engine DODGE CHALLENGER 2020 Repair Manual

158STARTING AND OPERATING
(Continued)
1–4 SKIP SHIFT
In Auto Drive Mode, Default, or Street Drive
Modes, there are times when you must shift the
transmission directly from FIRST gear to
FOURTH gear instead of from FIRST gear to
SECOND gear. This is to help you get the best
possible fuel economy from your vehicle. This
occurs when the engine coolant (antifreeze) is
higher than 106°F (41°C), vehicle speed is
greater than 19 mph (30 km/h) but less than
21 mph (34 km/h), and the transmission is in
FIRST gear, and the accelerator is at ¼ throttle
or less.
NOTE:
The 1 - 4 Skip Shift feature is disabled when
selecting Sport Mode, or when selecting Track
or Custom Drive Modes (SRT only). Refer to the
“Drive Mode Supplement” for further descrip-
tions of these modes.
After you shift the transmission to FOURTH gear,
you can press the clutch in and shift to another
forward gear.
DOWNSHIFTING
To maintain a safe speed and prolong brake life,
downshift to maintain a safe speed when
descending a steep grade.
AUTOMATIC TRANSMISSION — IF
EQUIPPED
WARNING!
Skipping more than one gear while
downshifting, could cause you to lose control
of your vehicle. You could have a collision.
CAUTION!
If you skip more than one gear while down -
shifting or downshift at too high an engine
speed, you could damage the engine, trans -
mission, or clutch.
Do not downshift into FIRST gear when the
vehicle is moving faster than 15 mph
(24 km/h), as you could damage the
engine and/or clutch.
WARNING!
Never use the PARK position as a substi -
tute for the parking brake. Always apply the
parking brake fully when exiting the vehicle
to guard against vehicle movement and
possible injury or damage.
Your vehicle could move and injure you and
others if it is not in PARK. Check by trying to
move the transmission gear selector out of
PARK with the brake pedal released. Make
sure the transmission is in PARK before
exiting the vehicle.
The transmission may not engage PARK if
the vehicle is moving. Always bring the
vehicle to a complete stop before shifting to
PARK, and verify that the transmission gear
position indicator solidly indicates PARK (P)
without blinking. Ensure that the vehicle is
completely stopped, and the PARK position
is properly indicated, before exiting the
vehicle.

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STARTING AND OPERATING159
(Continued)
(Continued)
NOTE:
You must press and hold the brake pedal while
shifting out of PARK.
IGNITION PARK INTERLOCK
This vehicle is equipped with an Ignition Park
Interlock which requires the transmission to be
in PARK before the ignition can be turned to the
OFF mode. This helps the driver avoid
inadvertently leaving the vehicle without placing
the transmission in PARK. This system also
locks the transmission in PARK whenever the
ignition is in the OFF mode.
NOTE:
The transmission is NOT locked in PARK when
the ignition is in the ACC mode (even though the
engine will be off). Ensure that the transmission
is in PARK, and the ignition is OFF (not in ACC
mode) before exiting the vehicle.
It is dangerous to shift out of PARK or
NEUTRAL if the engine speed is higher than
idle speed. If your foot is not firmly pressing
the brake pedal, the vehicle could accel -
erate quickly forward or in reverse. You
could lose control of the vehicle and hit
someone or something. Only shift into gear
when the engine is idling normally and your
foot is firmly pressing the brake pedal.
Unintended movement of a vehicle could
injure those in or near the vehicle. As with
all vehicles, you should never exit a vehicle
while the engine is running. Before exiting a
vehicle, always come to a complete stop,
then apply the parking brake, shift the
transmission into PARK, and turn the igni -
tion OFF. When the ignition is in the OFF
mode, the transmission is locked in PARK,
securing the vehicle against unwanted
movement.
When exiting the vehicle, always make sure
the ignition is in the OFF mode, remove the
key fob from the vehicle, and lock the
vehicle.
WARNING! (Continued)
Never leave children alone in a vehicle, or
with access to an unlocked vehicle.
Allowing children to be in a vehicle unat -
tended is dangerous for a number of
reasons. A child or others could be seriously
or fatally injured. Children should be
warned not to touch the parking brake,
brake pedal or the transmission gear
selector.
Do not leave the key fob in or near the
vehicle (or in a location accessible to chil -
dren), and do not leave the ignition in the
ACC or ON/RUN mode. A child could
operate power windows, other controls, or
move the vehicle.
CAUTION!
Shift into or out of PARK or REVERSE only
after the vehicle has come to a complete
stop.
Do not shift between PARK, REVERSE,
NEUTRAL, or DRIVE when the engine is
above idle speed.
WARNING! (Continued)
Before shifting into any gear, make sure
your foot is firmly pressing the brake pedal.
CAUTION! (Continued)
5

