2012 Ram 5500 Chassis Cab radiator cap

Preparations For Jump-Start
The battery in your vehicle is located in the front of the
engine compartment, behind the left headlight assembly.
NOTE:The positive battery post is covered with a
protective cap. Lift up on the cap to gain access to the
positive battery post.WARNING!
•Take care to avoid the radiator cooling fan when-
ever the hood is raised. It can start anytime the
ignition switch is on. You can be injured by
moving fan blades.
•Remove any metal jewelry such as watch bands or
bracelets that might make an inadvertent electrical
contact. You could be seriously injured.
•Batteries contain sulfuric acid that can burn your
skin or eyes and generate hydrogen gas which is
flammable and explosive. Keep open flames or
sparks away from the battery.
1. Set the parking brake, shift the automatic transmission
into PARK and turn the ignition to LOCK.
2. Turn off the heater, radio, and all unnecessary electri-
cal accessories.
Positive Battery Post
6
WHAT TO DO IN EMERGENCIES 393

To minimize the possibility of catalytic converter dam-
age:
•Do not shut off the engine or interrupt the ignition,
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 diagnostic
testing, or for prolonged periods during very rough
idle or malfunctioning operating conditions.
Cooling System
WARNING!
You or others can be badly burned by hot coolant 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
is hot.
Engine Coolant Checks
Check the engine coolant (antifreeze) protection every
12 months (before the onset of freezing weather, where
applicable). If the engine coolant (antifreeze) is dirty or
rusty in appearance, the system should be drained,
flushed and refilled with fresh coolant. Check the front of
the A/C condenser 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.
7
MAINTAINING YOUR VEHICLE 421

Check the coolant recovery bottle tubing for brittle rub-
ber, cracking, tears, cuts and tightness of the connection
at the bottle and radiator. Inspect the entire system for
leaks.
With the engine at normal operating temperature (but
not running), check the cooling system pressure cap for
proper vacuum sealing by draining a small amount of
engine coolant (antifreeze) from the radiator drain cock.
If the cap is sealing properly, the engine coolant (anti-
freeze) will begin to drain from the coolant recovery
bottle. DO NOT REMOVE THE COOLANT PRESSURE
CAP WHEN THE COOLING SYSTEM IS HOT.
Cooling System – Drain, Flush, And Refill
If the engine coolant (antifreeze) is dirty or contains a
considerable amount of sediment, clean and flush with a
reliable cooling system cleaner. Follow with a thorough
rinsing to remove all deposits and chemicals. Properly
dispose of old engine coolant (antifreeze) solution.Refer to the “Maintenance Schedule” for the proper
maintenance intervals.
Selection Of Coolant
Use only the manufacturer’s recommended engine cool-
ant (antifreeze). Refer to “Fluids, Lubricants, and Genu-
ine Parts” in “Maintaining Your Vehicle” for further
information.
CAUTION!
•Mixing of engine coolant (antifreeze) other than
specified HOAT engine coolant (antifreeze), may
result in engine damage and may decrease corro-
sion protection. If a non-HOAT engine coolant
(antifreeze) is introduced into the cooling system
in an emergency, it should be replaced with the
specified engine coolant (antifreeze) as soon as
possible.
(Continued)
422 MAINTAINING YOUR VEHICLE

Please note that it is the owner’s responsibility to main-
tain the proper level of protection against freezing ac-
cording to the temperatures occurring in the area where
the vehicle is operated.
NOTE:Mixing engine coolant (antifreeze) types will
decrease the life of the engine coolant (antifreeze) and
will require more frequent coolant changes.
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
recovery bottle.
The cap should be inspected and cleaned if there is any
accumulation of foreign material on the sealing surfaces.
WARNING!
•The warning words “DO NOT OPEN HOT” on
the cooling system pressure cap are a safety pre-
caution. 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.
•Do not use a pressure cap other than the one
specified for your vehicle. Personal injury or en-
gine damage may result.
424 MAINTAINING YOUR VEHICLE

