2021 DODGE CHALLENGER radiator

SERVICING AND MAINTENANCE265
(Continued)
Make sure that the coolant expansion bottle
overflow hoses are not kinked or obstructed.
Keep the front of the radiator clean. If your
vehicle is equipped with air conditioning, keep
the front of the condenser clean.
Do not change the thermostat for Summer or
Winter operation. If replacement is ever neces -
sary, install ONLY the correct type thermostat.
Other designs may result in unsatisfactory
engine cooling performance, poor gas mileage,
and increased emissions.
BRAKE SYSTEM
In order to ensure brake system performance, all
brake system components should be inspected
periodically Ú page 247.
Fluid Level Check — Brake Master Cylinder
Check the fluid level in the master cylinder
immediately if the Brake System Warning Light
indicates system failure.
Check the fluid level in the master cylinder when
performing underhood services.
Clean the top of the master cylinder area before
removing the cap. Add fluid to bring the level up to
the top of the “FULL” mark on the side of the
master cylinder reservoir.
Overfilling of fluid is not recommended because it
may cause leaking in the system.
Add enough fluid to bring the level up to the
requirements described on the brake fluid
reservoir. With disc brakes, fluid level can be
expected to fall as the brake pads wear. However,
low fluid level may be caused by a leak and a
checkup may be needed.
Use only brake fluid that has been recommended
by the manufacturer, and has been kept in a tightly
closed container to avoid contamination from
foreign matter or moisture Ú page 306.
WARNING!
Riding the brakes can lead to brake failure and
possibly a collision. Driving with your foot resting
or riding on the brake pedal can result in
abnormally high brake temperatures, excessive
lining wear, and possible brake damage. You
would not have your full braking capacity in an
emergency.
WARNING!
Use only manufacturer's recommended brake
fluid Úpage 306. Using the wrong type of
brake fluid can severely damage your brake
system and/or impair its performance. The
proper type of brake fluid for your vehicle is
also identified on the original factory installed
hydraulic master cylinder reservoir.
To avoid contamination from foreign matter or
moisture, use only new brake fluid or fluid that
has been in a tightly closed container. Keep
the master cylinder reservoir cap secured at
all times. Brake fluid in a open container
absorbs moisture from the air resulting in a
lower boiling point. This may cause it to boil
unexpectedly during hard or prolonged
braking, resulting in sudden brake failure. This
could result in a collision.
Overfilling the brake fluid reservoir can result
in spilling brake fluid on hot engine parts,
causing the brake fluid to catch fire. Brake
fluid can also damage painted and vinyl
surfaces, care should be taken to avoid its
contact with these surfaces.8

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SERVICING AND MAINTENANCE269
CavityCartridge Fuse Mini-FuseDescription
* If Equipped
F01 ––Spare
F02 40 Amp Green –Radiator Fan #1 – (Non 6.2L
Supercharged)
F03 50 Amp Red –Electric Power Steering #1*
F04 30 Amp Pink –Starter
F05 40 Amp Green –Anti Lock Brake
F06 30 Amp Pink –Anti Lock Brake
F07 20 Amp Blue –Police Ignition Run / ACC #1
F08 20 Amp Blue –Police Ignition Run / ACC # 2
F09 –20 Amp YellowAll-Wheel Drive Module*
F10 –10 Amp RedIntrusion MOD (300)*/ Under Hood
Lamp – Police
F11 –20 Amp YellowHorns
F12 –10 Amp RedAir Conditioning Clutch
F13 ––Spare
F14 ––Spare
F15 –20 Amp YellowLeft HID Headlamp*
F16 –20 Amp YellowRight HID Headlamp*
F18 50 Amp Red –Radiator Fan – (Non 6.2L
Supercharged)
F19 50 Amp Red –Electric Power Steering #2*
8

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270SERVICING AND MAINTENANCE
F20 30 Amp Pink –Wiper Motor
F21 30 Amp Pink
–Headlamp Washers*
20 Amp Blue – Police Police Bat Feed #2
F22 40 Amp Green
–Engine Cooling Pump
(6.2L Supercharged)
20 Amp Blue – Police Police Bat Feed # 3
F23 20 Amp Blue –Police Bat Feed # 1
F24 50 Amp Red
–Radiator Fan (6.2L Supercharged)
20 Amp Blue Police Ignition Run/ACC Feed # 3
F28 ––Spare
F29 –15 Amp BlueAuto Trans (Challenger / Charger
Police)
F30 ––Spare
F31 –25 Amp ClearEngine Module
F32 ––Spare
F33 ––Spare
F34 –25 Amp ClearASD Feed #1
Cavity Cartridge Fuse Mini-FuseDescription
* If Equipped

