2018 DODGE CHALLENGER radiator cap

to the radiator and aids in removing heat from the
engine cooling system.
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 try to open a cooling system pressure cap when
the radiator or coolant bottle is hot.
CAUTION!
Driving with a hot cooling system could damage your
vehicle. If the temperature gauge reads HOT (H), pull
over and stop the vehicle. Idle the vehicle with the air
conditioner turned off until the pointer drops back
into the normal range. If the pointer remains on HOT
(H), and you hear continuous chimes, turn the engine
off immediately and call for service.
MANUAL PARK RELEASE — 8 SPEED
TRANSMISSION
WARNING!
Always secure your vehicle by fully applying the
parking brake before activating the Manual Park Re-
lease. In addition, you should be seated in the driver’s
seat with your foot firmly on the brake pedal when
activating the Manual Park Release. Activating the
Manual Park Release will allow your vehicle to roll
away if it is not secured by the parking brake, or by
proper connection to a tow vehicle. Activating the
Manual Park Release on an unsecured vehicle could
lead to serious injury or death for those in or around
the vehicle.
In order to move the vehicle in cases where the transmis-
sion will not shift out of PARK (such as a dead battery), a
Manual Park Release is available.
7
IN CASE OF EMERGENCY 309

Cooling System
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 radiator 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, discon-
nect the fan motor lead or turn the ignition to the
OFF mode. The fan is temperature controlled and can
start at any time the ignition is in the ON mode.
Coolant Checks
Check engine coolant (antifreeze) protection every
12 months (before the onset of freezing weather, where
applicable). If coolant is dirty or rusty in appearance, the
system should be drained, flushed, and refilled with fresh coolant. Check the front of the radiator for any accumula-
tion 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.
If the engine coolant (antifreeze) is dirty or contains visible
sediment, have an authorized dealer clean and flush with
OAT coolant (antifreeze) (conforming to MS.90032).
Refer to the “Maintenance Plan” in this section for the
proper maintenance intervals.
8
SERVICING AND MAINTENANCE 349

Please review these recommendations for using Organic
Additive Technology (OAT) engine coolant (antifreeze)
that meets the requirements of FCA Material Standard
MS.90032. When adding engine coolant (antifreeze):
•We recommend using Mopar Antifreeze/Coolant 10
Year/150,000 Mile (240,000 km) Formula OAT (Organic
Additive Technology) that meets the requirements of
FCA Material Standard MS.90032.
• Mix a minimum solution of 50% OAT engine coolant
that meets the requirements of FCA Material Standard
MS.90032 and distilled water. Use higher concentrations
(not to exceed 70%) if temperatures below 34°F (37°C)
are anticipated. Please contact an authorized dealer for
assistance.
• Use only high purity water such as distilled or deionized
water when mixing the water/engine coolant (anti-
freeze) solution. The use of lower quality water will
reduce the amount of corrosion protection in the engine
cooling system. NOTE:
•
It is the owner’s responsibility to maintain the proper
level of protection against freezing according to the
temperatures occurring in the area where the vehicle is
operated.
• Some vehicles require special tools to add coolant prop-
erly. 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 a local autho-
rized dealer.
• Mixing engine coolant (antifreeze) types is not recom-
mended and can result in cooling system damage. If
HOAT and OAT coolant are mixed in an emergency,
have a authorized dealer drain, flush, and refill with
OAT coolant (conforming to MS.90032) as soon as pos-
sible.
Cooling System Pressure Cap
The cap must be fully tightened to prevent loss of engine
coolant (antifreeze), and to ensure that engine coolant
(antifreeze) will return to the radiator from the coolant
expansion bottle/recovery tank if so equipped.
8
SERVICING AND MAINTENANCE 351

The cap should be inspected and cleaned if there is any
accumulation of foreign material on the sealing surfaces.
WARNING!
•Do not open hot engine cooling system. Never add
engine coolant (antifreeze) when the engine is over-
heated. Do not loosen or remove the cap to cool an
overheated engine. Heat causes pressure to build up
in the cooling system. To prevent scalding or injury,
do not remove the pressure cap while the system is
hot or under pressure.
• Do not use a pressure cap other than the one speci-
fied for your vehicle. Personal injury or engine
damage may result.
Disposal Of Used Coolant
Used ethylene glycol-based coolant (antifreeze) is a regu-
lated substance requiring proper disposal. Check with your
local authorities to determine the disposal rules for your
community. To prevent ingestion by animals or children,
do not store ethylene glycol-based coolant in open contain-
ers or allow it to remain in puddles on the ground. If
ingested by a child or pet, seek emergency assistance
immediately. Clean up any ground spills immediately.
Coolant Level
The coolant bottle provides a quick visual method for
determining that the engine coolant (antifreeze) level is
adequate. With the engine OFF and cold, the level of the
engine coolant (antifreeze) in the bottle should be between
the ranges indicated on the bottle.
The radiator normally remains completely full, so there is
no need to remove the radiator cap unless checking for
engine coolant (antifreeze) freeze point or replacing engine
coolant (antifreeze). Advise your service attendant of this.
As long as the engine operating temperature is satisfactory,
the coolant bottle need only be checked once a month.
When additional engine coolant (antifreeze) is needed to
maintain the proper level, it should be added to the coolant
bottle. Do not overfill.
Points To Remember
NOTE: When the vehicle is stopped after a few miles/
kilometers of operation, you may observe vapor coming
from the front of the engine compartment. This is normally
a result of moisture from rain, snow, or high humidity
accumulating on the radiator and being vaporized when
the thermostat opens, allowing hot engine coolant (anti-
freeze) to enter the radiator.
352 SERVICING AND MAINTENANCE

