lock Ram 2500 2019 Repair Manual

168 GETTING TO KNOW YOUR INSTRUMENT PANEL
Oil Life Reset Procedure
1. Without pushing the brake pedal, push the ENGINESTART/STOP button and place the ignition to the ON/
RUN position (do not start the engine).
2. Push and release the down arrow button to scroll down -
ward through the main menu to “Vehicle Info.”
3. Push and release the right arrow button to access the
”Vehicle Info” screen, then scroll up or down to select
“Oil Life.”
4. Push and hold the right arrow button to select “Reset”.
5. Push and release the down arrow button to select “Yes,”
then push and release the right arrow button to reset the
Oil Life to 100%.
6. Push and release the up arrow button to exit the instru -
ment cluster display screen. Secondary Method Of Resetting Engine Oil Life
1. Without pressing the brake pedal, push the ENGINE
START/STOP button and place the ignition to the ON/
RUN position (do not start the engine).
2. Fully press the accelerator pedal, slowly, three times within ten seconds.
3. Without pushing the brake pedal, push the ENGINE START/STOP button once to return the ignition to the
OFF/LOCK position.
NOTE:
If the indicator message illuminates when you start the
vehicle, the oil change indicator system did not reset. If
necessary, repeat this procedure.

180 GETTING TO KNOW YOUR INSTRUMENT PANEL
— Air Bag Warning Light
This warning light will illuminate to indicate a fault with the
air bag, and will turn on for four to eight seconds as a bulb
check when the ignition is placed in the ON/RUN or ACC/
ON/RUN position. This light will illuminate with a single
chime when a fault with the air bag has been detected, it will
stay on until the fault is cleared. If the light is either not on
during startup, stays on, or turns on while driving, have the
system inspected at an authorized dealer as soon as possible.
— Brake Warning Light
This warning light monitors various brake functions,
including brake fluid level and parking brake application. If
the brake light turns on it may indicate that the parking
brake is applied, that the brake fluid level is low, or that there
is a problem with the anti-lock brake system reservoir.
If the light remains on when the parking brake has been
disengaged, and the fluid level is at the full mark on the
master cylinder reservoir, it indicates a possible brake
hydraulic system malfunction or that a problem with the
Brake Booster has been detected by the Anti-Lock Brake
System (ABS) / Electronic Stability Control (ESC) system. In
this case, the light will remain on until the condition has been
corrected. If the problem is related to the brake booster, the ABS pump will run when applying the brake, and a brake
pedal pulsation may be felt during each stop.
The dual brake system provides a reserve braking capacity in
the event of a failure to a portion of the hydraulic system. A
leak in either half of the dual brake system is indicated by the
Brake Warning Light, which will turn on when the brake
fluid level in the master cylinder has dropped below a spec
-
ified level.
The light will remain on until the cause is corrected.
NOTE:
The light may flash momentarily during sharp cornering
maneuvers, which change fluid level conditions. The vehicle
should have service performed, and the brake fluid level
checked.
If brake failure is indicated, immediate repair is necessary.
WARNING!
Driving a vehicle with the red brake light on is
dangerous. Part of the brake system may have failed. It
will take longer to stop the vehicle. You could have a
collision. Have the vehicle checked immediately.

GETTING TO KNOW YOUR INSTRUMENT PANEL 181
Vehicles equipped with the Anti-Lock Brake System (ABS)
are also equipped with Electronic Brake Force Distribution
(EBD). In the event of an EBD failure, the Brake Warning
Light will turn on along with the ABS Light. Immediate
repair to the ABS system is required.
Operation of the Brake Warning Light can be checked by
turning the ignition switch from the OFF position to the ON/
RUN position. The light should illuminate for approximately
two seconds. The light should then turn off unless the
parking brake is applied or a brake fault is detected. If the
light does not illuminate, have the light inspected by an
authorized dealer.
The light also will turn on when the parking brake is applied
with the ignition switch in the ON/RUN position.
NOTE:
This light shows only that the parking brake is applied. It
does not show the degree of brake application. — Hood Open Warning Light
This warning light will illuminate when the hood is ajar/
open and not fully closed.
NOTE:
If the vehicle is moving, there will also be a single chime. — Vehicle Security Warning Light — If Equipped

This light will flash at a fast rate for approximately 15 seconds
when the vehicle security alarm is arming, and then will flash
slowly until the vehicle is disarmed.

