2021 DODGE CHALLENGER ECU

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INTRODUCTION
SYMBOLS KEY ...........................................................9
VEHICLE MODIFICATIONS/ALTERATIONS .............9
SYMBOL GLOSSARY.............................................. 10
GETTING TO KNOW YOUR VEHICLE
KEYS ....................................................................... 13 Key Fob .............................................................13
SENTRY KEY ........................................................... 16
IGNITION SWITCH .................................................. 16
Keyless Enter ‘n Go™ Ignition .........................16
REMOTE START — IF EQUIPPED ......................... 17
How To Use Remote Start ................................18
To Exit Remote Start Mode ..............................18
Remote Start Front Defrost Activation —
If Equipped........................................................19
Remote Start Comfort Systems —
If Equipped........................................................19
Remote Start Windshield Wiper De–Icer
Activation — If Equipped ..................................20

Remote Start Cancel Message — If Equipped .. 20

VEHICLE SECURITY SYSTEM — IF EQUIPPED .... 20
To Arm The System ..........................................20
To Disarm The System .....................................20
Rearming The System ......................................21
Security System Manual Override ...................21
Tamper Alert .....................................................21 DOORS ....................................................................21
Manual Door Locks ..........................................21
Power Door Locks ...........................................22
Keyless Enter ‘n Go™ — Passive Entry............22
Automatic Unlock Doors On Exit......................24
Automatic Door Locks —
If Equipped........................................................24
STEERING WHEEL ..................................................24
Manual Tilt/Telescoping Steering Column —
If Equipped .......................................................24
Power Tilt/Telescoping Steering Column —
If Equipped .......................................................25
Heated Steering Wheel —If Equipped ............25
UCONNECT VOICE RECOGNITION ........................26
Introducing Voice Recognition.........................26
Basic Voice Commands ...................................26
Get Started .......................................................26
Additional Information .....................................27
DRIVER MEMORY SETTINGS — IF EQUIPPED ....27
Programming The Memory Feature ................28
Linking And Unlinking The Key
Fob To Memory.................................................28
Memory Position Recall ...................................28 SEATS ...................................................................... 29
Manual Adjustment (Front Seats) —
If Equipped .......................................................29
Manual Adjustment (Rear Seats).................... 30
Power Adjustment (Front Seats) —
If Equipped .......................................................31
Heated Seats — If Equipped ........................... 32
Front Ventilated Seats — If Equipped ............. 33
Vehicles Without Passenger
Seating Installed .............................................. 33
Passenger Seat Easy Entry .............................34
Head Restraints .............................................. 34
MIRRORS ............................................................... 36
Inside Rearview Mirror..................................... 36
Illuminated Vanity Mirrors .............................. 36
Outside Mirrors.................................................37
Power Mirrors ................................................... 37
Heated Mirrors — If Equipped ......................... 38
UNIVERSAL GARAGE DOOR OPENER
(HOMELINK®) ....................................................... 38

Before You Begin Programming HomeLink® ... 38

Erasing All The HomeLink® Channels ............ 38
Identifying Whether You Have A Rolling Code
Or Non-Rolling Code Device ............................ 38

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WARNING LIGHTS AND MESSAGES ................... 69 Red Warning Lights ..........................................69
Yellow Warning Lights ......................................72
Yellow Indicator Lights .....................................75
Green Indicator Lights......................................75
White Indicator Lights ......................................76
Blue Indicator Lights ........................................76
ONBOARD DIAGNOSTIC SYSTEM — OBD II ....... 76
Onboard Diagnostic System
(OBD II) Cybersecurity ......................................76
EMISSIONS INSPECTION AND MAINTENANCE
PROGRAMS ............................................................ 77
STARTING AND OPERATING
STARTING THE ENGINE ........................................ 78
Manual Transmission — If Equipped ...............78
Automatic Transmission —
If Equipped........................................................78
Normal Starting ................................................79
AutoPark ...........................................................80
Cold Weather Operation (Below –22°F
Or −30°C) ........................................................81
If Engine Fails To Start .....................................81
After Starting.....................................................81 ENGINE BLOCK HEATER — IF EQUIPPED ...........81
ENGINE BREAK-IN RECOMMENDATIONS —
3.6L & 5.7L ............................................................82
PARKING BRAKE ....................................................82
MANUAL TRANSMISSION — IF EQUIPPED ..........83
Six-Speed Manual Transmission .....................83
Shifting ..............................................................84
Recommended Shift Speeds...........................85
1–4 Skip Shift .................................................86
Downshifting.....................................................86
AUTOMATIC TRANSMISSION —
IF EQUIPPED .......................................................... 86
Ignition Park Interlock ......................................87
Brake Transmission Shift Interlock (BTSI)
System .............................................................87
Eight-Speed Automatic Transmission .............87
SPORT MODE — WITHOUT PERFORMANCE
CONTROL................................................................. 92
FUEL SAVER TECHNOLOGY 5.7L —
IF EQUIPPED ...........................................................93
ELECTRIC POWER STEERING ...............................93
CRUISE CONTROL SYSTEMS — IF EQUIPPED .....93
Cruise Control ..................................................94
Adaptive Cruise Control (ACC) .........................95 PARKSENSE REAR PARK ASSIST —
IF EQUIPPED ......................................................... 103
ParkSense Sensors ....................................... 104
ParkSense Display ........................................ 104
ParkSense Warning Display ......................... 107
Enabling And Disabling ParkSense.............. 107
Service The ParkSense Rear Park
Assist System ................................................ 107
Cleaning The ParkSense System ................. 107
ParkSense System Usage Precautions........ 107
PARKVIEW REAR BACK UP CAMERA ............... 108
REFUELING THE VEHICLE ................................... 109 Loose Fuel Filler Cap Message .................... 110
VEHICLE LOADING .............................................. 110
Vehicle Certification Label............................ 110
Gross Vehicle Weight Rating (GVWR) .......... 110
Gross Axle Weight Rating (GAWR) ............... 111
Overloading ................................................... 111
Loading ......................................................... 111