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160STARTING AND OPERATING
BRAKE/TRANSMISSION SHIFT
I
NTERLOCK SYSTEM
This vehicle is equipped with a Brake
Transmission Shift Interlock system (BTSI) that
holds the transmission gear selector in PARK
unless the brakes are applied. To shift the
transmission out of PARK, the engine must be
running and the brake pedal must be pressed.
The brake pedal must also be pressed to shift
from NEUTRAL into DRIVE or REVERSE when the
vehicle is stopped or moving at low speeds.
EIGHT-SPEED AUTOMATIC
T
RANSMISSION
The transmission gear range (PRNDM) is
displayed both on the gear selector and in the
instrument cluster.
To select a gear range, push the lock button on
the gear selector and move the selector
rearward or forward. To shift the transmission
out of PARK, the engine must be running and
the brake pedal must be pressed. You must
also press the brake pedal to shift from
NEUTRAL into DRIVE or REVERSE when the
vehicle is stopped or moving at low speeds.
Select the DRIVE range for normal driving. NOTE:
In the event of a mismatch between the gear
selector position and the actual transmission
gear (for example, driver selects PARK while
driving), the position indicator will blink continu
-
ously until the selector is returned to the proper
position, or the requested shift can be
completed.

Automatic Transmission Gear Selector

The electronically-controlled transmission
adapts its shift schedule based on driver inputs,
along with environmental and road conditions.
The transmission electronics are
self-calibrating; therefore, the first few shifts on
a new vehicle may be somewhat abrupt. This is
a normal condition, and precision shifts will
develop within a few hundred miles
(kilometers). Only shift from DRIVE to PARK or REVERSE
when the accelerator pedal is released and the
vehicle is stopped. Be sure to keep your foot on
the brake pedal when shifting between these
gears.
The transmission gear selector provides PARK,
REVERSE, NEUTRAL, DRIVE, and MANUAL
(AutoStick) shift positions. Manual shifts can be
made using the AutoStick shift control. Toggling
the gear selector forward (-) or rearward (+)
while in the MANUAL (AutoStick) position
(beside the DRIVE position) will manually select
the transmission gear, and will display the
current gear in the instrument cluster as M1,
M2, M3, etc. Refer to "AutoStick" in this section
for further information.
NOTE:
If the gear selector cannot be moved to the
PARK, REVERSE, or NEUTRAL position (when
pushed forward) it is probably in the MANUAL
(AutoStick, +/-) position (beside the DRIVE posi
-
tion). In MANUAL (AutoStick) mode, the trans -
mission gear is displayed in the instrument
cluster (as M1, M2, M3, etc.). Move the gear
selector to the right (into the DRIVE [D] position)
for access to PARK, REVERSE, and NEUTRAL.