— Engine Coolant Temperature Warning Light
This warning light warns of an overheated engine condition.
If the engine coolant temperature is too high, this indicator
will illuminate and a single chime will sound. If the tempera -
ture reaches the upper limit, a continuous chime will sound
for four minutes or until the engine is able to cool: whichever
comes first.
If the light turns on while driving, safely pull over and stop
the vehicle. If the A/C system is on, turn it off. Also, shift the
transmission into NEUTRAL and idle the vehicle. If the
temperature reading does not return to normal, turn the
engine off immediately and call for service.
Refer to “If Your Engine Overheats” in “In Case Of Emer -
gency” for further information.
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GETTING TO KNOW YOUR INSTRUMENT PANEL 187
Under-inflation also reduces fuel efficiency and tire tread
life, and may affect the vehicle’s handling and stopping
ability.
Please note that the TPMS is not a substitute for proper tire
maintenance, and it is the driver’s responsibility to maintain
correct tire pressure, even if under-inflation has not reached
the level to trigger illumination of the TPMS low tire pres-
sure telltale.
Your vehicle has also been equipped with a TPMS malfunc -
tion indicator to indicate when the system is not operating
properly. The TPMS malfunction indicator is combined with
the low tire pressure telltale. When the system detects a
malfunction, the telltale will flash for approximately one
minute and then remain continuously illuminated. This
sequence will continue upon subsequent vehicle start-ups as
long as the malfunction exists. When the malfunction indi -
cator is illuminated, the system may not be able to detect or
signal low tire pressure as intended. TPMS malfunctions
may occur for a variety of reasons, including the installation
of replacement or alternate tires or wheels on the vehicle that
prevent the TPMS from functioning properly. Always check
the TPMS malfunction telltale after replacing one or more
tires or wheels on your vehicle to ensure that the replace -
ment or alternate tires and wheels allow the TPMS to
continue to function properly. — Anti-Lock Brake (ABS) Warning Light
This warning light monitors the Anti-Lock Brake System
(ABS). The light will turn on when the ignition is placed in
the ON/RUN or ACC/ON/RUN position and may stay on
for as long as four seconds.
If the ABS light remains on or turns on while driving, then
the Anti-Lock portion of the brake system is not functioning
and service is required as soon as possible. However, the
conventional brake system will continue to operate
normally, assuming the Brake Warning Light is not also on. CAUTION!
The TPMS has been optimized for the original
equipment tires and wheels. TPMS pressures and
warning have been established for the tire size equipped
on your vehicle. Undesirable system operation or sensor
damage may result when using replacement equipment
that is not of the same size, type, and/or style.
Aftermarket wheels can cause sensor damage. Using
aftermarket tire sealants may cause the Tire Pressure
Monitoring System (TPMS) sensor to become
inoperable. After using an aftermarket tire sealant it is
recommended that you take your vehicle to your
authorized dealer to have your sensor function checked.
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188 GETTING TO KNOW YOUR INSTRUMENT PANEL
If the ABS light does not turn on when the ignition is placed
in the ON/RUN or ACC/ON/RUN position, have the brake
system inspected by an authorized dealer. — Rear Axle Locker Fault Indicator Light — If
Equipped
This warning light will illuminate to indicate when a rear
axle locker fault has been detected.
— Service Forward Collision Warning (FCW) Light —
If Equipped
This warning light will illuminate to indicate a fault in the
Forward Collision Warning System. Contact an authorized
dealer for service.
Refer to "Forward Collision Warning (FCW)" in "Safety" for
further information.
— Service 4WD Warning Light — If Equipped

This warning light will illuminate to signal a fault with the 4WD
system. If the light stays on or comes on during driving, it means
that the 4WD system is not functioning properly and that
service is required. We recommend you drive to the nearest
service center and have the vehicle serviced immediately.
— Speed Control Fault Warning Light
This warning light will illuminate to indicate the Speed
Control System is not functioning properly and service is
required. Contact an authorized dealer.
— Sway Bar Fault Warning Light
This light will illuminate when there is a fault in the sway bar
disconnect system.
Yellow Indicator Lights
— Forward Collision Warning Off Indicator Light — If
Equipped
This indicator light illuminates to indicate that Forward
Collision Warning is off.

— Air Suspension Payload Protection Indicator Light —
If Equipped

This indicator light will illuminate to indicate that the
maximum payload may have been exceeded or load leveling
cannot be achieved at its current ride height. Protection
Mode will automatically be selected in order to “protect” the
air suspension system, air suspension adjustment is limited
due to payload.

