maintenance RAM CHASSIS CAB 2019 Owner's Manual

354 STARTING AND OPERATING
If you regularly tow a trailer for more than 45 minutes of
continuous operation, then change the automatic transmis -
sion fluid and filter(s) as specified for "police, taxi, fleet, or
frequent trailer towing." Refer to the “Maintenance Plan” for
the proper maintenance intervals.
NOTE:
Check the automatic transmission fluid level before towing
(Six-speed automatic only).
Tow/Haul Mode
To reduce potential for automatic transmission overheating,
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.
Speed Control — If Equipped
• Do not use on hilly terrain or with heavy loads.
• When using the speed control, if you experience speed
drops greater than 10 mph (16 km/h), disengage until you
can get back to cruising speed.
• Use speed control in flat terrain and with light loads to
maximize fuel efficiency. Cooling System
To reduce potential for engine and transmission over -
heating, take the following actions:
City Driving
• In city traffic — while stopped, place the transmission in
NEUTRAL, but do not increase engine idle speed.
Highway Driving
• Reduce speed.
• Temporarily turn off air conditioning.
Air Suspension System
To aid in attaching/detaching the trailer from the vehicle,
the air suspension system can be used. Refer to “Air Suspen -
sion System” in “Starting And Operating” for further infor -
mation.
NOTE:
The vehicle must remain in the engine running position
while attaching a trailer for proper leveling of the air suspen -
sion system.

STARTING AND OPERATING 357
Over The Road Operation With Snowplow Attached
The blade restricts air flow to the radiator and causes the
engine to operate at higher than normal temperatures.
Therefore, when transporting the plow, angle the blade
completely and position it as low as road or surface condi -
tions permit. Do not exceed 40 mph (64 km/h). The operator
should always maintain a safe stopping distance and allow
adequate passing clearance.
Operating Tips
Under ideal snow plowing conditions, 20 mph (32 km/h)
should be maximum operating speed. The operator should
be familiar with the area and surface to be cleaned. Reduce
speed and use extreme caution when plowing unfamiliar
areas or under poor visibility. General Maintenance
Snowplows should be maintained in accordance with the
plow manufacturer's instructions.
Keep all snowplow electrical connections and battery termi -
nals clean and free of corrosion.
When plowing snow, to avoid transmission and drivetrain
damage, the following precautions should be observed.
• 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 transmis -
sion. 5

410
SERVICING AND MAINTENANCESCHEDULED SERVICING
Your vehicle is equipped with an automatic oil change indicator
system. The oil change indicator system will remind you that it
is time to take your vehicle in for scheduled maintenance.
Based on engine operation conditions, the oil change indi -
cator message will illuminate. This means that service is
required for your vehicle. Operating conditions such as
frequent short-trips, trailer tow, extremely hot or cold
ambient temperatures, and E85 fuel usage will influence
when the “Oil Change Required” message is displayed.
Severe Operating Conditions can cause the change oil
message to illuminate as early as 3,500 miles (5,600 km) since
last reset. Have your vehicle serviced as soon as possible,
within the next 500 miles (805 km).
Your authorized dealer will reset the oil change indicator
message after completing the scheduled oil change. If a sched -
uled oil change is performed by someone other than your autho -
rized dealer, the message can be reset by referring to the steps
described under “Instrument Cluster Display” in “Getting To
Know Your Instrument Panel” for further information. Gasoline Engines:
Under no circumstances should oil change intervals exceed
8,000 miles (13,000 km), twelve months or 350 hours of
engine run time, whichever comes first. The 350 hours of
engine run or idle time is generally only a concern for fleet
customers.
Severe Duty:
Change Engine Oil at 4,000 miles (6,500 km) or 350 hours of
engine run time if the vehicle is operated in a dusty and off
road environment or is operated predominately at idle or
very low engine RPM’s. This type of vehicle use is consid -
ered Severe Duty.

SERVICING AND MAINTENANCE 411
Once A Month Or Before A Long Trip:
• Check engine oil level.
• Check windshield washer fluid level.
• Check the tire inflation pressures and look for unusual
wear or damage. Rotate at the first sign of irregular wear.
• Check the fluid levels of the coolant reservoir, brake
master cylinder, power steering and automatic transmis -
sion (six-speed only), and fill as needed.
• Check function of all interior and exterior lights. Maintenance Plan
Required Maintenance
Refer to the maintenance plan on the following pages for
required maintenance.
At Every Oil Change Interval As Indicated By Oil Change Indicator System:
• Change oil and filter.
• Rotate the tires. Rotate at the first sign of irregular wear, even if it occurs before the oil indicator system turns on.
• Inspect engine cooling system protection and hoses.
• Inspect exhaust system.
• Inspect engine air cleaner if using in dusty or off-road conditions.
• Inspect battery and clean and tighten terminals as required.
• Inspect automatic transmission fluid if equipped with dipstick.
• Inspect brake pads, shoes, rotors, drums, hoses and park brake.
• Inspect front end, and lubricate — If equipped with serviceable fittings. 7

412 SERVICING AND MAINTENANCE
Mileage or time passed
(whichever comes first)
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
110,000
120,000
130,000
140,000
150,000Or Years: 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
32,000
48,000
64,000
80,000
96,000
112,000
128,000
144,000
160,000
176,000
192,000
208,000
224,000
240,000Additional Inspections
Inspect the CV/Universal joints. X X X X X
Inspect front suspension, tie rod
ends, and replace if necessary. X
X X X X X X
Inspect the front and rear axle
surfaces. If gear oil leakage is
suspected, check the fluid level.
If using your vehicle for police,
taxi, fleet, off-road or frequent
trailer towing, change axle fluid. X X X X X X X
Inspect the brake linings,
parking brake function. X X X X X X X
Additional Maintenance
Replace engine air filter. X X X X X
Replace spark plugs. 1
X