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STARTING AND OPERATING161
(Continued)
(Continued)
Gear Ranges
Do not depress the accelerator pedal when
shifting from PARK or NEUTRAL into another
gear range.
NOTE:
After selecting any gear range, wait a moment
to allow the selected gear to engage before
accelerating. This is especially important when
the engine is cold.
PARK (P)
This range supplements the parking brake by
locking the transmission. The engine can be
started in this range. Never attempt to use
PARK while the vehicle is in motion. Apply the
parking brake when exiting the vehicle in this
range.
When parking on a level surface, you may shift
the transmission into PARK first, and then apply
the parking brake.
When parking on a hill, apply the parking brake
before shifting the transmission to PARK. As an
added precaution, turn the front wheels toward
the curb on a downhill grade and away from the
curb on an uphill grade. When exiting the vehicle, always:Apply the parking brake.
Shift the transmission into PARK.
Turn the ignition OFF.
Remove the key fob from the vehicle.
WARNING!
Never use the PARK position as a substi
-
tute for the parking brake. Always apply the
parking brake fully when exiting the vehicle
to guard against vehicle movement and
possible injury or damage.
Your vehicle could move and injure you and
others if it is not in PARK. Check by trying to
move the transmission gear selector out of
PARK with the brake pedal released. Make
sure the transmission is in PARK before
exiting the vehicle.
The transmission may not engage PARK if
the vehicle is moving. Always bring the
vehicle to a complete stop before shifting to
PARK, and verify that the transmission gear
position indicator solidly indicates PARK (P)
without blinking. Ensure that the vehicle is
completely stopped, and the PARK position
is properly indicated, before exiting the
vehicle.
It is dangerous to shift out of PARK or
NEUTRAL if the engine speed is higher than
idle speed. If your foot is not firmly pressing
the brake pedal, the vehicle could accel -
erate quickly forward or in reverse. You
could lose control of the vehicle and hit
someone or something. Only shift into gear
when the engine is idling normally and your
foot is firmly pressing the brake pedal.
Unintended movement of a vehicle could
injure those in or near the vehicle. As with
all vehicles, you should never exit a vehicle
while the engine is running. Before exiting a
vehicle, always come to a complete stop,
then apply the parking brake, shift the
transmission into PARK, and turn the igni -
tion OFF. When the ignition is in the OFF
mode, the transmission is locked in PARK,
securing the vehicle against unwanted
movement.
When exiting the vehicle, always make sure
the ignition is in the OFF mode, remove the
key fob from the vehicle, and lock the
vehicle.
WARNING! (Continued)
5

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162STARTING AND OPERATING
The following indicators should be used to
ensure that you have properly engaged the
transmission into the PARK position:
When shifting into PARK, push the lock
button on the gear selector and firmly move
the selector all the way forward until it stops
and is fully seated.
Look at the transmission gear position
display and verify that it indicates the PARK
position (P), and is not blinking.
With the brake pedal released, verify that the
gear selector will not move out of PARK.
REVERSE (R)
This range is for moving the vehicle backward.
Shift into REVERSE only after the vehicle has
come to a complete stop.
NEUTRAL (N)
Use this range when the vehicle is standing for
prolonged periods with the engine running.
Apply the parking brake and shift the
transmission into PARK if you must exit the
vehicle. DRIVE (D)
This range should be used for most city and
highway driving. It provides the smoothest
upshifts and downshifts, and the best fuel
economy.
Never leave children alone in a vehicle, or
with access to an unlocked vehicle.
Allowing children to be in a vehicle unat
-
tended is dangerous for a number of
reasons. A child or others could be seriously
or fatally injured. Children should be
warned not to touch the parking brake,
brake pedal or the transmission gear
selector.
Do not leave the key fob in or near the
vehicle (or in a location accessible to chil -
dren), and do not leave the ignition in the
ACC or ON/RUN mode. A child could
operate power windows, other controls, or
move the vehicle.
CAUTION!
Before moving the transmission gear
selector out of PARK, you must start the
engine, and also press the brake pedal.
Otherwise, damage to the gear selector
could result.
DO NOT race the engine when shifting from
PARK or NEUTRAL into another gear range,
as this can damage the drivetrain.
WARNING! (Continued)WARNING!
Do not coast in NEUTRAL and never turn off
the ignition to coast down a hill. These are
unsafe practices that limit your response to
changing traffic or road conditions. You might
lose control of the vehicle and have a
collision.
CAUTION!
Towing the vehicle, coasting, or driving for any
other reason with the transmission in
NEUTRAL can cause severe transmission
damage.
Refer to “Recreational Towing” in “Starting
And Operating” and “Towing A Disabled
Vehicle” in “In Case Of Emergency” for further
information.

