warning light RAM 1500 2021 Repair Manual

232STARTING AND OPERATING
Shifting Into N (Neutral)
Use the following procedure to prepare your
vehicle for recreational towing.
1. Bring the vehicle to a complete stop on
level ground, with the engine running.
Apply the parking brake.

2. Press and hold the brake pedal.
3. Shift the transmission to NEUTRAL. The driver's door must be closed (or the driver's
seat belt buckled) so that the transmission
will remain in NEUTRAL when the brake
pedal is released.
NOTE:
If vehicle is equipped with air suspension,
ensure the vehicle is set to Normal Ride Height.
4. Using a ballpoint pen or similar object, push and hold the recessed transfer case N
(Neutral) button (at the center of the
transfer case switches). The N (Neutral)
indicator light will illuminate, and remain lit,
when the shift to N (Neutral) is complete.
After the shift is completed and the N
(Neutral) light stays on, release the N
(Neutral) button.
5. Release the parking brake. 6. Shift the transmission into REVERSE.
7. Release the brake pedal for five seconds
and ensure that there is no vehicle
movement.
8. Repeat steps 6 and 7 with the transmission in DRIVE.
9. Shift the transmission to NEUTRAL. Apply the parking brake. Turn off the engine. For
vehicles with Keyless Enter-N-Go, push and
hold the ENGINE START/STOP button until
the engine shuts off. The transmission will
automatically select PARK when the engine
is turned off.
10. Turn the ignition off.
11. Attach the vehicle to the tow vehicle using a suitable tow bar.
12. Turn the ignition to the ON/RUN mode, but do not start the engine.
13. Release the parking brake.
14. Turn the ignition OFF.
WARNING!
You or others could be injured or killed if you
leave the vehicle unattended with the transfer
case in the N (Neutral) position without first
fully engaging the parking brake. The transfer
case N (Neutral) position disengages both the
front and rear driveshafts from the power -
train and will allow the vehicle to roll, even if
the transmission is in PARK. The parking
brake should always be applied when the
driver is not in the vehicle.
CAUTION!
It is necessary to follow these steps to be cer -
tain that the transfer case is fully in N (Neu -
tral) before recreational towing to prevent
damage to internal parts.

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234STARTING AND OPERATING
(Continued)
(Continued)
DRIVING TIPS
DRIVING ON SLIPPERY SURFACES
Acceleration
Rapid acceleration on snow covered, wet, or
other slippery surfaces may cause the driving
wheels to pull erratically to the right or left. This
phenomenon occurs when there is a difference
in the surface traction under the rear (driving)
wheels.
DRIVING THROUGH WATER
Driving through water more than a few inches/
centimeters deep will require extra caution to
ensure safety and prevent damage to your
vehicle.
Flowing/Rising Water
Shallow Standing Water
Although your vehicle is capable of driving
through shallow standing water, consider the
following Cautions and Warnings before doing
so.
WARNING!
Rapid acceleration on slippery surfaces is
dangerous. Unequal traction can cause sud
-
den pulling of the rear wheels. You could lose
control of the vehicle and possibly have a col -
lision. Accelerate slowly and carefully when -
ever there is likely to be poor traction (ice,
snow, wet, mud, loose sand, etc.).
WARNING!
Do not drive on or across a road or path
where water is flowing and/or rising (as in
storm run-off). Flowing water can wear away
the road or path's surface and cause your
vehicle to sink into deeper water. Further -
more, flowing and/or rising water can carry
your vehicle away swiftly. Failure to follow this
warning may result in injuries that are serious
or fatal to you, your passengers, and others
around you.
WARNING!
Driving through standing water limits your
vehicle’s traction capabilities. Do not
exceed 5 mph (8 km/h) when driving
through standing water.
Driving through standing water limits your
vehicle’s braking capabilities, which
increases stopping distances. Therefore,
after driving through standing water, drive
slowly and lightly press on the brake pedal
several times to dry the brakes.
Failure to follow these warnings may result
in injuries that are serious or fatal to you,
your passengers, and others around you.
CAUTION!
Always check the depth of the standing
water before driving through it. Never drive
through standing water that is deeper than
the bottom of the tire rims mounted on the
vehicle.
Determine the condition of the road or the
path that is under water and if there are any
obstacles in the way before driving through
the standing water.
Do not exceed 5 mph (8 km/h) when
driving through standing water. This will
minimize wave effects.
WARNING! (Continued)

