2021 DODGE CHALLENGER ECO mode

262SERVICING AND MAINTENANCE
Under normal operating conditions, the catalytic
converter will not require maintenance. However, it
is important to keep the engine properly tuned to
ensure proper catalyst operation and prevent
possible catalyst damage.
NOTE:Intentional tampering with emissions control
systems can result in civil penalties being
assessed against you.
In unusual situations involving grossly
malfunctioning engine operation, a scorching odor
may suggest severe and abnormal catalyst
overheating. If this occurs, stop the vehicle, turn off
the engine and allow it to cool. Service, including a
tune-up to manufacturer's specifications, should
be obtained immediately.
To minimize the possibility of catalytic converter
damage:
Do not shut off the engine or interrupt the igni-
tion when the transmission is in gear and the
vehicle is in motion.
Do not try to start the engine by pushing or
towing the vehicle.
Do not idle the engine with any spark plug wires
disconnected or removed, such as when diag -
nostic testing, or for prolonged periods during
very rough idle or malfunctioning operating
conditions.
NOTE:The vehicle exhaust system may be equipped with
an Electronic Exhaust Valve (EEV) system, if the
exhaust system is replaced with aftermarket
products a Malfunction Indicator Lamp (MIL) will
illuminate.
COOLING SYSTEM
Coolant Checks
Check engine coolant (antifreeze) protection every
12 months (before the onset of freezing weather,
where applicable). If the engine coolant is dirty, the
system should be drained, flushed, and refilled
with fresh Organic Additive Technology (OAT)
coolant (conforming to MS.90032) by an
authorized dealer. Check the front of the radiator
for any accumulation of bugs, leaves, etc. If dirty,
clean by gently spraying water from a garden hose
vertically down the face of the condenser.
Check the coolant recovery bottle tubing for brittle
rubber, cracking, tears, cuts, and tightness of the
connection at the bottle and radiator. Inspect the
entire system for leaks. DO NOT REMOVE THE
COOLANT PRESSURE CAP WHEN THE COOLING
SYSTEM IS HOT.
Cooling System — Drain, Flush And Refill
NOTE:Some vehicles require special tools to add coolant
properly. Failure to fill these systems properly
could lead to severe internal engine damage. If any
coolant is needed to be added to the system
please contact an authorized dealer.
WARNING!
You or others can be badly burned by hot
engine coolant (antifreeze) or steam from your
radiator. If you see or hear steam coming from
under the hood, do not open the hood until the
radiator has had time to cool. Never open a
cooling system pressure cap when the radi -
ator or coolant bottle is hot.
Keep hands, tools, clothing, and jewelry away
from the radiator cooling fan when the hood is
raised. The fan starts automatically and may
start at any time, whether the engine is
running or not.
When working near the radiator cooling fan,
disconnect the fan motor lead or turn the igni -
tion to the OFF mode. The fan is temperature
controlled and can start at any time the igni -
tion is in the ON mode.

21_LA_OM_EN_USC_t.book Page 262

278SERVICING AND MAINTENANCE
Replacing Exterior Bulbs

LOW BEAM HEADLAMP, HIGH BEAM
HEADLAMP — MODELS WITH HALOGEN
HEADLAMPS — IF EQUIPPED

See below steps to replace:

1. Open the hood.

Headlamp Assembly Dust Cap Location

NOTE:Removal of the air cleaner filter housing may be
necessary prior to replacing bulbs in the headlamp
assembly on the driver side of the vehicle. 2. Remove the large dust cap from the headlamp
housing by turning it counterclockwise.
3. Turn the bulb counterclockwise, and remove.