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STARTING AND OPERATING163
The transmission automatically upshifts
through all forward gears. The DRIVE position
provides optimum driving characteristics under
all normal operating conditions.
When frequent transmission shifting occurs
(such as when operating the vehicle under
heavy loading conditions, in hilly terrain,
traveling into strong head winds, or while towing
a heavy trailer), use the AutoStick shift control
(if equipped, refer to “AutoStick” in this section
for further information) to select a lower gear.
Under these conditions, using a lower gear will
improve performance and extend transmission
life by reducing excessive shifting and heat
buildup.
During extremely cold temperatures
(-22°F [-30°C] or below), transmission
operation may be modified depending on
engine and transmission temperature as well
as vehicle speed. Normal operation will resume
once the transmission temperature has risen to
a suitable level.
MANUAL (M)
The MANUAL (M, +/-) position (beside the DRIVE
position) enables full manual control of
transmission shifting (also known as AutoStick
mode; refer to “AutoStick” in this section for further information). Toggling the gear selector
forward (-) or rearward (+) while in the MANUAL
(AutoStick) position will manually select the
transmission gear, and will display the current
gear in the instrument cluster as M1, M2, M3,
etc.
Transmission Limp Home Mode
Transmission function is monitored
electronically for abnormal conditions. If a
condition is detected that could result in
transmission damage, Transmission Limp
Home Mode is activated. In this mode, the
transmission may operate only in certain gears,
or may not shift at all. Vehicle performance may
be severely degraded and the engine may stall.
In some situations, the transmission may not
re-engage if the engine is turned off and
restarted. The Malfunction Indicator Light (MIL)
may be illuminated. A message in the
instrument cluster will inform the driver of the
more serious conditions, and indicate what
actions may be necessary.
In the event of a momentary problem, the
transmission can be reset to regain all forward
gears by performing the following steps:
NOTE:
In cases where the instrument cluster message
indicates the transmission may not re-engage
after engine shutdown, perform this procedure
only in a desired location (preferably, at an
authorized dealer).

1. Stop the vehicle.

2. Shift the transmission into PARK, if
possible. If not, shift the transmission to
NEUTRAL.
3. Push and hold the ignition switch until the engine turns off.
4. Wait approximately 30 seconds.
5. Restart the engine.
6. Shift into the desired gear range. If the problem is no longer detected, the
transmission will return to normal
operation.
NOTE:
Even if the transmission can be reset, we
recommend that you visit an authorized dealer
at your earliest possible convenience. An autho -
rized dealer has diagnostic equipment to
assess the condition of your transmission.
If the transmission cannot be reset, authorized
dealer service is required.
5

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164STARTING AND OPERATING
AutoStick
AutoStick is a driver-interactive transmission
feature providing manual shift control, giving
you more control of the vehicle. AutoStick
allows you to maximize engine braking,
eliminate undesirable upshifts and downshifts,
and improve overall vehicle performance.
This system can also provide you with more
control during passing, city driving, cold slippery
conditions, mountain driving, trailer towing, and
many other situations.
Operation
When the gear selector is in the DRIVE (D)
position, the transmission will operate
automatically, shifting between the eight
available gears. To activate AutoStick, move the
gear selector into the MANUAL (M) position
(beside the DRIVE position). The current
transmission gear will be displayed in the
instrument cluster, along with a highlighted “M”
(Manual) indication. When the gear selector is
in the MANUAL (M) position, tap the gear
selector forward (-) or tap the (-) shift paddle on
the steering wheel, (if equipped) to downshift
the transmission to the next lower gear, or tap
the lever rearward (+) or tap the (+) shift paddle
(if equipped) to command an upshift.
Shifter Paddles