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MULTIMEDIA243
LaneSense Warning This setting will change the distance at which the steering wheel will
provide lane departure feedback. The available settings are “Early”,
“Medium”, and “Late”.
LaneSense Strength
This setting will change the strength of the steering wheel feedback
during a lane departure. The available setting are “Low”, “Medium”, and
“High”.
ParkSense This setting will change the type of ParkSense alert when a close object is
detected. The “Sound Only” setting will provide an audible chime when
an object is detected. The “Sound and Display” setting will provide both
an audible chime and a visual display when an object is detected.
Front ParkSense Volume This setting adjusts the volume of the Front ParkSense system. The
available settings are “Low”, “Medium”, and “High”.
Rear ParkSense Volume This setting adjusts the volume of the Rear ParkSense system. The
available settings are “Low”, “Medium”, and “High”.
Rear ParkSense Braking Assist This setting will turned the Rear ParkSense Braking Assist on or off.
Blind Spot Alert This setting will change the type of alert provided when an object is
detected in a vehicle’s blind spot. The “Off” setting will turn off Blind Spot
Alert. The “Lights” setting will activate the Blind Spot Alert lights on the
outside mirrors. The “Lights & Chime” setting will activate both the lights
on the outside mirrors and an audible chime.
Trailer Length For Blind Spot Alert This setting will auto detect the length of an attached trailer. The “Auto”
setting will have the system automatically set the trailer length. The
“Max” setting will always set the length to the maximum 39.5 ft (12 m).
Hill Start Assist This setting will turn the Hill Start Assist system on or off.
Setting NameDescription
5

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MULTIMEDIA249
Suspension/Air Suspension — If Equipped
When the Suspension/Air Suspension button is pressed on the touchscreen, the system will display settings related to the vehicle’s air suspension.Headlight Off Delay
This setting will allow you to set the amount of time the headlights remain
on after the vehicle has been turned off. The “+” will increase the amount
of time. The “-” will decrease the amount of time.
Auto Entry/Exit — If Equipped This setting will automatically lower the vehicle ride height for easier
entry and exit of the vehicle.
Setting Name
Description
Setting NameDescription
Sound Horn With Lower This setting will sound the horn when the Lower button is pressed on the
key fob.
Flash Lights With Lower This setting will flash the lights when the Lower button is pressed on the
key fob.
Display Suspension Messages This setting will display suspension messages in the Instrument Cluster
Display. The “All” setting will display all available messages. The
“Warnings Only” setting will only display warning messages.
Aero Mode
This setting will automatically adjust the vehicle ride height depending on
the vehicle speed.
Tire Jack Mode This setting will disable the air suspension system to assist in changing a
spare tire.
Transport Mode This setting will disable the air suspension system for flat towing.
5

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286MULTIMEDIA
Connected Services Status:
This statement will indicate your SiriusXM
Guardian™-equipped vehicle.
Remote Commands:
For vehicles with an active SiriusXM
Guardian™ subscription, press one of these
icons and enter your four-digit SiriusXM
Guardian™ Security PIN to remotely start (if
equipped), lock/unlock doors or sound the
horn and flash the lights.
Editing Your Notifications
Notifications are an important element of your
SiriusXM Guardian™ account. For example, any
time you use your remote services (such as
Remote Door Unlock), you can elect to receive a
text message, push notification, and/or E-mail
to notify you of the event. To set up the
notifications, please follow these instructions.

1. Log on to your Owner’s Account at
https://
www.mopar.com/en-us.html (US Residents)
and select “Dashboard”, or www.mopar.ca

(Canadian Residents), select “My Vehicle”
and then “Dashboard”.