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TRAILER TOWING ............................................... 111 Common Towing Definitions ......................... 111Trailer Hitch Classification ............................ 113
Trailer Towing Weights (Maximum Trailer
Weight Ratings) ............................................. 113
Trailer And Tongue Weight ........................... 114
Towing Requirements ................................... 114Towing Tips ................................................... 116
RECREATIONAL TOWING
(BEHIND MOTORHOME) ..................................... 117
DRIVING TIPS ....................................................... 117
Driving On Slippery Surfaces ........................ 117
Driving Through Water ................................. 118
MULTIMEDIA
UCONNECT SYSTEMS ......................................... 119
CYBERSECURITY ................................................. 119
UCONNECT SETTINGS ........................................ 120Customer Programmable Features .............. 120
UCONNECT INTRODUCTION................................ 135
System Overview .......................................... 135
Drag & Drop Menu Bar ................................. 138Safety And General Information ................... 138
UCONNECT MODES ............................................. 139
Steering Wheel Audio Controls ..................... 139
Radio Mode .................................................. 140
Media Mode .................................................. 148
Phone Mode ................................................. 150 ANDROID AUTO™ & APPLE CARPLAY® —
IF EQUIPPED ........................................................ 161
Android Auto™ .............................................. 161
Apple CarPlay® ............................................. 163Android Auto™ And Apple CarPlay®
Tips And Tricks .............................................. 165
PERFORMANCE PAGES...................................... 165
Home.............................................................. 166
Timers ............................................................ 168
Gauges ........................................................... 170
G-Force........................................................... 171
Engine ............................................................ 172
Dynamometer (Dyno) .................................... 172
DODGE DRIVE MODES — IF EQUIPPED ............ 173
Performance Control — If Equipped ............. 173
RADIO OPERATION AND MOBILE PHONES ..... 177
Regulatory And Safety Information .............. 177
SAFETY
SAFETY FEATURES .............................................. 178 Anti-Lock Brake System (ABS) ..................... 178
Electronic Brake Control (EBC) System ...... 179
AUXILIARY DRIVING SYSTEMS.......................... 184
Blind Spot Monitoring (BSM) —
If Equipped..................................................... 184Forward Collision Warning (FCW) Operation —
If Equipped..................................................... 187Tire Pressure Monitoring System (TPMS) .... 189 OCCUPANT RESTRAINT SYSTEMS ................... 192
Occupant Restraint Systems Features ....... 192
Important Safety Precautions ...................... 192
Seat Belt Systems ........................................ 193
Supplemental Restraint Systems (SRS) ...... 199Child Restraints ............................................ 208
SAFETY TIPS ........................................................ 223
Transporting Passengers.............................. 223
Transporting Pets ......................................... 223
Safety Checks You Should Make Inside
The Vehicle ................................................... 223
Periodic Safety Checks You Should Make
Outside The Vehicle ...................................... 225
Exhaust Gas................................................... 225
Carbon Monoxide Warnings ......................... 225
IN CASE OF EMERGENCY
HAZARD WARNING FLASHERS ......................... 226
ASSIST AND SOS MIRROR — IF EQUIPPED...... 226
JACKING AND TIRE CHANGING ......................... 229 Preparations For Jacking .............................. 230
Jack Location/Spare Tire Stowage ............. 230
Jacking And Changing A Tire ....................... 231
TIRE SERVICE KIT — IF EQUIPPED ..................... 234
Tire Service Kit Storage ................................ 234
Tire Service Kit Components And Operation ...234