SERVICING AND MAINTENANCE 413
Flush and replace the engine
coolant at 10 years or 150,000 miles
(240,000 km) whichever comes first. X X
Change the automatic transmission
fluid (AS66RC Transmission Only). X X X
Change the automatic transmission
fluid and sump filter (AS66RC
Transmission Only). X X
Inspect the transfer case fluid,
change for any of the following:
police, taxi, fleet, or frequent
trailer towing. X X X X X
Change the transfer case fluid. X
Inspect and replace PCV valve if
necessary. X
1. The spark plug change interval is mileage based only, yearly intervals do not apply. Mileage or time passed
(whichever comes first)
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
110,000
120,000
130,000
140,000
150,000Or Years: 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
32,000
48,000
64,000
80,000
96,000
112,000
128,000
144,000
160,000
176,000
192,000
208,000
224,000
240,000 7

414 SERVICING AND MAINTENANCE
Heavy Duty Use Of The Vehicle
Change engine oil at 4,000 miles (6,500 km) or 350 hours of
engine run time if the vehicle is operated in a dusty and off
road environment or is operated predominately at idle or
only very low engine RPM’s. This type of vehicle use is
considered Severe Duty.WARNING!
• You can be badly injured working on or around a motor
vehicle. Do only service work for which you have the
knowledge and the right equipment. If you have any
doubt about your ability to perform a service job, take
your vehicle to a competent mechanic.
• Failure to properly inspect and maintain your vehicle
could result in a component malfunction and effect
vehicle handling and performance. This could cause an
accident.

SERVICING AND MAINTENANCE 415
ENGINE COMPARTMENT
6.4L Engine
1 — Engine Coolant Pressure Cap 6 — Battery
2 — Engine Coolant Reservoir 7 — Distribution Center (Fuses)
3 — Engine Oil Fill 8 — Washer Fluid Reservoir
4 — Engine Oil Dipstick 9 — Power Steering Fluid Reservoir
5 — Brake Fluid Reservoir 10 — Air Cleaner Filter 7

416 SERVICING AND MAINTENANCE
Checking Oil Level — Gas Engine
To assure proper lubrication of your vehicle's engine, the
engine oil must be maintained at the correct level. Check the
oil level at regular intervals, such as every fuel stop. The best
time to check the engine oil level is about five minutes after
a fully warmed up engine is shut off.
Checking the oil while the vehicle is on level ground will
improve the accuracy of the oil level readings. Always main -
tain the oil level within the SAFE zone on the dipstick.
Adding one quart of oil when the reading is at the bottom of
the SAFE zone will result in a reading at the top of the safe
zone on these engines.
Adding Washer Fluid
The fluid reservoir is located under the hood and should be
checked for fluid level at regular intervals. Fill the reservoir
with windshield washer solvent only (not radiator anti -
freeze). When refilling the washer fluid reservoir, take some washer fluid and apply it to a cloth or towel and wipe the
wiper blades clean. This will help blade performance.
To prevent freeze-up of your windshield washer system in
cold weather, select a solution or mixture that meets or
exceeds the temperature range of your climate. This rating
information can be found on most washer fluid containers.
After the engine has warmed up, operate the defroster for a
few minutes to reduce the possibility of smearing or freezing
the fluid on the cold windshield. Windshield washer solu -
tion used with water as directed on the container, aids
cleaning action, reduces the freezing point to avoid line clog -
ging, and is not harmful to paint or trim.CAUTION!
Overfilling or underfilling will cause oil aeration or loss
of oil pressure. This could damage your engine. WARNING!
Commercially available windshield washer solvents are
flammable. They could ignite and burn you. Care must
be exercised when filling or working around the washer
solution.

SERVICING AND MAINTENANCE 417
Maintenance-Free Battery
Your vehicle is equipped with a maintenance-free battery.
You will never have to add water, nor is periodic mainte -
nance required.
DEALER SERVICE
An authorized dealer has the qualified service personnel,
special tools, and equipment to perform all service opera -
tions in an expert manner. Service Manuals are available
which include detailed service information for your vehicle.
Refer to these Service Manuals before attempting any proce -
dure yourself.
NOTE:
Intentional tampering with emissions control systems may
void your warranty and could result in civil penalties being
assessed against you.WARNING!
• Battery fluid is a corrosive acid solution and can burn
or even blind you. Do not allow battery fluid to contact
your eyes, skin, or clothing. Do not lean over a battery
when attaching clamps. If acid splashes in eyes or on
skin, flush the area immediately with large amounts of
water. Refer to “Jump Starting Procedure” in “In Case
Of Emergency” for further information.
• Battery gas is flammable and explosive. Keep flame or
sparks away from the battery. Do not use a booster
battery or any other booster source with an output
greater than 12 Volts. Do not allow cable clamps to
touch each other.
• Battery posts, terminals, and related accessories contain
lead and lead compounds. Wash hands after handling. CAUTION!
• It is essential when replacing the cables on the battery
that the positive cable is attached to the positive post
and the negative cable is attached to the negative post.
Battery posts are marked positive (+) and negative (-)
and are identified on the battery case. Cable clamps
should be tight on the terminal posts and free of corro -
sion.
• If a “fast charger” is used while the battery is in the
vehicle, disconnect both vehicle battery cables before
connecting the charger to the battery. Do not use a “fast
charger” to provide starting voltage.
7