2. Click the Edit/Edit Profile button. 3. Once there, select “SiriusXM Guardian™”
where can edit Notification Preferences.
4. You can enter a mobile phone and/or email address to notify you, and you can
customize the types of messages.
USING SIRIUSXM GUARDIAN™
SOS Call
Access To Emergency Services At The Push Of A
Button SiriusXM Guardian™ In-Vehicle Assistance
Features
With SiriusXM Guardian™, your vehicle has
onboard assistance features located on the
rearview mirror or overhead console designed
to enhance your driving experience if you should
ever need assistance or support.
Description
SOS Call offers a convenient way to get in contact
with a SiriusXM Guardian™ Customer Care agent
in the event of an emergency. When the
connection between the vehicle and the live
agent is made, your vehicle will automatically
transmit location information. In the event of a
minor collision, medical or any other emergency,
press the SOS button to be connected to a call
center agent who can send emergency
assistance to your vehicle’s location.
NOTE:
Certain SiriusXM Guardian™ services are
dependent on an operational Uconnect system,
cellular network availability that is compatible
with the device in your vehicle, and GPS
network availability. Not all features of SiriusXM
Guardian™ are available everywhere at all
times, particularly in remote or enclosed areas.
WARNING!
Some SiriusXM Guardian™ services,
including SOS Call and Roadside Assistance
Call will NOT work without a network
connection compatible with your device.
Center Light Status Description
Off
No call activated
Green Active call in progress Red System error

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288MULTIMEDIA
(Continued)
(Continued)
Requirements

This feature is available only on vehicles sold
in the US or Canada.
Vehicle must be properly equipped with the
SiriusXM Guardian™ system. Vehicle must be
registered with SiriusXM Guardian™ and
have an active subscription that includes the
applicable feature.
Vehicle must have an operable LTE (voice/
data) or 3G or 4G (data) network connection
compatible with your device.
Vehicle must be powered in the ON/RUN or
ACC (Accessory) position with a properly func -
tioning electrical system.
WARNING!
Never place anything on or near the
vehicle’s LTE (voice/data) or 3G or 4G
(data) and GPS antennas. You could
prevent LTE (voice/data) or 4G (data) and
GPS signal reception, which can prevent
your vehicle from placing an emergency
call.
Do not add any aftermarket electrical equip -
ment to the vehicle’s electrical system. This
may prevent your vehicle from sending a
signal to initiate an emergency call. To avoid
interference that can cause the SOS Call
system to fail, never add aftermarket equip -
ment (e.g., two-way mobile radio, CB radio,
data recorder, etc.) to your vehicle’s elec -
trical system or modify the antennas on your
vehicle. IF YOUR VEHICLE LOSES POWER
FOR ANY REASON (INCLUDING DURING OR
AFTER AN ACCIDENT), NEITHER THE UCON-
NECT APPS NOR THE SIRIUSXM
GUARDIAN™ SERVICES WILL OPERATE.
The Occupant Restraint Controller (ORC)
turns on the Air Bag Warning Light on the
instrument panel if a malfunction in any part
of the air bag system is detected. If the Air Bag
Warning Light is illuminated, the air bag
system may not be working properly and the
SOS Call system may not be able to send a
signal to the SiriusXM Guardian™ Customer
Care center. If the Air Bag Warning Light is illu -
minated, have an authorized dealer service
your vehicle immediately.
WARNING! (Continued)
Ignoring the Rearview Mirror Light could
mean you will not have SOS Call services if
needed. If the Rearview Mirror Light is illu -
minated, have an authorized dealer service
the SOS Call system immediately.
If anyone in the vehicle could be in danger
(e.g., fire or smoke is visible, dangerous
road conditions or location), do not wait for
voice contact from a SiriusXM Guardian™
Customer Care agent. All occupants should
exit the vehicle immediately and move to a
safe location.
Failure to perform scheduled maintenance
and regular inspection of your vehicle may
result in vehicle damage, accident or injury.
WARNING! (Continued)