Headlamp Location

4. Disconnect the bulb from the socket assembly and install the replacement bulb.
5. Reinstall the bulb and socket assembly into the headlamp assembly, and then turn it
clockwise. 6. Reinstall the access cap making sure it is
seated into the housing and turn cap
clockwise to engage locking lugs. Visually, you
should be unable to see the blue O-ring gasket.
The access cap should be uniformly seated
and you should not be able to pull the access
cap off without turning it counterclockwise.
LOW BEAM HEADLAMP, HIGH BEAM HEAD -
LAMP — MODELS WITH HIGH INTENSITY
DISCHARGE (HID) HEADLAMPS — IF EQUIPPED
The headlamps are a type of high voltage
discharge tube. High voltage can remain in the
circuit even with the headlamp switch off and the
key removed. Because of this, you should not
attempt to service a headlamp bulb yourself. If a
headlamp bulb fails, take your vehicle to an
authorized dealer for service.CAUTION!
Do not touch the new bulb with your fingers. Oil
contamination will severely shorten bulb life. If
the bulb comes in contact with any oily surface,
clean the bulb with rubbing alcohol.
CAUTION!
If the access cap is not installed correctly after
bulb replacement, the lamp becomes
susceptible to dust, condensation, and water
intrusion. This may ultimately lead to an
inoperative lamp. If the access cap cannot be
installed correctly, please return to an
authorized dealer for proper repair or access
cap replacement if necessary.

21_LA_OM_EN_USC_t.book Page 278

290SERVICING AND MAINTENANCE
Run Flat Tires — If Equipped
Run Flat tires allow you the capability to drive
50 miles (80 km) at 50 mph (80 km/h) after a
rapid loss of inflation pressure. This rapid loss of
inflation is referred to as the Run Flat mode. A Run
Flat mode occurs when the tire inflation pressure is
of/or below 14 psi (96 kPa). Once a Run Flat tire
reaches the Run Flat mode it has limited driving
capabilities and needs to be replaced immediately.
A Run Flat tire is not repairable. When a Run Flat
tire is changed after driving with underinflated tire
condition, please replace the TPMS sensor as it is
not designed to be reused when driven under Run
Flat mode 14 psi (96 kPa) condition.
NOTE:TPMS Sensor must be replaced after driving the
vehicle on a flat tire condition.
It is not recommended driving a vehicle loaded at
full capacity or to tow a trailer while a tire is in the
Run Flat mode.
See the Tire Pressure Monitoring System section
for more information.
Tire Spinning
When stuck in mud, sand, snow, or ice conditions,
do not spin your vehicle's wheels above 30 mph
(48 km/h) or for longer than 30 seconds
continuously without stopping.
For further information Úpage 243.
Tread Wear Indicators
Tread wear indicators are in the original equipment
tires to help you in determining when your tires
should be replaced.

Tire Tread
These indicators are molded into the bottom of the
tread grooves. They will appear as bands when the
tread depth becomes a 1/16 of an inch (1.6 mm).
When the tread is worn to the tread wear
indicators, the tire should be replaced.
Life Of Tire
The service life of a tire is dependent upon varying
factors including, but not limited to:
Driving style.
Tire pressure - Improper cold tire inflation pres
-
sures can cause uneven wear patterns to
develop across the tire tread. These abnormal
wear patterns will reduce tread life, resulting in
the need for earlier tire replacement.
Distance driven.
Performance tires, tires with a speed rating of V
or higher, and Summer tires typically have a
reduced tread life. Rotation of these tires per
the vehicle scheduled maintenance is highly
recommended.
WARNING!
Fast spinning tires can be dangerous. Forces
generated by excessive wheel speeds may
cause tire damage or failure. A tire could
explode and injure someone. Do not spin your
vehicle's wheels faster than 30 mph (48 km/h)
for more than 30 seconds continuously when
you are stuck, and do not let anyone near a
spinning wheel, no matter what the speed.
1 — Worn Tire
2 — New Tire
WARNING!
Tires and the spare tire should be replaced after
six years, regardless of the remaining tread.
Failure to follow this warning can result in
sudden tire failure. You could lose control and
have a collision resulting in serious injury or
death.