GETTING TO KNOW YOUR INSTRUMENT PANEL 189
— TOW/HAUL Indicator Light
This indicator light will illuminate when TOW/HAUL mode
is selected.
— Cargo Light — If Equipped
This indicator light will illuminate when the cargo light is
activated by pushing the cargo light button on the headlight
switch.
— Sway Bar Indicator Light — If Equipped
This indicator light will illuminate when the front sway bar
is disconnected.
— Snowplow Mode Indicator Light — If Equipped
This indicator light will illuminate when Snowplow Mode
has been activated.
/ — Air Suspension Alternate Trailer Height
Indicator Light— If Equipped
This light will illuminate when the air suspension system is
set to the Alternate Trailer Height setting. / — Air Suspension Bed Lowering Mode Indicator
Light— If Equipped
This light will illuminate when the Bed Lowering Mode
procedure is complete.
/ — Air Suspension Ride Height Raising Indicator
Light— If Equipped
This light will blink and alert the driver that the vehicle is
changing to a higher ride height.
/ — Air Suspension Ride Height Lowering Indicator
Light— If Equipped
This light will blink and alert the driver that the vehicle is
changing to a lower ride height.
— Front And Rear Axle Lock Indicator Light
This light indicates when the front, rear, or both axles have
been locked. The telltale will display the lock icon on the
front and rear axles to indicate the current lock status.
— Rear Axle Lock Indicator Light
This light indicates when the rear axle lock has been acti -
vated.
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190 GETTING TO KNOW YOUR INSTRUMENT PANEL
— 4WD Lock Indicator Light
This light alerts the driver that the vehicle is in the
four-wheel drive LOCK mode. The front and rear drivesh -
afts are mechanically locked together, forcing the front and
rear wheels to rotate at the same speed.
Refer to “Four-Wheel Drive Operation” in “Starting And
Operating” for further information on four-wheel drive
operation and proper use.
— 4WD Low Indicator Light — If Equipped
This light alerts the driver that the vehicle is in the
four-wheel drive LOW mode. The front and rear driveshafts
are mechanically locked together forcing the front and rear
wheels to rotate at the same speed. Low range provides a
greater gear reduction ratio to provide increased torque at
the wheels.
Refer to “Four-Wheel Drive Operation — If Equipped” in
“Starting And Operating” for further information on
four-wheel drive operation and proper use.
— 4WD High Indicator Light — If Equipped
This light alerts the driver that the vehicle is in the
four-wheel drive HIGH mode. The front and rear driveshafts are mechanically locked together forcing the front and rear
wheels to rotate at the same speed.
— NEUTRAL Indicator Light — If Equipped
This light alerts the driver that the 4WD power transfer case
is in the NEUTRAL mode and the front and rear driveshafts
are disengaged from the powertrain.
Green Indicator Lights
— Adaptive Cruise Control (ACC) Set With Target
Light — If Equipped
This will display when the ACC is set and a target vehicle is
detected.
Refer to “Adaptive Cruise Control (ACC) — If Equipped” in
“Starting And Operating” for further information.
— Adaptive Cruise Control (ACC) Set With No Target
Detected Indicator Light — If Equipped
This light will turn on when the Adaptive Cruise Control is
SET and there is no target vehicle detected.
Refer to "Adaptive Cruise Control (ACC) — If Equipped" in
"Starting And Operating" for further information.

195
(Continued)
SAFETY
SAFETY FEATURES
Anti-Lock Brake System (ABS)
The Anti-Lock Brake System (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.
ABS is activated during braking when the system detects one
or more wheels begin 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 when ABS activates:
• The ABS motor noise (it may continue to run for a short
time after the stop).
• The clicking sound of solenoid valves.
• Brake pedal pulsations.
• A slight drop of the brake pedal at the end of the stop.
These are all normal characteristics of ABS.
WARNING!
• The ABS contains sophisticated electronic equipment that may be susceptible to interference caused by
improperly installed or high output radio transmitting
equipment. This interference can cause possible loss of
anti-lock braking capability. Installation of such equip -
ment 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.

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196 SAFETY
ABS is designed to function with the OEM tires. Modification
may result in degraded ABS performance.
Anti-Lock Brake Warning Light
The yellow “Anti-Lock Brake Warning Light” will turn on
when the ignition is turned to the ON/RUN mode and may
stay on for as long as four seconds.
If the “Anti-Lock Brake 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 “Anti-Lock Brake Warning Light” is on.

If the “Anti-Lock Brake Warning Light” is on, the brake
system should be serviced as soon as possible to restore the
benefits of anti-lock brakes. If the “Anti-Lock Brake Warning
Light” does not come on when the ignition is turned to the
ON/RUN mode, have the light repaired as soon as possible.
Electronic Brake Control System
Your vehicle is equipped with an advanced Electronic Brake
Control system (EBC). This system includes Electronic Brake
Force Distribution (EBD), Anti-Lock Brake System (ABS),
Brake Assist System (BAS), Hill Start Assist (HSA), Traction
Control System (TCS), Electronic Stability Control (ESC),
and Electronic Roll Mitigation (ERM). 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).
• 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)

SAFETY 197
Electronic Brake Force Distribution (EBD)
This function 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 ABS before the front axle.
Brake System Warning Light
The red “Brake System Warning Light” will turn on when
the ignition is turned to 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 func-
tioning properly and that immediate service is required. If
the “Brake System Warning Light” does not come on when
the ignition is turned to the ON/RUN mode, have the light
repaired as soon as possible. Brake Assist System (BAS)
The BAS is designed to optimize the vehicle’s braking capa
-
bility 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 stop -
ping 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.
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.
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