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310 (Continued)
SAFETY
SAFETY FEATURES
ANTI-LOCK BRAKE SYSTEM (ABS)
The ABS provides increased vehicle stability
and brake performance under most braking
conditions. The system automatically prevents
wheel lock, and enhances vehicle control during
braking.
The ABS performs a self-check cycle to ensure
that the ABS is working properly each time the
vehicle is started and driven. During this
self-check, you may hear a slight clicking sound
as well as some related motor noises.
The ABS is activated during braking when the
system detects one or more wheels are
beginning to lock. Road conditions such as ice,
snow, gravel, bumps, railroad tracks, loose
debris, or panic stops may increase the
likelihood of ABS activation(s).You also may experience the following normal
characteristics when ABS activates:
ABS motor noise or clicking sounds (you may
continue to hear for a short time after the
stop)
Brake pedal pulsations
A slight drop of the brake pedal at the end of
the stop
The ABS is designed to function with the
Original Equipment Manufacturer (OEM) tires.
Modification may result in degraded ABS
performance.
WARNING!
The ABS contains sophisticated electronic
equipment that may be susceptible to inter -
ference caused by improperly installed or
high output radio transmitting equipment.
This interference can cause possible loss of
anti-lock braking capability. Installation of
such equipment should be performed by
qualified professionals.
Pumping of the Anti-Lock Brakes will
diminish their effectiveness and may lead
to a collision. Pumping makes the stopping
distance longer. Just press firmly on your
brake pedal when you need to slow down or
stop.
The ABS cannot prevent the natural laws of
physics from acting on the vehicle, nor can
it increase braking or steering efficiency
beyond that afforded by the condition of the
vehicle brakes and tires or the traction
afforded.
The ABS cannot prevent collisions,
including those resulting from excessive
speed in turns, following another vehicle
too closely, or hydroplaning.
The capabilities of an ABS equipped vehicle
must never be exploited in a reckless or
dangerous manner that could jeopardize
the user’s safety or the safety of others.
WARNING! (Continued)

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SAFETY311
Anti-Lock Brake System (ABS) Warning
Light
The yellow ABS Warning Light will turn on when
the ignition is placed in the ON/RUN mode and
may stay on for as long as four seconds.
If the ABS Warning Light remains on or comes
on while driving, it indicates that the anti-lock
portion of the brake system is not functioning
and that service is required. However, the
conventional brake system will continue to
operate normally if the ABS Warning Light is on.
If the ABS Warning Light is on, the brake system
should be serviced as soon as possible to
restore the benefits of anti-lock brakes. If the
ABS Warning Light does not come on when the
ignition is placed in the ON/RUN mode, have
the light repaired as soon as possible.
ELECTRONIC BRAKE CONTROL (EBC)
S
YSTEM
Your vehicle is equipped with an advanced
Electronic Brake Control (EBC) system. This
system includes Anti-Lock Brake System (ABS),
Brake Assist System (BAS), Electronic Brake
Force Distribution (EBD), Electronic Roll
Mitigation (ERM), Electronic Stability Control
(ESC), Hill Start Assist (HSA), and Traction Control System (TCS). These systems work
together to enhance both vehicle stability and
control in various driving conditions.
Your vehicle may also be equipped with Trailer
Sway Control (TSC) and Hill Descent Control
(HDC).
Brake Assist System (BAS)
The BAS is designed to optimize the vehicle’s
braking capability during emergency braking
maneuvers. The system detects an emergency
braking situation by sensing the rate and
amount of brake application, and then applies
optimum pressure to the brakes. This can help
reduce braking distances. The BAS
complements the Anti-Lock Brake System
(ABS). Applying the brakes very quickly results
in the best BAS assistance. To receive the
benefit of the system, you must apply
continuous braking pressure during the
stopping sequence (do not “pump” the brakes).
Do not reduce brake pedal pressure unless
braking is no longer desired. Once the brake
pedal is released, the BAS is deactivated.
Brake System Warning Light
The red Brake System Warning Light will turn on
when the ignition is placed in the ON/RUN
mode and may stay on for as long as four
seconds.
If the Brake System Warning Light remains on or
comes on while driving, it indicates that the
brake system is not functioning properly and
that immediate service is required. If the Brake
System Warning Light does not come on when
the ignition is placed in the ON/RUN mode,
have the light repaired as soon as possible.
WARNING!
The Brake Assist System (BAS) cannot
prevent the natural laws of physics from
acting on the vehicle, nor can it increase the
traction afforded by prevailing road
conditions. BAS cannot prevent collisions,
including those resulting from excessive
speed in turns, driving on very slippery
surfaces, or hydroplaning. The capabilities of
a BAS-equipped vehicle must never be
exploited in a reckless or dangerous manner,
which could jeopardize the user's safety or
the safety of others.
6