NOTE:
Tapping one of the steering wheel-mounted
shift paddles (+/-) (if equipped) while the
gear selector is in DRIVE, will activate a
temporary AutoStick mode. Tapping (-) to
enter AutoStick mode will downshift the
transmission to the next lower gear, while
tapping (+) to enter AutoStick mode will
retain the current gear. The current gear will
be displayed in the instrument cluster, but
the “M” will not be highlighted. The transmis -
sion will revert back to normal operation
(if the gear selector remains in DRIVE) after a
period of time, depending on accelerator
pedal activity.
In some models, the shift paddles may be
disabled (or re-enabled, as desired) using
Drive Mode Set-Up, accessed by selecting
Performance Control or SRT Drive Modes
from the Apps menu in the Uconnect screen.
In AutoStick mode, the transmission will shift up
or down when (+/-) is manually selected by the
driver (using the gear selector, or the shift
paddles [if equipped]), unless an engine lugging
or overspeed condition would result. It will
remain in the selected gear until another
upshift or downshift is chosen, except as
described below.
In temporary AutoStick mode (gear selector
in DRIVE), the transmission will automatically
shift up when maximum engine speed is
reached. If the accelerator is fully depressed,
the transmission will downshift when
possible (based on current vehicle speed and
gear, except 6.4L models). Lack of acceler -
ator pedal activity will cause the transmission
to revert to automatic operation.
1 — (–) Shift Paddle
2 — (+) Shift Paddle

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STARTING AND OPERATING165
In temporary AutoStick mode (gear selector
in DRIVE), the transmission will automatically
shift up when maximum engine speed is
reached. If the accelerator is fully depressed,
the transmission will downshift when
possible (based on current vehicle speed and
gear, except 6.2L and 6.4L models). Lack of
accelerator pedal activity will cause the
transmission to revert to automatic opera -
tion.
If normal AutoStick mode is engaged (gear
selector in MANUAL position), manual gear
selection will be maintained until the gear
selector is returned to DRIVE, or as described
below. The transmission will not upshift auto -
matically at redline in this mode, nor will
downshifts be obtained if the accelerator
pedal is pressed to the floor.
The transmission will automatically down -
shift as the vehicle slows (to prevent engine
lugging) and will display the current gear.
The transmission will automatically down -
shift to FIRST gear when coming to a stop.
After a stop, the driver should manually
upshift (+) the transmission as the vehicle is
accelerated.
You can start out, from a stop, in FIRST or
SECOND gear. Tapping (+) (at a stop) will
allow starting in SECOND gear. Starting out in
SECOND gear can be helpful in snowy or icy
conditions.
If a requested downshift would cause the
engine to over-speed, that shift will not occur
and an indication will display.
The system will ignore attempts to upshift at
too low of a vehicle speed and an indication
will display.
Holding the (-) paddle depressed
(if equipped), or holding the gear selector in
the (-) position, will downshift the transmis-
sion to the lowest gear possible at the current
speed.
Transmission shifting will be more noticeable
when AutoStick is enabled.
The system may revert to automatic shift
mode if a fault or overheat condition is
detected. To disengage AutoStick mode, return the gear
selector to the DRIVE position, or press and hold
the (+) shift paddle (if equipped, and the gear
selector is already in DRIVE) until “D” is once
again indicated in the instrument cluster. You
can shift in or out of the AutoStick mode at any
time without taking your foot off the accelerator
pedal.
SPORT MODE — WITHOUT PERFORMANCE
CONTROL
Your vehicle is equipped with a SPORT Mode
feature. This mode is a configuration set up for
typical enthusiast driving. The engine,
transmission (when equipped with automatic
transmission), and steering systems are all set
to their SPORT settings.
WARNING!
Do not downshift for additional engine
braking on a slippery surface. The drive
wheels could lose their grip and the vehicle
could skid, causing a collision or personal
injury.
5

