2011 RAM CHASSIS CAB radiator cap

Under normal operating conditions, the catalytic con-
verter will not require maintenance. However, it is impor-
tant to keep the engine properly tuned to assure proper
catalyst operation and prevent possible catalyst damage.
NOTE: Intentional tampering with emissions control
systems can result in civil penalties being assessed
against you.
In unusual situations involving grossly malfunctioning
engine operation, a scorching odor may suggest severe
and abnormal catalyst overheating. If this occurs, stop
the vehicle, turn off the engine and allow it to cool.
Service, including a tune-up to manufacturer’s specifica-
tions, should be obtained immediately.
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.392 MAINTAINING YOUR VEHICLE

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.
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 “Maintenance Schedule” for 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.
7 MAINTAINING YOUR VEHICLE 393

• Mix a minimum solution of 50% HOAT engine coolant
and distilled water. Use higher concentrations (not to
exceed 70%) if temperatures below  34°F (  37°C) are
anticipated.
• Use only high purity water such as distilled or deion-
ized water when mixing the water/engine coolant
(antifreeze) solution. The use of lower quality water
will reduce the amount of corrosion protection in the
engine cooling system.
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 precaution.
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 pres-
sure cap while the system is hot or under pressure.
(Continued)
7 MAINTAINING YOUR VEHICLE 395

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 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.
Coolant Level
The coolant bottle provides a quick visual method for
determining that the coolant level is adequate. With the engine cold, the level of the engine coolant (antifreeze) in
the coolant recovery 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 en-
gine 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 (a
few kilometers) of operation, you may observe vapor
coming from the front of the engine compartment. This is396 MAINTAINING YOUR VEHICLE

Automatic Transmission
Adding Fluid ......................... 403
Fluid and Filter Changes ................. 404
Fluid Level Check ................... 402,403
Fluid Type ........................ 402,424
Shifting ............................. 268
Special Additives ...................... 404
Axle Fluid ....................... 400,401,424
Axle Lubrication (Axle Fluid) ............ 400,401
Battery ............................... 385
Keyless Transmitter Replacement (RKE) ....... 24
Saving Feature (Protection) ............... 144
Belts, Seat ............................ 38,73
Body Builders Guide ....................... 6
Body Mechanism Lubrication ............... 388
B-Pillar Location ........................ 300
Brake Fluid ......................... 398,424 Brake System ........................ 292,398
Anti-Lock (ABS) ....................... 292
Fluid Check .......................... 398
Master Cylinder ....................... 398
Parking ............................. 289
Warning Light ........................ 187
Brake/Transmission Interlock ............... 267
Bulb Replacement ....................... 416
Bulbs, Light .......................... 76,415
Cab Top Clearance Lights .................. 420
Calibration, Compass ..................... 204
Capacities, Antifreeze (Engine Coolant) ........ 422
Capacities, Fluid ........................ 422
Caps, Filler
Oil (Engine) .......................... 383
Power Steering ........................ 289
Radiator (Coolant Pressure) ............... 395
Car Washes ............................ 405
10 INDEX 455

Carbon Monoxide Warning ............... 73,321
Cargo Light ............................ 144
Cellular Phone ........................ 88,247
Center High Mounted Stop Light ............ 419
Center Lap Belts ......................... 46
Center Seat Storage Compartment ............ 166
Certification Label ....................... 324
Chart, Tire Sizing ........................ 296
Check Engine Light
(Malfunction Indicator Light) ............. 189,379
Checking Your Vehicle For Safety ............. 72
Checks, Safety ........................... 72
Child Restraint ........................ 60,61
Child Restraint Tether Anchors ............. 64,67
Child Seat ............................ 61,65
Cigar Lighter ........................... 160
Cleaning
Wheels ............................. 407
Climate Control ......................... 247 Clock ............................. 212,221
Compact Disc (CD) Maintenance ............. 246
Compass .............................. 203
Compass Calibration ..................... 204
Compass Variance ....................... 204
Computer, Trip/Travel .................... 201
Connector
UCI ................................ 235
Universal Consumer Interface (UCI) ......... 235
Console, Overhead ....................... 155
Contract, Service ........................ 447
Coolant Pressure Cap (Radiator Cap) .......... 395
Cooling System ......................... 392
Adding Coolant (Antifreeze) .............. 394
Coolant Capacity ...................... 422
Coolant Level ...................... 393,396
Disposal of Used Coolant ................ 396
Drain, Flush, and Refill .................. 393
Inspection ........................... 396456 INDEX

Points to Remember .................... 396
Pressure Cap ......................... 395
Radiator Cap ......................... 395
Selection of Coolant (Antifreeze) ......... 393,423
Cruise Control (Speed Control) .............. 152
Cupholders ............................ 162
Customer Assistance ..................... 445
Data Recorder, Event ...................... 59
Daytime Running Lights ................... 145
Dealer Service .......................... 380
Defroster, Rear Window ................... 171
Defroster, Windshield ................ 74,250,255
Delay (Intermittent) Wipers ................. 147
Differential, Limited-Slip .................. 284
Dipsticks
Automatic Transmission ................. 403
Power Steering ........................ 289 Disposal
Antifreeze (Engine Coolant) ............... 396
Door Locks ............................. 29
Driving
Through Flowing, Rising,
or Shallow Standing Water ............... 285
Dual Rear Wheels ..................... 316,363
Electric Rear Window Defrost ............... 171
Electrical Power Outlets ................... 157
Electronic Range Select (ERS) ............... 268
Electronic Speed Control (Cruise Control) ...... 152
Electronic Vehicle Information Center (EVIC) .... 192
Electronically Shifted Transfer Case ........... 278
Emergency Brake ........................ 289
Emergency, In Case of
Freeing Vehicle When Stuck ............... 370
Hazard Warning Flasher ................. 356
Jump Starting ......................... 366
10 INDEX 457

Programming Transmitters
(Remote Keyless Entry) .................... 20
Radial Ply Tires ......................... 309
Radiator Cap (Coolant Pressure Cap) ....... 393,395
Radio Operation ........................ 247
Radio, Satellite (Uconnect™ studios) .......... 240
Rear Axle (Differential) ................. 400,401
Rear Window Features .................... 171
Rear Window, Sliding ..................... 172
Reclining Front Seats ..................... 124
Recorder, Event Data ...................... 59
Recreational Towing ...................... 344
Shifting into Transfer Case Neutral (N) .... 346,349
Shifting out of Transfer Case Neutral (N) . . 348,352
Reformulated Gasoline .................... 318
Refrigerant ............................ 388
Reminder, Seat Belt ....................... 48 Remote Control
Starting System ........................ 26
Remote Keyless Entry (RKE) ................. 20
Remote Sound System (Radio) Controls ........ 245
Remote Starting System .................... 26
Replacement Keys ........................ 17
Replacement Parts ....................... 380
Replacement Tires ....................... 311
Reporting Safety Defects ................... 448
Resetting Oil Change Indicator ........... 184,199
Restraint, Head ......................... 126
Restraints, Child ....................... 60,65
Restraints, Occupant ...................... 37
Rotation, Tires .......................... 315
Safety Checks Inside Vehicle ................. 73
Safety Checks Outside Vehicle ............... 76
Safety Defects, Reporting .................. 448
Safety, Exhaust Gas ....................... 73
10 INDEX 465