21_LA_OM_EN_USC_t.book Page 290

304TECHNICAL SPECIFICATIONS
(Continued)
DO NOT USE E-85 IN NON-FLEX FUEL
V
EHICLES
Non-Flex Fuel Vehicles (FFV) are compatible with
gasoline containing up to 15% ethanol (E-15). Use
of gasoline with higher ethanol content may void
the New Vehicle Limited Warranty.
If a Non-FFV vehicle is inadvertently fueled with
E-85 fuel, the engine will have some or all of these
symptoms:
Operate in a lean mode.
OBD II Malfunction Indicator Light on.
Poor engine performance.
Poor cold start and cold drivability.
Increased risk for fuel system component corro -
sion.
CNG AND LP FUEL SYSTEM
M
ODIFICATIONS
Modifications that allow the engine to run on
Compressed Natural Gas (CNG) or Liquid Propane
(LP) may result in damage to the engine,
emissions, and fuel system components. Problems
that result from running CNG or LP are not the
responsibility of the manufacturer and may void or
not be covered under the New Vehicle Limited
Warranty.
METHYLCYCLOPENTADIENYL
M
ANGANESE TRICARBONYL (MMT) IN
G
ASOLINE
MMT is a manganese-containing metallic additive
that is blended into some gasoline to increase
octane. Gasoline blended with MMT provides no
performance advantage beyond gasoline of the
same octane number without MMT. Gasoline
blended with MMT reduces spark plug life and
reduces emissions system performance in some
vehicles. The manufacturer recommends that
gasoline without MMT be used in your vehicle. The
MMT content of gasoline may not be indicated on
the gasoline pump; therefore, you should ask your
gasoline retailer whether the gasoline contains
MMT. MMT is prohibited in Federal and California
reformulated gasoline.
FUEL SYSTEM CAUTIONSNOTE:Intentional tampering with the emissions control
system can result in civil penalties being assessed
against you.CAUTION!
Follow these guidelines to maintain your
vehicle’s performance:
The use of leaded gasoline is prohibited by
Federal law. Using leaded gasoline can impair
engine performance and damage the emis -
sions control system.
An out-of-tune engine or certain fuel or ignition
malfunctions can cause the catalytic
converter to overheat. If you notice a pungent
burning odor or some light smoke, your engine
may be out of tune or malfunctioning and may
require immediate service. Contact an autho -
rized dealer for service assistance.
The use of fuel additives, which are now being
sold as octane enhancers, is not recom -
mended. Most of these products contain high
concentrations of methanol. Fuel system
damage or vehicle performance problems
resulting from the use of such fuels or addi -
tives is not the responsibility of the manufac-
turer and may void or not be covered under
the New Vehicle Limited Warranty.
CAUTION!

21_LA_OM_EN_USC_t.book Page 304

312
INDEX
A
About Your Brakes.................................. 82, 301ACC (Adaptive Cruise Control........................... 93Adaptive Cruise Control (ACC).......................... 93Adding Engine Coolant (Antifreeze)............... 263Adding Washing Fluid.................................... 253Additives, Fuel............................................... 303AdjustForward................................................ 29, 31Rearward.............................................. 29, 31Advance Phone Connectivity......................... 159Air Bag........................................................... 201Advance Front Air Bag............................... 201Air Bag Operation...................................... 202Air Bag Warning Light................................ 200Enhanced Accident Response......... 206, 245Event Data Recorder (EDR)....................... 245Front Air Bag............................................. 201If Deployment Occurs................................ 206Knee Impact Bolsters................................ 203Maintaining Your Air Bag System.............. 207Maintenance............................................. 207Redundant Air Bag Warning Light.............201Side Air Bags............................................. 203Transporting Pets...................................... 223
Air Bag Light.................................. 69, 200, 223
Air Cleaner, Engine (Engine Air Cleaner Filter)... 256
Air Conditioner Maintenance........................ 257Air Conditioner Refrigerant.................. 257, 258Air Conditioner System................................. 257Air Conditioning................................................ 48Air Conditioning Filter..............................52, 258Air Conditioning System................................... 48Air Conditioning, Operating Tips....................... 51Air Filter............................................... 256, 257Air PressureTires......................................................... 288AlarmArm The System................................... 20, 21Rearm The System...................................... 21Security Alarm...................................... 20, 72Alarm SystemSecurity Alarm............................................. 20All Wheel Drive (AWD)................................... 267Alterations/ModificationsVehicle........................................................... 9Android Auto........................................ 161, 162Android Auto™
b
....................................... 161Antifreeze (Engine Coolant)................. 263, 305Disposal................................................... 264
Anti-Lock Brake System (ABS)....................... 178Anti-Lock Warning Light...................................72Apple CarPlay....................................... 161, 164Apple CarPlay®
b
...................................... 163Arming SystemSecurity Alarm.............................................20Assist, Hill Start............................................. 182Audio Settings............................................... 146Audio Systems (Radio).................................. 119Auto Down Power Windows..............................56Automatic Door Locks......................................24Automatic Headlights.......................................43Automatic High Beams.....................................42Automatic Temperature Control (ATC)..............51Automatic Transmission...................................87Adding Fluid..................................... 267, 307Fluid And Filter Change............................. 267Fluid Change............................................. 267Fluid Level Check...................................... 266Fluid Type........................................ 267, 307Special Additives...................................... 266
Automatic Transmission Limp Home Mode...24, 90
AutoPark..........................................................80