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166STARTING AND OPERATING
SPORT Mode will provide improved throttle
response and modified shifting for an enhanced
driving experience, as well the greatest amount
of steering feel. This mode may be activated
and deactivated by pushing the SPORT button
on the instrument panel switch bank.
NOTE:
If equipped with a manual transmission, the
1 - 4 Skip Shift Feature is disabled in SPORT
Mode.
For vehicles equipped with Drive Modes or a
“SUPER TRACK PAK” button, refer to “Drive
Mode Supplement” for further information.
FUEL SAVER TECHNOLOGY 5.7L AND 6.4L
ONLY — IF EQUIPPED
This feature offers improved fuel economy by
shutting off four of the engine's eight cylinders
during light load and cruise conditions. The
system is automatic with no driver inputs or
additional driving skills required. When the
system is active, an indication will display within
the instrument cluster “Fuel Economy” main
menu screen. NOTE:
This system may take some time to return to full
functionality after a battery disconnect.
ELECTRIC POWER STEERING
The Electric Power Steering system will give you
good vehicle response and increased ease of
maneuverability in tight spaces. The system will
vary its assist to provide light efforts while
parking and good feel while driving. If the
electric steering system experiences a fault that
prevents it from providing assist, you will still
have the ability to steer the vehicle manually.
If the Electric Power Steering warning
icon is displayed and the “SERVICE
POWER STEERING” or the “POWER
STEERING ASSIST OFF – SERVICE
SYSTEM” message is displayed within the
instrument cluster display, this indicates the
vehicle needs to be taken to the dealer for
service. Refer to “Warning Lights And Messages” in
“Getting To Know Your Instrument Panel” for
further information.
NOTE:Even if the power steering assistance is no
longer operational, it is still possible to steer
the vehicle. Under these conditions there will
be a substantial increase in steering effort,
especially at low speeds and during parking
maneuvers.
If the condition persists, see an authorized
dealer for service.
If the Steering icon is displayed and the
“POWER STEERING SYSTEM OVER TEMP”
message is displayed on the instrument cluster
screen, they indicate that extreme steering
maneuvers may have occurred which caused
an over temperature condition in the power
steering system. Once driving conditions are
safe, pull over and let the vehicle idle for a few
moments until the icon and message turn off.
SPEED CONTROL — IF EQUIPPED
When engaged, the Speed Control takes over
accelerator operations at speeds greater than
25 mph (40 km/h) or 20 mph (32 km/h), depending on engine size and axle ratio.
WARNING!
Continued operation with reduced assist
could pose a safety risk to yourself and
others. Service should be obtained as soon
as possible.

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STARTING AND OPERATING169
(Continued)
The following conditions will also deactivate the
speed control without erasing the set speed
from memory:
Vehicle parking brake is applied
Stability event occurs
Gear selector is moved out of DRIVE
Engine overspeed occurs
Clutch pedal is pressed (manual transmis -
sion only)
Pushing the on/off button or placing the ignition
in the OFF position erases the set speed from
memory.
ADAPTIVE CRUISE CONTROL (ACC) — IF
EQUIPPED
Adaptive Cruise Control (ACC) increases the
driving convenience provided by cruise control
while traveling on highways and major
roadways. However, it is not a safety system
and not designed to prevent collisions. Speed
Control function performs differently. Please
refer to the proper section within this chapter.
ACC will allow you to keep cruise control
engaged in light to moderate traffic conditions
without the constant need to reset your cruise
control. ACC utilizes a radar sensor and a forward facing
camera designed to detect a vehicle directly
ahead of you.
NOTE:
If the sensor does not detect a vehicle ahead
of you, ACC will maintain a fixed set speed.
If the ACC sensor detects a vehicle ahead,
ACC will apply limited braking or accelerate
(not to exceed the original set speed) auto
-
matically to maintain a preset following
distance, while matching the speed of the
vehicle ahead.
The Cruise Control system has two control
modes:
Adaptive Cruise Control mode for main -
taining an appropriate distance between
vehicles.
Normal (Fixed Speed) Cruise Control mode
for cruising at a constant preset speed. For
additional information, refer to “Normal
(Fixed Speed) Cruise Control Mode” in this
section. NOTE:
Normal (Fixed Speed) Cruise Control will not
react to preceding vehicles. Always be aware of
the mode selected.
You can change the mode by using the Cruise
Control buttons. The two control modes
function differently. Always confirm which mode
is selected.
WARNING!
Adaptive Cruise Control (ACC) is a conve
-
nience system. It is not a substitute for
active driver involvement. It is always the
driver’s responsibility to be attentive of
road, traffic, and weather conditions,
vehicle speed, distance to the vehicle
ahead; and, most importantly, brake opera -
tion to ensure safe operation of the vehicle
under all road conditions. Your complete
attention is always required while driving to
maintain safe control of your vehicle.
Failure to follow these warnings can result
in a collision and death or serious personal
injury.
5

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