Tire Service Kit Usage Precautions .............. 235
Sealing A Tire With Tire Service Kit .............. 236

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Trunk Open Warning Light Úpage 71
Vehicle Security Warning Light Úpage 72
Yellow Warning Lights
Engine Check/Malfunction Indicator Warning Light (MIL)
Úpage 73
Electronic Stability Control (ESC) Active Warning Light Úpage 72
Electronic Stability Control (ESC) OFF Warning Light Úpage 73
Tire Pressure Monitoring System (TPMS) Warning Light Úpage 74
Anti-Lock Brake System (ABS) Warning Light Úpage 72
Red Warning Lights
Low Fuel Warning Light
Úpage 73
Service Forward Collision Warning (FCW) Light Úpage 74
Loose Fuel Filler Cap Warning Light Úpage 73
Service AWD Warning Light Úpage 74
Service Adaptive Cruise Control Warning Light Úpage 72
Yellow Indicator Lights
Forward Collision Warning OFF Indicator Light
Úpage 75
Yellow Warning Lights
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GETTING TO KNOW YOUR VEHICLE
KEYS
KEY FOB
Your vehicle is equipped with a key fob which
supports Passive Entry, Remote Keyless Entry
(RKE), Keyless Enter ‘n Go™ (if equipped), Remote
Start (if equipped), and remote trunk operation.
The key fob allows you to lock or unlock the doors
and trunk from distances up to approximately 66 ft
(20 m). The key fob does not need to be pointed at
the vehicle to activate the system. The key fob also
contains an emergency key, which is stored in the
rear of the key fob.
NOTE:
The key fob’s wireless signal may be blocked if
the key fob is located next to a mobile phone,
laptop, or other electronic device. This may
result in poor performance.
With ignition in the ON position and the vehicle
moving at 2 mph (4 km/h), all RKE commands are disabled.
Key Fob

NOTE:In case the ignition switch does not change with
the push of a button, the key fob may have a low or
fully depleted battery. A low key fob battery can be
verified by referring to the instrument cluster,
which will display directions to follow
Úpage 311.
To Lock/Unlock The Doors And Trunk
Push and release the unlock button on the key fob
once to unlock the driver's door or twice within five
seconds to unlock all doors. Push and release the
lock button on the key fob to lock all doors.

When the doors are unlocked, the turn signals will
flash and the illuminated entry system will be
activated. When the doors are locked, the turn signals
will flash and the horn will chirp. This setting can be
adjusted in the Uconnect system
Ú
page 120.

NOTE:
If the vehicle is unlocked with the key fob, and
no door is opened within 60 seconds, the
vehicle will relock and the security system will
arm (if equipped).
If one or more doors are open, or the trunk is
open, the doors will lock. The doors will unlock
again automatically if the key is left inside the
passenger compartment, otherwise the doors
will stay locked.
1 — Unlock
2 — Trunk Open
3 — Lock
4 — Remote Start (If Equipped)
5 — PANIC Button
6 — Emergency Key
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GETTING TO KNOW YOUR VEHICLE15
NOTE:Separating the case can also be done with a flat
head screwdriver.

