2018 DODGE CHALLENGER SRT radiator cap

CAUTION!(Continued)
in long enough without engine operation, the vehicle’s
battery will discharge sufficiently to degrade battery
life and/or prevent the engine from starting.
IF YOUR ENGINE OVERHEATS
In any of the following situations, you can reduce the
potential for overheating by taking the appropriate action.
•On the highways — slow down.
• In city traffic — while stopped, place the transmission in
NEUTRAL, but do not increase the engine idle speed
while preventing vehicle motion with the brakes.
NOTE: There are steps that you can take to slow down an
impending overheat condition:
• If your air conditioner (A/C) is on, turn it off. The A/C
system adds heat to the engine cooling system and
turning the A/C off can help remove this heat.
• You can also turn the temperature control to maximum
heat, the mode control to floor and the blower control to
high. This allows the heater core to act as a supplement 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.
306 IN CASE OF EMERGENCY

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 the engine coolant (antifreeze) protection every 12
months (before the onset of freezing weather, where appli-
cable). If the engine coolant (antifreeze) is dirty, the system
should be drained, flushed, and refilled with fresh OAT
coolant (conforming to MS.90032) by an authorized dealer. Check the front of the A/C condenser 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 and/or the supercharger
coolant recovery bottle (if equipped with the 6.2L Super-
charged engine) 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).
NOTE: If equipped with the 6.2L Supercharged engine the
intercooler must be vacuum flushed and filled. If any
coolant is needed to be added to the system please contact
an local authorized dealer.
336 SERVICING AND MAINTENANCE

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.
The cap should be inspected and cleaned if there is any
accumulation of foreign material on the sealing surfaces.
338 SERVICING AND MAINTENANCE

NOTE:Be sure you do not mix the engine coolant system
pressure cap with the intercooler system pressure cap.
These caps are not interchangeable.
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.
8
SERVICING AND MAINTENANCE 339

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.
340 SERVICING AND MAINTENANCE

Assist, Hill Start.......................... .135
Audio Systems (Radio) ...................... .387
Auto Down Power Windows ...................76
Automatic Door Locks .....................39, 40
Automatic Headlights ........................59
Automatic High Beams .......................58
Automatic Temperature Control (ATC) ............72
Automatic Transmission ..................... .221
Adding Fluid .....................343, 382, 384
Fluid And Filter Change ...................343
Fluid Change .......................... .343
Fluid Level Check .....................342, 343
Fluid Type ...................... .342, 382, 384
Special Additives ........................ .343
Automatic Transmission Limp Home Mode .....39, 226
Autostick Operation ............................. .227
Axle Fluid ........................... .382, 384
Axle Lubrication ....................... .382, 384
Back-Up ................................ .265
Battery ...............................114,322
Charging System Light .....................114
Keyless Key Fob Replacement ................21
Location .............................. .322Belts, Seat
............................... .201
Blind Spot Monitoring ...................... .138
Body Mechanism Lubrication ..................331
B-Pillar Location .......................... .350
Brake Assist System ........................ .129
Brake Control System ....................... .129
Brake Fluid ....................... .340, 382, 384
Brake System ......................... .340, 374
Fluid Check ..................... .340, 382, 384
Master Cylinder ........................ .340
Parking .............................. .213
Warning Light .......................112,374
Brake/Transmission Interlock ..................221
Brightness, Interior Lights .....................
63
Bulb Replacement ......................... .280
Bulbs, Light .......................... .203, 280
Camera, Rear ............................ .265
Capacities, Fluid .......................... .381
Caps, Filler Fuel ................................. .267
Oil (Engine) ........................ .320, 325
Power Steering ......................... .236
Radiator (Coolant Pressure) .................338
Carbon Monoxide Warning ................200, 380
12
INDEX 469

CargoVehicle Loading ......................... .268
Car Washes .............................. .369
Cellular Phone ........................... .442
Certification Label ......................... .268
Chains, Tire ............................. .365
Changing A Flat Tire ....................... .344
Chart, Tire Sizing .......................... .346
Check Engine Light (Malfunction Indicator Light). . . .124
Checking Your Vehicle For Safety ...............199
Checks, Safety ............................ .199
Child Restraint ........................... .180
Child Restraints Booster Seats ........................... .184
Child Seat Installation .....................196
How To Stow An unused ALR Seat Belt ........192
Infant And Child Restraints .................182
Lower Anchors And Tethers For Children .......186
Older Children And Child Restraints ...........183
Seating Positions ........................ .185
Clean Air Gasoline ........................ .377
Cleaning Wheels ............................... .364
Climate Control ............................67
Cold Weather Operation ......................211 Compact Disc (CD) Maintenance
................459
Compact Spare Tire ........................ .362
Contract, Service .......................... .464
Cooling Pressure Cap (Radiator Cap) ............338
Cooling System ........................... .336
Adding Coolant (Antifreeze) .................337
Coolant Level ....................... .336, 339
Cooling Capacity ........................ .381
Disposal Of Used Coolant ..................339
Drain, Flush, And Refill ....................336
Inspection ............................. .339
Points To Remember ..................... .339
Pr

essure Cap ........................... .338
Radiator Cap .......................... .338
Selection Of Coolant (Antifreeze) .......337, 381, 382
Corrosion Protection ....................... .368
Cruise Control (Speed Control) ..............237, 240
Cruise Light ............................. .121
Customer Assistance ....................... .462
Customer Programmable Features ...............389
Cybersecurity ............................ .388
Daytime Running Lights ......................58
Dealer Service ............................ .324
470 INDEX

Parking Brake............................ .213
ParkSense System, Rear ..................... .258
Passenger Seat Easy Entry ..............................45
Passing Light ..............................59
Performance .......................... .105, 411
Personalized Main Menu .....................387
Pets ................................... .199
Placard, Tire And Loading Information ...........350
Power Brakes ............................... .374
Deck Lid Release .........................81
Distribution Center (Fuses) ..................289
Door Locks ..............................35
Mirrors ................................56
Outlet (Auxiliary Electrical Outlet) .............93
Seats ..................................42
Steering .............................. .236
Sunroof ................................77
Tilt/Telescoping Steering Column ..............52
Windows ...............................75
Power Seats Forward ................................42
Lumbar ................................43
Rearward ...............................42 Power Steering Fluid
.....................382, 384
Pregnant Women And Seat Belts ................163
Pretensioners Seat Belts ............................. .163
Programmable Features ..................... .389
Radial Ply Tires ........................... .356
Radiator Cap (Coolant Pressure Cap) .............338
Radio Frequency General Information ................24, 30, 31, 39
Radio Operation .......................... .442
Rain Sensitive Wiper System ...................66
Rear Camera ............................. .265
Rear ParkSense System ..................... .258
Rear Seats, Folding ..........................46
Recreational Towing ........................ .270
Reformulated Gasoline ...................... .377
Refrigerant .............................. .328
Release, Hood ..............................
80
Reminder, Lights On .........................60
Reminder, Seat Belt ........................ .157
Remote Keyless Entry Arm The Alarm ..........................32
Panic Alarm .............................20
Programming Additional Key Fobs ..........23, 31
12
INDEX 477