21_LA_OM_EN_USC_t.book Page 312

314 Corrosion Protection
...................................... 298Cruise Control.................................................. 93Cruise Control (Speed Control)........................ 94Cruise Light.............................................. 75, 76Customer Assistance..................................... 308Customer Programmable Features................120Cybersecurity................................................. 119
D
Daytime Running Lights................................... 42Dealer Service............................................... 254Deck Lid Power Release............................................ 59Defroster, Windshield.................................... 223De-Icer, Remote Start...................................... 20Delay (Intermittent) Wipers.............................. 46Deleting A Phone........................................... 155Diagnostic System, Onboard........................... 76Dimmer SwitchHeadlight..................................................... 42DipsticksOil (Engine)................................................ 253Disabled Vehicle Towing................................ 244Disc Drive...................................................... 148Disconnecting................................................ 155DisposalAntifreeze (Engine Coolant)....................... 264Disturb........................................................... 157
Door Ajar.......................................................... 71Door Ajar Light................................................. 71Door LocksAutomatic.................................................... 24Doors............................................................... 21Drag & Drop.................................................. 138Drive Modes.................................................. 173Driver Memory Presets................................. 145Driver’s Seat Back Tilt...................................... 29DrivingThrough Flowing, Rising, Or Shallow Standing Water
................................................... 118
E
Electric Brake Control System....................... 179Anti-Lock Brake System............................ 178Electronic Roll Mitigation................. 179, 183Electric Remote Mirrors................................... 37Electrical Power Outlets................................... 54
Electronic Power Distribution Center (Fuses)... 268
Electronic Speed Control (Cruise Control)........ 94Electronic Stability Control (ESC).................. 180Electronic Throttle Control Warning Light......... 71Emergency, In Case OfFreeing Vehicle When Stuck..................... 243Jacking..................................................... 229Jump Starting......................... 238, 239, 240Towing...................................................... 244
Emission Control System Maintenance............77Engine.................................................. 251, 252Air Cleaner................................................ 256Block Heater................................................81Break-In Recommendations........................82Checking Oil Level.................................... 253Compartment.................................. 251, 252Compartment Identification...................... 251Coolant (Antifreeze).................................. 262Cooling...................................................... 262Exhaust Gas Caution................................ 225Fails To Start................................................81Flooded, Starting.........................................81Fuel Requirements................................... 302Jump Starting......................... 238, 239, 240Oil...........................................255, 305, 306Oil Filler Cap............................................. 251Oil Filter.................................................... 256Oil Selection..................................... 255, 305Oil Synthetic.............................................. 255Overheating.............................................. 241Starting.................................................78, 79
Enhanced Accident Response Feature... 206, 245
Ethanol.......................................................... 303Exhaust Gas Cautions................................... 225Exhaust System................................... 225, 261Exterior Lighting...............................................41Exterior Lights........................................ 41, 225