If an examination of your engine compartment shows no
evidence of radiator or hose leaks, the vehicle may be
safely driven. The vapor will soon dissipate.
•Do not overfill the coolant expansion bottle.
• Check the coolant freeze point in the radiator and in the
coolant expansion bottle. If engine coolant (antifreeze)
needs to be added, the contents of the coolant expansion
bottle must also be protected against freezing.
• If frequent engine coolant (antifreeze) additions are
required, the cooling system should be pressure tested
for leaks.
• Maintain engine coolant (antifreeze) concentration at a
minimum of 50% OAT coolant (conforming to
MS.90032) and distilled water for proper corrosion pro-
tection of your engine which contains aluminum com-
ponents.
• 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 necessary, install ONLY the correct type thermostat. Other designs may result in
unsatisfactory engine coolant (antifreeze) performance,
poor gas mileage, and increased emissions.
Brake System
In order to assure brake system performance, all brake
system components should be inspected periodically. Refer
to the “Maintenance Plan” in this section for the proper
maintenance intervals.
WARNING!
Riding the brakes can lead to brake failure and possi-
bly 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.
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 perform-
ing underhood services.
8
SERVICING AND MAINTENANCE 353

Caps, FillerFuel ................................. .250
Oil (Engine) ........................ .329, 337
Radiator (Coolant Pressure) .................351
Carbon Monoxide Warning ................188, 396
Cargo Vehicle Loading ......................... .251
Car Washes .............................. .383
Cellular Phone ........................... .469
Certification Label ......................... .251
Chains, Tire ............................. .379
Changing A Flat Tire ....................... .358
Chart, Tire Sizing .......................... .360
Check Engine Light (Malfunction Indicator Light) ....119
Checking Your Vehicle For Safety ...............187
Checks, Safety ............................ .187
Child Restraint ........................... .171
Child Restraints Booster Seats ........................... .175
Child Seat Installation .....................184
How To Stow An unused ALR Seat Belt ........181
Infant And Child Restraints .................173
Lower Anchors And Tethers For Children .......177
Older Children And Child Restraints ...........174
Seating Positions ........................ .176Clean Air Gasoline
........................ .393
Cleaning Wheels ............................... .378
Climate Control ............................64
Cold Weather Operation ..................... .199
Compact Disc (CD) Maintenance ................489
Compact Spare Tire ........................ .376
Contract, Service .......................... .494
Cooling Pressure Cap (Radiator Cap) ............351
Cooling System ........................... .349
Adding Coolant (Antifreeze) .................350
Coolant Level ....................... .349, 352
Cooling Capacity ........................ .396
Disposal
Of Used Coolant ..................352
Drain, Flush, And Refill ....................349
Inspection ............................. .352
Points To Remember ..................... .352
Pressure Cap ........................... .351
Radiator Cap .......................... .351
Selection Of Coolant (Antifreeze) .......350, 396, 398
Corrosion Protection ....................... .382
Cruise Control (Speed Control) ..............219, 222
Cruise Light ..............................117
Customer Assistance ....................... .492
Customer Programmable Features ...............405
500 INDEX

Overheating, Engine....................... .308
Owner’s Manual (Operator Manual) ...........4,496
Paddle Shifters ........................... .215
Paddle Shift Mode ......................... .215
Paint Care ............................... .382
Panic Alarm ...............................19
Parking Brake ............................ .202
ParkSense System, Rear ..................... .241
Passenger Seat Easy Entry ..............................44
Passing Light ..............................55
Performance ............................. .448
Personalized Main Menu .....................403
Pets ................................... .187
Placard, Tire And Loading Information ...........364
Power Brakes ............................... .389
Deck Lid Release .........................79
Distribution Center (Fuses) ..................284
Door Locks ..............................34
Mirrors ................................52
Outlet (Auxiliary Electrical Outlet) .............91
Seats ..................................41
Steering .............................. .218Sunroof
................................75
Tilt/Telescoping Steering Column ..............49
Windows ...............................73
Power Seats Forward ................................41
Lumbar ................................41
Rearward ...............................41
Power Steering Fluid .....................398, 400
Pregnant Women And Seat Belts ................155
Preparation For Jacking ..................... .292
Pretensioners Seat Belts ............................. .156
Programmable Features ..................... .405
Radial Ply Tires ........................... .370
Radiator Cap (Coolant Pressure Cap) .............351
Radio Frequency General Information ................23, 29, 30, 38
Radio Operation .......................... .469
Rain Sensitive Wiper System ...................
63
Rear Camera ............................. .248
Rear ParkSense System ..................... .241
Rear Seats, Folding ..........................45
Recreational Towing ........................ .262
Reformulated Gasoline ...................... .39312
INDEX 507