2. Lift and remove the plastic dipstick from the reservoir
neck.
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 en-
gine coolant (antifreeze). Advise your service attendantof 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 (a
few 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 vapor-
ized when the thermostat opens, allowing hot coolant 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.
426 MAINTAINING YOUR VEHICLE

Automatic Transmission
Adding Fluid....................... 433
Fluid and Filter Changes............... 434
Fluid Level Check.................432,433
FluidType ......................432,455
Shifting ........................... 284
Special Additives..................... 432
AxleFluid .......................430,431,455
Axle Lubrication (Axle Fluid)............430,431
B-Pillar Location........................ 320
Battery............................... 414
Keyless Transmitter Replacement (RKE)..... 25
Saving Feature (Protection).............. 152
Belts, Seat............................ 40,80
Body Builders Guide....................... 6
Body Mechanism Lubrication............... 417
Brake Fluid.........................428,455Brake System........................312,427
Anti-Lock (ABS)..................... 313
Fluid Check........................ 428
Master Cylinder..................... 428
Parking........................... 310
Warning Light....................... 198
Brake/Transmission Interlock............... 284
Bulb Replacement....................... 447
Bulbs,Light .......................... 82,446
Cab Top Clearance Lights.................. 451
Calibration, Compass..................... 216
Capacities, Antifreeze (Engine Coolant)........ 453
Capacities, Fluid........................ 453
Caps, Filler
Oil (Engine)........................ 412
Power Steering...................... 309
Radiator (Coolant Pressure)............. 424
Car Washes............................ 435
10
INDEX 487

Carbon Monoxide Warning............... 79,345
CargoLight ............................ 152
Cellular Phone........................ 93,262
Center High Mounted Stop Light............ 449
Center Lap Belts......................... 49
Center Seat Storage Compartment............ 176
Certification Label....................... 347
Chart, Tire Sizing........................ 316
Check Engine Light
(Malfunction Indicator Light).............200,407
Checking Your Vehicle For Safety............. 78
Checks, Safety........................... 78
Child Restraint.......................... 65
Child Restraint Tether Anchors............. 69,74
Child Seat............................ 65,71
Cigar Lighter........................... 169
Cleaning
Wheels............................ 437
Climate Control......................... 262Clock .............................225,234
Cold Weather Operation................... 280
Compact Disc (CD) Maintenance............. 262
Compact Spare Tire...................... 331
Compass.............................. 215
Compass Calibration..................... 216
Compass Variance....................... 217
Computer, Trip/Travel.................... 213
Connector
UCI .............................. 249
Universal Consumer Interface (UCI)....... 249
Console, Overhead....................... 163
Contract, Service........................ 479
Coolant Pressure Cap (Radiator Cap).......... 424
Cooling System......................... 421
Adding Coolant (Antifreeze)............. 423
Coolant Capacity..................... 453
Coolant Level....................421,425
Disposal of Used Coolant............... 425
488 INDEX

Drain, Flush, and Refill................ 422
Inspection.......................... 425
Points to Remember.................. 426
Pressure Cap........................ 424
Radiator Cap....................... 424
Selection of Coolant (Antifreeze).......422,454
Cupholders............................ 172
Customer Assistance..................... 477
Data Recorder, Event...................... 64
Daytime Running Lights................... 153
Dealer Service.......................... 409
Defroster, Rear Window................... 180
Defroster, Windshield................ 80,265,271
Delay (Intermittent) Wipers................. 155
Differential, Limited-Slip.................. 304
Dipsticks
Automatic Transmission................ 433
Power Steering...................... 309Disabled Vehicle Towing................... 399
Disposal
Antifreeze (Engine Coolant)............. 425
Door Locks............................. 29
Door Locks, Automatic.................... 31
Driving
Through Flowing, Rising, or Shallow
Standing Water...................... 306
Dual Rear Wheels.....................340,388
Electric Rear Window Defrost............... 180
Electrical Power Outlets................... 165
Electronic Range Select (ERS)............... 290
Electronic Speed Control (Cruise Control)...... 160
Electronic Vehicle Information Center (EVIC).... 204
Electronically Shifted Transfer Case........... 298
Emergency Brake........................ 310
10
INDEX 489