2020 Ram 1500 sensor

7

To Manually Turn Off The Stop Start System ......... 336
To Manually Turn On The Stop Start System ......... 337
System Malfunction .................................................... 337
 SPEED CONTROL — IF EQUIPPED ............................. 337
To Activate ................................................................... 338
To Set A Desired Speed .............................................. 338
To Vary The Speed Setting ......................................... 338
To Accelerate For Passing ......................................... 340
To Resume Speed ....................................................... 340
To Deactivate ............................................................... 340
 ADAPTIVE CRUISE CONTROL (ACC) — IF
EQUIPPED ......................................................................... 340
Adaptive Cruise Control (ACC) Operation............. 342
Activating Adaptive Cruise Control (ACC) ............ 343
To Activate/Deactivate .............................................. 344
To Set A Desired ACC Speed..................................... 345
To Cancel ...................................................................... 345
To Turn Off................................................................... 346
To Resume .................................................................... 346
To Vary The Speed Setting ......................................... 346
Setting The Following Distance In ACC .................. 348
Overtake Aid ................................................................ 351
ACC Operation At Stop.............................................. 351
Adaptive Cruise Control (ACC) Menu.....................352
Display Warnings And Maintenance .......................353
Precautions While Driving With ACC .....................355
General Information ....................................................358
Normal (Fixed Speed) Cruise Control Mode...........359
 PARKSENSE FRONT AND REAR PARK ASSIST .......361
ParkSense Sensors........................................................363
ParkSense Warning Display.......................................363
ParkSense Display .......................................................363
Enabling And Disabling Front And/Or Rear
ParkSense ......................................................................368
Service The ParkSense Park Assist System ..............368
Cleaning The ParkSense System................................369
ParkSense System Usage Precautions.......................369
 PARKSENSE ACTIVE PARK ASSIST SYSTEM — IF
EQUIPPED .........................................................................371
Enabling And Disabling The ParkSense Active Park
Assist System................................................................372
Parallel Parking Space Assistance Operation/
Display ..........................................................................373
Perpendicular Parking Space Assistance Operation/
Display ..........................................................................381
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176 GETTING TO KNOW YOUR INSTRUMENT PANEL
• Trailer Tow (show/hide)
• Audio (show/hide)
• (Stored) Messages
• Screen Setup
Current Gear
• Off (Default)
• On
Odometer
• No Decimal Point (Default)
• Decimal Point
Defaults
• Cancel
• RestoreBattery Saver On/Battery Saver Mode Message —
Electrical Load Reduction Actions — If Equipped
This vehicle is equipped with an Intelligent Battery Sensor
(IBS) to perform additional monitoring of the electrical
system and status of the vehicle battery.
In cases when the IBS detects charging system failure, or the
vehicle battery conditions are deteriorating, electrical load
reduction actions will take place to extend the driving time
and distance of the vehicle. This is done by reducing power
to or turning off non-essential electrical loads.
Load reduction is only active when the engine is running. It
will display a message if there is a risk of battery depletion to
the point where the vehicle may stall due to lack of electrical
supply, or will not restart after the current drive cycle.
When load reduction is activated, the message “Battery
Saver On Some Systems May Have Reduced Power” will
appear in the instrument cluster.
These messages indicate the vehicle battery has a low state of
charge and continues to lose electrical charge at a rate that
the charging system cannot sustain.
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GETTING TO KNOW YOUR INSTRUMENT PANEL 187
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.
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) With Mitiga -
tion” in “Safety” for further information.
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.
3
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SAFETY 201
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 condi-
tions, leaving the roadway, or striking objects or other vehi -
cles.
NOTE:
ERM is disabled anytime the ESC is in “Full Off” mode (if
equipped). Refer to “Electronic Stability Control (ESC)” in
this section for a complete explanation of the available ESC
modes. Electronic Stability Control (ESC)
The Electronic Stability Control (ESC) system enhances
directional control and stability of the vehicle under various
driving conditions. ESC corrects for oversteering or under
-
steering of the vehicle by applying the brake of the appro -
priate wheel(s) to assist in counteracting the oversteer or
understeer condition. Engine power may also be reduced to
help the vehicle maintain the desired path.
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.
• Oversteer — when the vehicle is turning more than appro -
priate for the steering wheel position.
• Understeer — when the vehicle is turning less than appro -
priate for the steering wheel position.
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
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.
4
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210 SAFETY

6. Push the “ESC Off” button located in the lower switch bankbelow the climate control four times within 20 seconds. The
“ESC Off Indicator Light” should turn on and turn off two
times.

