engine overheat RAM CHASSIS CAB 2016 User Guide

Automatic Transmission — If Equipped
The DRIVE range can be selected when towing. The
transmission controls include a drive strategy to avoid
frequent shifting when towing. However, if frequent
shifting does occur while in DRIVE, select TOW/HAUL
mode or select a lower gear range (using the Electronic
Range Select (ERS) shift control).
NOTE: Using TOW/HAUL mode, or selecting a lower
gear range (using the ERS shift control) while operating
the vehicle under heavy loading conditions will improve
performance and extend transmission life by reducing
excessive shifting and heat build up. This action will also
provide better engine braking.
When towing a loaded trailer up steep grades at low
speeds (20 mph [32 km/h] or below), holding your
vehicle in first gear (using the ERS shift control) can help
to avoid transmission overheating. If you regularly tow a trailer for more than 45 minutes of
continuous operation, then change the transmission fluid
and filter(s) as specified for  police, taxi, fleet, or frequent
trailer towing.  Refer to the “Maintenance Schedule” for
the proper maintenance intervals.
NOTE: Check the automatic transmission fluid level
before towing.
Tow/Haul Mode
To reduce potential for automatic transmission overheat-
ing, activate TOW/HAUL mode when driving in hilly
areas, or select a lower gear range (using the Electronic
Range Select (ERS) shift control) on more severe grades. 5STARTING AND OPERATING 523

General Maintenance
Snowplows should be maintained in accordance with the
plow manufacturer’s instructions.
Keep all snowplow electrical connections and battery
terminals clean and free of corrosion.
When plowing snow, to avoid transmission and drive-
train damage, the following precautions should be ob-
served. • Operate with transfer case in 4LO when plowing small
or congested areas where speeds are not likely to
exceed 15 mph (24 km/h). At higher speeds operate in
4HI.
• Vehicles with automatic transmissions should use 4LO
range when plowing deep or heavy snow for extended
periods of time to avoid transmission overheating.
• Do not shift the transmission unless the engine has
returned to idle and wheels have stopped. Make a
practice of stepping on the brake pedal while shifting
the transmission. 5STARTING AND OPERATING 527

WHAT TO DO IN EMERGENCIESCONTENTS  HAZARD WARNING FLASHERS .......... .536
 IF YOUR ENGINE OVERHEATS ........... .536
 WHEEL AND TIRE TORQUE
SPECIFICATIONS ..................... .537
▫ Torque Specifications ................. .538
 JACKING AND TIRE CHANGING ......... .540
▫ 4500/5500 Models .................... .540
▫ Preparations For Jacking ................ .541
▫ Jacking Instructions ................... .542
 HOISTING .......................... .548  JUMP-STARTING PROCEDURES .......... .548
▫ Preparations For Jump-Start ............. .549
▫ Jump-Starting Procedure ............... .550
 FREEING A STUCK VEHICLE ............ .553
 EMERGENCY TOW HOOKS — IF EQUIPPED . .554
 GEAR SELECTOR OVERRIDE ............ .555
 TOWING A DISABLED VEHICLE .......... .556
▫ Two-Wheel Drive Models ............... .557
▫ Four-Wheel Drive Models ............... .5586

HAZARD WARNING FLASHERS
The Hazard Warning flasher switch is located on the
upper switch bank just below the radio.
Push the switch to turn on the Hazard Warning
flasher. When the switch is activated, all direc-
tional turn signals will flash on and off to warn oncoming
traffic of an emergency. Push the switch a second time to
turn off the Hazard Warning flashers.
This is an emergency warning system and it should not
be used when the vehicle is in motion. Use it when your
vehicle is disabled and it is creating a safety hazard for
other motorists.
When you must leave the vehicle to seek assistance, the
Hazard Warning flashers will continue to operate even
though the ignition is placed in the OFF position.
NOTE: With extended use the Hazard Warning flashers
may wear down your battery. IF YOUR ENGINE OVERHEATS
In any of the following situations, you can reduce the
potential for overheating by taking the appropriate ac-
tion.
• 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 a536 WHAT TO DO IN EMERGENCIES

FREEING A STUCK VEHICLE
If your vehicle becomes stuck in mud, sand, or snow, it
can often be moved using a rocking motion. Turn the
steering wheel right and left to clear the area around the
front wheels. Then shift back and forth between DRIVE
and REVERSE (with automatic transmission) or 2nd gear
and REVERSE (with manual transmission), while gently
pressing the accelerator. Use the least amount of accel-
erator pedal pressure that will maintain the rocking
motion, without spinning the wheels or racing the en-
gine.
CAUTION!Racing the engine or spinning the wheels may lead to
transmission overheating and failure. Allow the en-
gine to idle with the transmission in NEUTRAL for at
least one minute after every five rocking-motion (Continued) CAUTION! (Continued)cycles. This will minimize overheating and reduce
the risk of clutch or transmission failure during
prolonged efforts to free a stuck vehicle.
NOTE: Push the  ESC Off  switch, to place the Electronic
Stability Control (ESC) system in  Partial Off  mode,
before rocking the vehicle. Refer to “Electronic Brake
Control” in “Starting And Operating” for further infor-
mation. Once the vehicle has been freed, push the  ESC
Off  switch again to restore  ESC On  mode.
CAUTION!• When “rocking” a stuck vehicle by shifting be-
tween DRIVE/2nd gear and REVERSE, do not spin
the wheels faster than 15 mph (24 km/h), or drive-
train damage may result. (Continued) 6WHAT TO DO IN EMERGENCIES 553