21_LA_OM_EN_USC_t.book Page 314

318 Materials Added To
................................... 256Pressure Warning Light............................... 71Recommendation............................ 255, 305Synthetic................................................... 255Viscosity.................................................... 305Onboard Diagnostic System............................ 76Operating Precautions..................................... 76Operator ManualOwner's Manual........................................ 311Outside Rearview Mirrors................................ 37Overheating, Engine...................................... 241
P
Paddle Shift Mode........................................... 91Paddle Shifters................................................ 91Paint Care...................................................... 298Pair (Link) Uconnect Phone To A
Mobile Phone
b
......................................... 152Parking Brake.................................................. 82ParkSense System, Rear............................... 103Passenger SeatEasy Entry................................................... 34Passing Light................................................... 43Performance.................................................... 65Performance Shift Indicator............................. 64Personalized Main Menu Bar........................ 138
Pets.............................................................. 223Phone Mode................................................. 150Pinch Protection.............................................. 57Placard, Tire And Loading Information.......... 285PowerBrakes...................................................... 301Deck Lid Release......................................... 59Distribution Center (Fuses)....................... 272Door Locks.................................................. 22Mirrors......................................................... 37Outlet (Auxiliary Electrical Outlet)................ 54Seats........................................................... 31Steering....................................................... 93Sunroof........................................................ 56Tilt/Telescoping Steering Column................ 25Windows...................................................... 56Power SeatsForward....................................................... 31Lumbar........................................................ 31Rearward..................................................... 31Power Steering Fluid..................................... 307Pregnant Women And Seat Belts.................. 197Preparation For Jacking................................ 230Presets......................................................... 145PretensionersSeat Belts................................................. 198Programmable Features............................... 120
R
Radial Ply Tires.............................................. 289Radiator Cap (Coolant Pressure Cap)............ 264RadioPresets..................................................... 145Radio Controls.............................................. 140Radio Mode................................................... 140Radio Operation................................... 140, 177Radio Remote Controls................................. 139Rain Sensitive Wiper System...........................47Rear Camera................................................. 108Rear ParkSense System................................ 103Rear Seats, Folding..........................................30Recreational Towing...................................... 117Reformulated Gasoline................................. 303Refrigerant.................................................... 258Release, Hood..................................................58Reminder, Lights On........................................43Reminder, Seat Belt...................................... 194Remote ControlStarting System...........................................17Remote Keyless Entry......................................13Arm The Alarm.............................................20Programming Additional Key Fobs...............15Unlatch The Trunk.......................................14Remote Sound System (Radio) Control......... 139

21_LA_OM_EN_USC_t.book Page 318

2021 DODGE CHALLENGER OWNER’S MANUAL
2021 DODGE CHALLENGER
mopar.com/om
U. S.
owners.mopar.ca
Canada
SECOND EDITION
21_LA_OM_EN_USC©2021 FCA US LLC. ALL RIGHTS RESERVED. TOUS DROITS RÉSERVÉS.
DODGE IS A REGISTERED TRADEMARK OF FCA US LLC OR FCA CANADA INC., USED U\
NDER LICENSE. DODGE EST UNE MARQUE DÉPOSÉE DE FCA US LLC OU FCA CANADA INC.,
UTILISÉE SOUS LE PERMIS. APP STORE IS A REGISTERED TRADEMARK OF APPLE\
INC. GOOGLE PLAY STORE IS A REGISTERED TRADEMARK OF GOOGLE.
Whether it’s providing information about specific product features, taking a tour through your vehicle’s heritage, knowing what steps to take following an accident or scheduling your next
appointment, we know you’ll find the app an important extension of your Dodge brand vehicle.

Simply download the app, select your make and model and enjoy the ride. To get this app, go directly to the App Store
® or Google Play® Store and enter the search keyword “Dodge” (U.S. residents only).
DOWNLOAD A FREE ELECTRONIC COPY OF THE MOST UP-TO-DATE OWNER’S MANUAL, UCONNECT AND WARRANTY BOOKLETS