7. Rotate the steering wheel back to center and then an addi -
tional slightly more than one-half turn to the right.
8. Turn the ignition to the OFF mode and then back to ON. If the sequence was completed properly, the “ESC Off
Indicator Light” will blink several times to confirm HSA
is disabled.
9. Repeat these steps if you want to return this feature to its previous setting.
Traction Control System (TCS)
The Traction Control System (TCS) monitors the amount of
wheel spin of each of the driven wheels. If wheel spin is
detected, the TCS may apply brake pressure to the spinning
wheel(s) and/or reduce engine power to provide enhanced
acceleration and stability. A feature of the TCS, Brake
Limited Differential (BLD), functions similar to a limited slip
differential and controls the wheel spin across a driven axle.
If one wheel on a driven axle is spinning faster than the other,
the system will apply the brake of the spinning wheel. This will allow more engine torque to be applied to the wheel that
is not spinning. BLD may remain enabled even if TCS and
ESC are in a reduced mode.
Trailer Sway Control (TSC)
Trailer Sway Control (TSC) uses sensors in the vehicle to
recognize an excessively swaying trailer and will take the
appropriate actions to attempt to stop the sway. TSC will
become active automatically once an excessively swaying
trailer is recognized.
NOTE:
TSC cannot stop all trailers from swaying. Always use
caution when towing a trailer and follow the trailer tongue
weight recommendations. Refer to “Trailer Towing” in
“Starting And Operating” for further information.
When TSC is functioning, the “ESC Activation/Malfunction
Indicator Light” will flash, the engine power may be reduced
and you may feel the brakes being applied to individual
wheels to attempt to stop the trailer from swaying. TSC is
disabled when the ESC system is in the “Partial Off” or “Full
Off” modes.
WARNING!
If TSC activates while driving, slow the vehicle down,
stop at the nearest safe location, and adjust the trailer
load to eliminate trailer sway.
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SAFETY 211
AUXILIARY DRIVING SYSTEMS
Blind Spot Monitoring (BSM) — If Equipped
The Blind Spot Monitoring (BSM) system uses two
radar-based sensors, located inside the taillights, to detect
highway licensable vehicles (automobiles, trucks, motorcy-
cles, etc.) that enter the blind spot zones from the rear/front/
side of the vehicle.
Rear Detection Zones When the vehicle is started, the BSM warning light will
momentarily illuminate in both outside rearview mirrors to
let the driver know that the system is operational. The BSM
system sensors operate when the vehicle is in any forward
gear or REVERSE and enters stand-by mode when the
vehicle is in PARK.
The BSM detection zone covers approximately one lane
width on both sides of the vehicle 12 ft (3.8 m). The zone
length starts at the outside rear view mirror and extends
approximately 10 ft (3 m) beyond the rear bumper of the
vehicle. The BSM system monitors the detection zones on
both sides of the vehicle when the vehicle speed reaches
approximately 6 mph (10 km/h) or higher and will alert the
driver of vehicles in these areas.
NOTE:
• The BSM system DOES NOT alert the driver about rapidly
approaching vehicles that are outside the detection zones.
• The Blind Spot Monitoring (BSM) system may experience drop outs (blinking on and off) of the side mirror Warning
Indicator lamps when a motorcycle or any small object
remains at the side of the vehicle for extended periods of
time (more than a couple of seconds).
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212 SAFETY
The vehicle’s taillights, where the radar sensors are located,
must remain free of snow, ice, and dirt/road contamination
so that the BSM system can function properly. Do not block
the taillights with foreign objects (bumper stickers, bicycle
racks, etc.).Radar Sensor Locations
If the system detects degraded performance due to contami -
nation or foreign objects, a message will warn you of a
blocked sensor and the warning indicators in side view
mirrors will be on. The warning indicators will remain illu-
minated until blockage clearing conditions are met. First clear the taillights around the sensors of the blockage. After
removing the blockage, the following procedure can be used
to reset the system:
• Cycle the ignition from ON to OFF and then back ON.
If the blockage message is still present after cycling the igni
-
tion and driving in traffic, check again for a blockage.
The BSM system notifies the driver of objects in the detection
zones by illuminating the BSM warning light located in the
outside mirrors, in addition to sounding an audible (chime)
alert and reducing the radio volume. Refer to “Modes Of
Operation” in this section for further information.
Warning Light Location
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216 SAFETY
For information on how Blind Spot Monitoring functions
when pulling a trailer, refer to “Trailer Merge Assist” in this
section.
Rear Cross Path (RCP)
The Rear Cross Path (RCP) feature is intended to aid the
driver when backing out of parking spaces where their
vision of oncoming vehicles may be blocked. Proceed slowly
and cautiously out of the parking space until the rear end of
the vehicle is exposed. The RCP system will then have a clear
view of the cross traffic, and if an oncoming vehicle is
detected, alert the driver.RCP Detection Zones
RCP monitors the rear detection zones on both sides of the
vehicle, for objects that are moving toward the side of the
vehicle with a minimum speed of approximately 3 mph
(5 km/h), to objects moving a maximum of approximately
20 mph (32 km/h), such as in parking lot situations.
NOTE:
In a parking lot situation, oncoming vehicles can be obscured
by vehicles parked on either side. If the sensors are blocked
by other structures or vehicles, the system will not be able to
alert the driver.
WARNING!
The Blind Spot Monitoring system is only an aid to help
detect objects in the blind spot zones. The BSM system is
not designed to detect pedestrians, bicyclists, or animals.
Even if your vehicle is equipped with the BSM system,
always check your vehicle’s mirrors, glance over your
shoulder, and use your turn signal before changing
lanes. Failure to do so can result in serious injury or
death.
2020_DT_1500_OM_US.book Page 216