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306TECHNICAL SPECIFICATIONS
ENGINE FLUIDS AND LUBRICANTS
Component Fluid, Lubricant, or Genuine Part
Engine Coolant We recommend you use Mopar® Antifreeze/Coolant 10 Year/150,000 Mile
(240,000 km) Formula OAT (Organic Additive Technology).
Engine Oil – 3.6L/5.7L Engine We recommend you use API Certified SAE 5W-20 Engine Oil, meeting the
requirements of the manufacturer Material Standard MS-6395 such as
Mopar® SAE 5W-20, Pennzoil SAE 5W-20, and Pennzoil gold 5W-20
semi-synthetic oil. Refer to your engine oil filler cap for correct SAE grade.
Engine Oil Filter We recommend you use a Mopar® Engine Oil Filter. If a Mopar® Engine Oil
Filter is unavailable only use filters that meet or exceed SAE/USCAR-36 Filter
Performance Requirements.
Fuel Selection – 3.6L Engine 87 Octane (R+M)/2 Method, 0-15% ethanol.
Fuel Selection – 5.7L Engine With Automatic Transmission
89 Octane recommended – 87 Octane acceptable (R+M)/2 Method, 0-15% ethanol.

Fuel Selection – 5.7L Engine With Manual Transmission 91 Octane or higher (R+M)/2 Method, 0-15% ethanol.
CAUTION!
Mixing of engine coolant (antifreeze) other than specified Organic Additive Technology (OAT) engine coolant (antifreeze), may result in engine damage and
may decrease corrosion protection. Organic Additive Technology (OAT) engine coolant is different and should not be mixed with Hybrid Organic Additive Tech -
nology (HOAT) engine coolant (antifreeze) or any “globally compatible” coolant (antifreeze). If a non-OAT engine coolant (antifreeze) is introduced into the
cooling system in an emergency, the cooling system will need to be drained, flushed, and refilled with fresh OAT coolant (conforming to MS.90032), by an
authorized dealer as soon as possible.
Do not use water alone or alcohol-based engine coolant (antifreeze) products. Do not use additional rust inhibitors or antirust products, as they may not be
compatible with the radiator engine coolant and may plug the radiator.
This vehicle has not been designed for use with propylene glycol-based engine coolant (antifreeze). Use of propylene glycol-based engine coolant (antifreeze)
is not recommended.

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313
Autostick Operation
.................................................... 91Axle Fluid....................................................... 307Axle Lubrication............................................. 307
B
Back-Up......................................................... 108Battery.................................................... 70, 254Charging System Light................................. 70Keyless Key Fob Replacement.................... 14Location.................................................... 254Belts, Seat..................................................... 223Blind Spot Monitoring.................................... 184BluetoothConnecting To A Particular Mobile Phone Or Audio Device After Pairing
................154Body Mechanism Lubrication........................ 260B-Pillar Location............................................. 285Brake Assist System...................................... 179Brake Control System.................................... 179Brake Fluid.......................................... 265, 307Brake System...................................... 265, 301Fluid Check..................................... 265, 307Master Cylinder......................................... 265Parking........................................................ 82Warning Light..................................... 70, 301
Brake/Transmission Interlock......................... 87Break-In Recommendations, New Vehicle....... 82Brightness, Interior Lights................................ 45Bulb Replacement........................................ 276Bulbs, Light.......................................... 225, 276
C
Camera, Rear................................................ 108Capacities, Fluid........................................... 305Caps, FillerFuel.......................................................... 109Oil (Engine)............................................... 251Radiator (Coolant Pressure)..................... 264Car Washes................................................... 298Carbon Monoxide Warning............................ 225CargoVehicle Loading........................................ 110CD................................................................. 148Cellular Phone.............................................. 177Certification Label......................................... 110Chains, Tire................................................... 295Chart, Tire Sizing........................................... 281Check Engine Light
(Malfunction Indicator Light)............................ 77Checking Your Vehicle For Safety................. 223Checks, Safety.............................................. 223Child Restraint.............................................. 208
Child RestraintsBooster Seats........................................... 211Child Seat Installation............................... 221How To Stow An unused ALR Seat Belt..... 217Infant And Child Restraints....................... 210Lower Anchors And Tethers For Children.. 213Older Children And Child Restraints.......... 210Seating Positions...................................... 212Clean Air Gasoline......................................... 303CleaningWheels...................................................... 294Climate Control................................................48Cold Weather Operation...................................81Compact Spare Tire...................................... 292Contract, Service........................................... 309Controls........................................................ 140Cooling Pressure Cap (Radiator Cap)............ 264Cooling System............................................. 262Adding Coolant (Antifreeze)...................... 263Coolant Level................................... 262, 264Cooling Capacity....................................... 305Disposal Of Used Coolant......................... 264Drain, Flush, And Refill............................. 262Inspection................................................. 264Points To Remember................................ 264Pressure Cap............................................ 264Radiator Cap............................................. 264Selection Of Coolant (Antifreeze)......................... 263, 305, 306
11

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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

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