CAUTION! (Continued)• Revving the engine or spinning the wheels too fast
may lead to transmission overheating and failure.
It can also damage the tires. Do not spin the wheels
above 30 mph (48 km/h) while in gear (no trans-
mission shifting occurring).
WARNING!Fast spinning tires can be dangerous. Forces gener-
ated by excessive wheel speeds may cause damage, or
even failure, of the axle and tires. A tire could
explode and injure someone. Do not spin your vehi-
cle’s wheels faster than 30 mph (48 km/h) or for
longer than 30 seconds continuously without stop-
ping when you are stuck and do not let anyone near
a spinning wheel, no matter what the speed. EMERGENCY TOW HOOKS — IF EQUIPPED
Your vehicle may be equipped with emergency tow
hooks.
NOTE: For off-road recovery, it is recommended to use
both of the front tow hooks to minimize the risk of
damage to the vehicle.
WARNING!• Do not use a chain for freeing a stuck vehicle.
Chains may break, causing serious injury or death.
• Stand clear of vehicles when pulling with tow
hooks. Tow straps may become disengaged, caus-
ing serious injury.554 WHAT TO DO IN EMERGENCIES

CAUTION!• The catalytic converter requires the use of un-
leaded fuel only. Leaded gasoline will destroy the
effectiveness of the catalyst as an emissions control
device and may seriously reduce engine perfor-
mance and cause serious damage to the engine.
• Damage to the catalytic converter can result if your
vehicle is not kept in proper operating condition.
In the event of engine malfunction, particularly
involving engine misfire or other apparent loss of
performance, have your vehicle serviced promptly.
Continued operation of your vehicle with a severe
malfunction could cause the converter to overheat,
resulting in possible damage to the converter and
vehicle. Under normal operating conditions, the catalytic con-
verter will not require maintenance. However, it is im-
portant 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.586 MAINTAINING YOUR VEHICLE

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.
• 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.
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 7MAINTAINING YOUR VEHICLE 591

Emission Control System Maintenance ......... .566
Engine ................................ .563
Air Cleaner .......................... .572
Break-In Recommendations ................115
Compartment Identification ............... .563
Coolant (Antifreeze) .................... .627
Exhaust Gas Caution .................117,502
Flooded, Starting ...................... .403
Fuel Requirements ..................... .498
Jump Starting ......................... .548
Oil ............................. .569, 627
Oil Filler Cap ......................... .571
Oil Filter ............................ .572
Oil Selection .......................... .570
Oil Synthetic ......................... .571
Overheating .......................... .536
Engine Oil Viscosity ...................... .571
Enhanced Accident Response Feature ............79
Entry System, Illuminated ....................24 Ethanol ............................... .499
Event Data Recorder ........................82
Exhaust Gas Caution ....................117,502
Exhaust System .......................117,585
Exterior Lighting ......................... .163
Exterior Lights .......................... .120
Filters
Air Cleaner .......................... .572
Engine Fuel .......................... .627
Engine Oil ........................ .572, 627
Engine Oil Disposal .................... .571
Flashers
Turn Signal .................... .120, 173, 265
Flat Tire Stowage ........................ .548
Flooded Engine Starting ................... .403
Fluid, Brake ............................ .629
Fluid Capacities ......................... .626
Fluid Leaks ............................ .12110 INDEX 657

Recommendation ...................... .570
Synthetic ............................ .571
Viscosity ............................ .571
Oil Filter, Change ........................ .572
Oil Pressure Light ........................ .246
Onboard Diagnostic System ................. .564
Operating Precautions ..................... .564
Operator Manual (Owner’s Manual) .............4
Outside Rearview Mirrors .................. .136
Overdrive .............................. .417
Overdrive OFF Switch ..................... .417
Overhead Console ........................ .208
Overheating, Engine ...................... .536
Owner’s Manual (Operator Manual) ..........4,646
Paint Care ............................. .600
Panic Alarm ..............................29
Parking Brake ........................... .439
ParkSense System, Rear ................. .187, 196 Passing Light ........................... .174
Passive Entry .............................42
Pedals, Adjustable ........................ .179
Personalized Menu Bar .................... .373
Personal Settings ..................... .282, 305
Pets ...................................114
Placard, Tire And Loading Information ......... .467
Power
Distribution Center (Fuses) ............... .608
Door Locks ............................39
Mirrors ............................. .138
Outlet (Auxiliary Electrical Outlet) ....... .210, 216
Seats ............................... .143
Sliding Rear Window ................... .227
Steering .......................... .437, 438
Take-Off Adapter ...................... .420
Take-Off Operation ..................... .420
Windows ..............................46 10 INDEX 663