIS sensors will fail to
locate correctly resulting in incorrect loca -
tions for the pressure values displayed in the
instrument cluster.
CAUTION!
3500 Dual Rear Tires may only have one
approved direction of rotation. This is to
accommodate the asymmetrical design
(tread pattern) of the On/Off-Road tire and
the use of Outline White Letter (OWL) tires.
7

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468MULTIMEDIA
Privacy of any wireless and wired
communications cannot be assured. Third
parties may unlawfully intercept information
and private communications without your
consent. For further information, refer to “Data
Collection & Privacy” in your Uconnect Owner’s
Manual Supplement or “Onboard Diagnostic
System (OBD II) Cybersecurity” in “Getting To
Know Your Instrument Panel”.
UCONNECT SETTINGS
The Uconnect system uses a combination of
buttons on the touchscreen and buttons on the
faceplate located on the center of the
instrument panel. These buttons allow you to
access and change the customer
programmable features. Many features can
vary by vehicle.
Buttons on the faceplate are located below
and/or beside the Uconnect system in the
center of the instrument panel. In addition,
there is a Scroll/Enter control knob located on
the right side. Turn the control knob to scroll
through menus and change settings. Push the
center of the control knob one or more times to
select or change a setting. Your Uconnect system may also have Screen
Off and Mute buttons on the faceplate.
Push the Screen Off button on the faceplate to
turn off the Uconnect screen. Push the button
again or tap the screen to turn the screen on.
Push the Back Arrow button to exit out of a
Menu or certain option on the Uconnect system.
UCONNECT 3 SETTINGS

Uconnect 3 With 5-inch Display Buttons On The
Touchscreen And Buttons On The Faceplate
Push the SETTINGS button, then press the
Settings button on the touchscreen (if equipped)
to display the settings menu screen. In this mode the Uconnect system allows you to access
programmable features that may be equipped
such as Display, Units, Voice, Clock, Safety &
Driving Assistance, Lights, Doors & Locks, Power
Side Steps, Auto-On Comfort (if equipped),
Engine Off Options, Suspension, Trailer Brake,
Audio, Phone/Bluetooth®, SiriusXM® Setup (if
equipped), Restore Settings, Clear Personal
Data, and System Information.

NOTE:
Only one category may be selected at a time.
When making a selection, press the button on
the touchscreen to enter the desired menu.
Once in the desired menu, press and release
the preferred setting until the button is
highlighted. Once the setting is complete, either
press the Back Arrow or the Done button on the
touchscreen or push the Back button on the
faceplate to return to the previous menu.
Pressing the Up or Down Arrow buttons on the
touchscreen on the right side of the screen will
allow you to toggle up or down through the list
of available settings.
NOTE:
All settings should be changed with the ignition
in the ON/RUN position.
1 — Uconnect Buttons On The Touchscreen
2 — Uconnect Buttons On The Faceplate

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472MULTIMEDIA
Tilt Side Mirrors In Reverse —
If Equipped On
Off
NOTE:
When the “Tilt Side Mirrors In Reverse” feature is selected, the exterior side-view mirrors tilt downward when the ignition is in the ON/RUN position
and the transmission gear selector is in the REVERSE position. The mirrors move back to their previous position when the transmission is shifted out
of REVERSE. Surround View Camera — If Equipped On
Off
NOTE:
The “Surround View Camera” feature displays a complete 360 degree view of the vehicle's exterior environment while backing up. Surround View Camera Delay — If Equipped On
Off
NOTE:
The “Surround View Camera Delay” setting determines whether or not the screen will display the 360 degree view image with guidelines for up to
10 seconds after the vehicle is shifted out of REVERSE. This delay will be canceled if the vehicle’s speed exceeds 8 mph (13 km/h), the transmission
is shifted into PARK, or the ignition is switched to the OFF position.
Surround View Camera Guidelines — If Equipped On
Off
NOTE:
The “Surround View Camera Guidelines” feature allows you to see active guidelines over the Surround View camera display whenever the gear
selector is put into REVERSE or the Surround View button on the touchscreen is pressed. The image will be displayed on the radio touchscreen display.
Setting Name Selectable Options

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