2015 Ram 1500 radiator

Cooling System Pressure Cap
The cap must be fully tightened to prevent loss of engine
coolant (antifreeze), and to ensure that the engine coolant
(antifreeze) will return to the radiator from the coolant
expansion bottle.
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
overheated. 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.
(Continued)
WARNING!(Continued)
•Do not use a pressure cap other than the one
specified for your vehicle. Personal injury or en-
gine damage may result.
Disposal Of Used Engine Coolant
Used ethylene glycol-based engine coolant (antifreeze) is
a regulated substance requiring proper disposal. Check
with your local authorities to determine the disposal
rules for your community. To prevent ingestion by ani-
mals or children, do not store ethylene glycol-based
engine coolant (antifreeze) in open containers 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.
778 MAINTAINING YOUR VEHICLE

3. Check the coolant level on the dipstick.
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.
Checking Coolant Level — 6.4L Engine
The level of the coolant in the pressurized coolant bottle
should be between the “MIN” and “MAX” range on the
bottle when the engine is cold.
The radiator normally remains completely full, so there is
no need to remove the cap unless checking for coolant
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 addi-
tional engine coolant (antifreeze) is needed to maintain
the proper level, it should be added to the coolant bottle.
Do not overfill.
Coolant Reservoir Dipstick
780 MAINTAINING YOUR VEHICLE

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 nor-
mally a result of moisture from rain, snow, or high
humidity accumulating on the radiator and being vapor-
ized when the thermostat opens, allowing hot engine
coolant (antifreeze) to enter the radiator.
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-12106)
and distilled water for proper corrosion protection of
your engine which contains aluminum components.
•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 emis-
sions.
7
MAINTAINING YOUR VEHICLE 781

Base Quad / Premium Bi-Halogen: Low Beam
Headlamp, High Beam Headlamp, Front Park And
Turn — If Equipped
1. Open the hood.
2. Disconnect and isolate the negative battery cable.
3. Remove the six plastic push-in fasteners that secure
the upper radiator seal to the grille support and both
fender ledges.
4. Remove the two plastic push-in rivets that secure the
upper radiator seal to the radiator.
5. Remove the upper radiator seal from the vehicle.
6. Remove the two headlamp assembly attachment
screws.
7. Reach into the front wheel house ahead of the front
wheel, remove the fastener, and lift the cover over the
access hole in the front of the wheel house splash
shield. Access to the rear of the lamp can be gained
through this access hole.
Headlamp Assembly Attachment Screw Locations
810 MAINTAINING YOUR VEHICLE

CAUTION!
•Mixing of engine coolant (antifreeze) other than
specified Organic Additive Technology (OAT) en-
gine coolant (antifreeze), may result in engine
damage and may decrease corrosion protection.
Organic Additive Technology (OAT) engine cool-
ant is different and should not be mixed with
Hybrid Organic Additive Technology (HOAT) en-
gine coolant (antifreeze) or any “globally compat-
ible” 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-12106), by an
authorized dealer as soon as possible.
(Continued)
CAUTION!(Continued)
•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 (an-
tifreeze) is not recommended.
7
MAINTAINING YOUR VEHICLE 823

Cab Top Clearance Lights...................816
Camera, Rear............................210
Camper................................268
Capacities, Fluid..........................819
Caps, Filler
Oil (Engine)...........................757
Power Steering.........................577
Radiator (Coolant Pressure)................778
Carbon Monoxide Warning..................115
Cargo Light.............................176
Car Washes.............................791
Cellular Phone...........................398
Center High Mounted Stop Light..............814
Center Seat Storage Compartment.............240
Certification Label.........................646
Chart, Tire Sizing.........................598
Check Engine Light (Malfunction Indicator Light). . .289
Checking Your Vehicle For Safety..............114
Checks, Safety............................114
Child Restraint............................83
Child Restraints
Booster Seats...........................87
Child Restraints.........................83
Child Seat Installation....................101
How To Stow An Unused ALR Seat Belt........99
Infants And Child Restraints................85
Install A LATCH-compatible Child Restraint.....98
Installing Child Restraints Using The Vehicle
Seat Belt..............................100
Locating The LATCH Anchorages............95
Lower Anchors And Tethers For Children.......90
Older Children And Child Restraints..........86
Seating Positions........................89
Cigar Lighter............................232
Clean Air Gasoline........................635
Cleaning
Wheels...............................792
Climate Control..........................400
850 INDEX

Automatic............................410
Cold Weather Operation....................451
Compact Disc (CD) Maintenance..............397
Compact Spare Tire........................615
Console, Overhead........................212
Contract, Service..........................841
Coolant Pressure Cap (Radiator Cap)...........778
Cooling System...........................774
Adding Coolant (Antifreeze)...............776
Coolant Capacity.......................819
Coolant Level..........................775
Disposal of Used Coolant.................778
Drain, Flush, and Refill...................775
Inspection............................779
Points to Remember.....................781
Pressure Cap..........................778
Radiator Cap..........................778
Selection of Coolant (Antifreeze).............776
Corrosion Protection.......................790
Cupholders.............................234
Customer Assistance.......................839
Customer Programmable Features.............375
Data Recorder, Event.......................82
Daytime Running Lights....................168
Dealer Service............................754
Defroster, Rear Window.....................245
Defroster, Windshield......................116
Delay (Intermittent) Wipers..................179
Differential, Limited-Slip....................551
Dipsticks
Power Steering.........................577
Disabled Vehicle Towing....................740
Disposal
Antifreeze (Engine Coolant)................778
Door Locks
Door Locks............................37
Key Fob . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3710
INDEX 851

Personal Settings..........................324
Pets...................................113
Pets, Transporting.........................113
Pickup Box..............................251
Placard, Tire and Loading Information..........604
Power
Distribution Center (Fuses)................798
Door Locks............................39
Mirrors..............................138
Outlet (Auxiliary Electrical Outlet)...........227
Seats................................143
Sliding Rear Window....................246
Steering..............................575
Sunroof..............................224
Windows..............................46
Power Steering Fluid.......................824
Pregnant Women and Seat Belts................64
Pretensioners
Seat Belts..............................62
Programmable Electronic Features.............324
Programming Transmitters (Remote Keyless Entry). . .24
Radial Ply Tires...........................611
Radiator Cap (Coolant Pressure Cap)...........775
Radio Operation..........................398
Radio (Sound Systems).....................394
Rain Sensitive Wiper System.................180
Ramp Travel Index........................533
Rear Axle (Differential).....................784
Rear Cargo Area Utility Rails.................266
Rear ParkSense System.....................191
Rear Seat, Folding.........................153
Rear Window Features.....................245
Rear Window, Sliding......................247
Reclining Rear Seats.......................152
Recorder, Event Data.......................82
Recreational Towing.......................673
Shifting into Transfer Case Neutral (N)........676
860 INDEX