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312SAFETY
Electronic Brake Force Distribution (EBD)
EBD manages the distribution of the braking
torque between the front and rear axles by
limiting braking pressure to the rear axle. This is
done to prevent overslip of the rear wheels to
avoid vehicle instability, and to prevent the rear
axle from entering the Anti-Lock Brake System
(ABS) before the front axle.
Electronic Roll Mitigation (ERM)
The ERM system anticipates the potential for
wheel lift by monitoring the driver’s steering
wheel input and the speed of the vehicle. When
ERM determines that the rate of change of the
steering wheel angle and vehicle’s speed are
sufficient to potentially cause wheel lift, it then
applies the appropriate brake and may also
reduce engine power to lessen the chance that
wheel lift will occur. ERM can only reduce the
chance of wheel lift occurring during severe or
evasive driving maneuvers; it cannot prevent
wheel lift due to other factors, such as road
conditions, leaving the roadway, striking objects
or other vehicles.
Electronic Stability Control (ESC)
ESC enhances directional control and stability
of the vehicle under various driving conditions.
ESC corrects for oversteering or understeering
of the vehicle by applying the brake of the
appropriate wheel(s) to counteract the above
conditions. Engine power may also be reduced
to help the vehicle maintain the desired path.
Oversteer — when the vehicle is turning more
than appropriate for the steering wheel posi -
tion.
Understeer — when the vehicle is turning less
than appropriate for the steering wheel posi -
tion.
ESC uses sensors in the vehicle to determine
the vehicle path intended by the driver and
compares it to the actual path of the vehicle.
When the actual path does not match the
intended path, ESC applies the brake of the
appropriate wheel to assist in counteracting the
oversteer or understeer condition.
The ESC Activation/Malfunction Indicator Light
located in the instrument cluster will start to
flash as soon as the ESC system becomes
active. The ESC Activation/Malfunction
Indicator Light also flashes when the TCS is
active. If the ESC Activation/Malfunction
Indicator Light begins to flash during
acceleration, ease up on the accelerator and
apply as little throttle as possible. Be sure to
adapt your speed and driving to the prevailing
road conditions.
WARNING!
Many factors, such as vehicle loading, road
conditions and driving conditions, influence
the chance that wheel lift or rollover may
occur. ERM cannot prevent all wheel lift or roll
overs, especially those that involve leaving
the roadway or striking objects or other
vehicles. The capabilities of an
ERM-equipped vehicle must never be
exploited in a reckless or dangerous manner
which could jeopardize the user's safety or
the safety of others.

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SAFETY313
(Continued)
ESC Operating Modes
Depending upon model and mode of operation,
the ESC system may have multiple operating
modes. ESC On
This is the normal operating mode for the ESC.
Whenever the vehicle is started, the ESC system
will be in this mode. This mode should be used
for most driving conditions. Alternate ESC
modes should only be used for specific reasons
as noted in the following paragraphs.
Partial Off
This mode may be useful if the vehicle becomes
stuck. This mode may modify TCS and ESC
thresholds for activation, which allows for more
wheel spin than normally allowed.
To enter the “Partial Off” mode, momentarily
push the ESC OFF switch and the ESC OFF
Indicator Light will illuminate. To turn the ESC
on again, momentarily push the ESC OFF switch
and the ESC OFF Indicator Light will turn off.
NOTE:
For vehicles with multiple partial ESC modes,
the push and release of the button will toggle
the ESC modes. Multiple attempts may be
required to return to “ESC On”.
WARNING!
Electronic Stability Control (ESC) cannot
prevent the natural laws of physics from
acting on the vehicle, nor can it increase
the traction afforded by prevailing road
conditions. ESC cannot prevent accidents,
including those resulting from excessive
speed in turns, driving on very slippery
surfaces, or hydroplaning. ESC also cannot
prevent accidents resulting from loss of
vehicle control due to inappropriate driver
input for the conditions. Only a safe, atten
-
tive, and skillful driver can prevent acci -
dents. The capabilities of an ESC equipped
vehicle must never be exploited in a reck -
less or dangerous manner which could
jeopardize the user’s safety or the safety of
others.Vehicle modifications, or failure to properly
maintain your vehicle, may change the
handling characteristics of your vehicle,
and may negatively affect the performance
of the ESC system. Changes to the steering
system, suspension, braking system, tire
type and size or wheel size may adversely
affect ESC performance. Improperly
inflated and unevenly worn tires may also
degrade ESC performance. Any vehicle
modification or poor vehicle maintenance
that reduces the effectiveness of the ESC
system can increase the risk of loss of
vehicle control, vehicle rollover, personal
injury and death.
WARNING! (Continued)
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