Separating Case With A Flat Blade Screwdriver
Key Fob Battery Replacement
3. Remove the back cover to access and replace
the battery. When replacing the battery, match
the (+) sign on the battery to the (+) sign on the
inside of the battery clip, located on the back
cover. Avoid touching the new battery with your
fingers. Skin oils may cause battery deterio -
ration. If you touch a battery, clean it with
rubbing alcohol.
4. To assemble the key fob case, snap the two halves together.Programming And Requesting Additional
Key Fobs
Programming the key fob may be performed by an
authorized dealer.
NOTE:
Once a key fob is programmed to a vehicle, it
cannot be repurposed and reprogrammed to
another vehicle.
Only key fobs that are programmed to the
vehicle electronics can be used to start and
operate the vehicle.
Duplication of key fobs may be performed at an
authorized dealer. This procedure consists of
programming a blank key fob to the vehicle
electronics.
NOTE:When having the Sentry Key Immobilizer system
serviced, bring all vehicle keys with you to an
authorized dealer.
WARNING!
The integrated key fob contains a coin cell
battery. Do not ingest the battery; there is a
chemical burn hazard. If the coin cell battery is
swallowed, it can cause severe internal burns
in just two hours and can lead to death.
If you think a battery may have been swal-
lowed or placed inside any part of the body,
seek immediate medical attention.
Keep new and used batteries away from chil -
dren. If the battery compartment does not
close securely, stop using the product and
keep it away from children.
WARNING!
Always remove the key fobs from the vehicle
and lock all doors when leaving the vehicle
unattended.
For vehicles equipped with Keyless Enter ‘n
Go™ Ignition, always remember to place the
ignition in the OFF position.
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16GETTING TO KNOW YOUR VEHICLE
SENTRY KEY
The Sentry Key Immobilizer system prevents
unauthorized vehicle operation by disabling the
engine. The system does not need to be armed or
activated. Operation is automatic, regardless of
whether the vehicle is locked or unlocked.
The system uses a key fob, keyless push button
ignition and a Radio Frequency (RF) receiver to
prevent unauthorized vehicle operation. Therefore,
only key fobs that are programmed to the vehicle
can be used to start and operate the vehicle. The
system cannot reprogram a key fob obtained from
another vehicle.
After placing the ignition switch in the ON/RUN
position, the Vehicle Security Light will turn on for
three seconds for a bulb check. If the light remains
on after the bulb check, it indicates that there is a
problem with the electronics. In addition, if the light
begins to flash after the bulb check, it indicates
that someone attempted to start the engine with
an invalid key fob. In the event that a valid key fob
is used to start the engine but there is an issue
with the vehicle electronics, the engine will start
and shut off after two seconds.
If the Vehicle Security Light turns on during normal
vehicle operation (vehicle running for longer than
10 seconds), it indicates that there is a fault in the electronics. Should this occur, have the vehicle
serviced as soon as possible by an authorized
dealer.
All of the key fobs provided with your new vehicle
have been programmed to the vehicle electronics
Ú
page 311.
IGNITION SWITCH
KEYLESS ENTER ‘N GO™ IGNITION
This feature allows the driver to operate the
ignition switch with the push of a button as long as
the key fob is in the passenger compartment.
The START/STOP ignition button has four
operating positions, three of which are labeled and
will illuminate when in position. The three positions
are OFF, ACC, and ON/RUN. The fourth position is
START. During START, RUN will illuminate.
START/STOP Ignition Button

The push button ignition can be placed in the
following modes:
OFF The engine is stopped.
Some electrical devices (e.g. power locks,
alarm, etc.) are still available.
ACC
Engine is not started.
Some electrical devices are available (e.g.
power windows, etc.)
CAUTION!
The Sentry Key Immobilizer system is not
compatible with some aftermarket Remote Start
systems. Use of these systems may result in
vehicle starting problems and loss of security
protection.
1 — OFF
2 — ACC
3 — ON/RUN

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GETTING TO KNOW YOUR VEHICLE17
ON/RUN
Driving position.
All the electrical devices are available (e.g.
climate controls, etc.)
START
The engine will start.
NOTE:If the ignition switch does not change with the push
of a button, the key fob may have a low or depleted
battery. In this situation, a back up method can be
used to operate the ignition switch. Put the nose
side (side opposite of the emergency key) of the
key fob against the START/STOP ignition button
and push to operate the ignition switch.

Depleted Key Fob Battery Procedure

NOTE:
When opening the driver's door with the ignition
in ON/RUN (engine not running), a chime will
sound to remind you to place the ignition in the
OFF position. In addition to the chime, the
message will display “Ignition Or Accessory On”
in the cluster.
For more information on proper engine starting
procedures, see Ú page 78.
REMOTE START — IF EQUIPPED
This system uses the key fob to start the
engine conveniently from outside the
vehicle while still maintaining security.
The system has a range of 328 ft
(100 m).
Remote Start is used to defrost windows in cold
weather, and to reach a comfortable climate in all
ambient conditions before the driver enters the
vehicle.
NOTE:Obstructions between the vehicle and key fob may
reduce this range Ú page 311.
WARNING!
When exiting the vehicle, always remove the
key fob from the vehicle and lock your vehicle.
Never leave children alone in a vehicle, or with
access to an unlocked vehicle.
Allowing children to be in a vehicle unattended
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 gear
selector.
Do not leave the key fob in or near the vehicle,
or in a location accessible to children, and do
not leave the ignition of a vehicle equipped
with Keyless Enter ‘n Go™ in the ON/RUN
position. A child could operate power
windows, other controls, or move the vehicle.
Do not leave children or animals inside parked
vehicles in hot weather. Interior heat buildup
may cause serious injury or death.
CAUTION!
An unlocked vehicle is an invitation for thieves.
Always remove key fob from the vehicle and lock
all doors when leaving the vehicle unattended.
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