2016 Ram ProMaster Diesel Supplement

Towing Requirements — Tires
•Do not attempt to tow a trailer while using a compact
spare tire.
• Proper tire inflation pressures are essential to the safe
and satisfactory operation of your vehicle. Refer to
“Tires – General Information” in “Starting And Oper-
ating” for proper tire inflation procedures.
• Check the trailer tires for proper tire inflation pres-
sures before trailer usage.
• Check for signs of tire wear or visible tire damage
before towing a trailer. Refer to “Tires – General
Information” in “Starting And Operating” for the
proper inspection procedure.
• When replacing tires, refer to “Tires – General Infor-
mation” in “Starting And Operating” for the proper tire replacement procedures. Replacing tires with a
higher load carrying capacity will not increase the
vehicle’s GVWR and GAWR limits.
Towing Requirements — Trailer Brakes
•
Do not interconnect the hydraulic brake system or
vacuum system of your vehicle with that of the trailer.
This could cause inadequate braking and possible
personal injury.
• An electronically actuated trailer brake controller is
required when towing a trailer with electronically
actuated brakes. When towing a trailer equipped with
a hydraulic surge actuated brake system, an electronic
brake controller is not required.
• Trailer brakes are recommended for trailers over
1,000 lbs (454 kg) and required for trailers in excess of
2,000 lbs (907 kg).
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STARTING AND OPERATING 95

WARNING!
•Do not connect trailer brakes to your vehicle’s
hydraulic brake lines. It can overload your brake
system and cause it to fail. You might not have
brakes when you need them and could have a
collision.
• Towing any trailer will increase your stopping
distance. When towing you should allow for addi-
tional space between your vehicle and the vehicle
in front of you. Failure to do so could result in a
collision.
CAUTION!
If the trailer weighs more than 1,000 lbs (454 kg)
loaded, it should have its own brakes and they
should be of adequate capacity. Failure to do this
could lead to accelerated brake lining wear, higher
brake pedal effort, and longer stopping distances.
Towing Requirements — Trailer Lights And Wiring
Whenever you pull a trailer, regardless of the trailer size,
stoplights and turn signals on the trailer are required for
motoring safety.
The Trailer Tow Package may include a four- and seven-
pin wiring harness. Use a factory approved trailer har-
ness and connector.
96 STARTING AND OPERATING

NOTE:Do not cut or splice wiring into the vehicles
wiring harness. The electrical connections are all complete to the vehicle
but you must mate the harness to a trailer connector.
Refer to the following illustrations.
Trailer Electrical Connector Location
1 — Four-Pin Connector Location
2 — Seven-Pin Connector Location
Four-Pin Connector
1 — Female Pins
4 — Park
2 — Male Pin 5 — Left Stop/Turn
3 — Ground 6 — Right Stop/Turn
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Towing Tips
Before setting out on a trip, practice turning, stopping,
and backing up the trailer in an area located away from
heavy traffic.
Automated Manual Transmission
DRIVE (D) (automatic mode) can be used when towing.
If frequent shifting occur while in DRIVE, select TOW/
HAUL mode, or change to MANUAL (M) mode and
manually select a lower gear.
NOTE:Using a lower gear while operating the vehicle
under heavy loading conditions will improve perfor-
mance and extend transmission life by reducing exces-
sive shifting and heat build up. This action will also
provide better engine braking.
Seven-Pin Connector
1 — Battery 5 — Ground
2 — Backup Lamps 6 — Left Stop/Turn
3 — Right Stop/Turn 7 — Running Lamps
4 — Electric Brakes 98 STARTING AND OPERATING

Tow/Haul Mode
To reduce the potential for transmission overheating,
activate the “TOW/HAUL” feature when using DRIVE
(D) (automatic mode) in hilly areas.
Electronic Speed Control — If Equipped
•Do not use in 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
When stopped for short periods, shift the transmission
into NEUTRAL and increase engine idle speed.
Highway Driving
Reduce speed.
Air Conditioning
Turn off temporarily.
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MAINTAINING YOUR VEHICLE
CONTENTS
ENGINE COMPARTMENT — 3.0L DIESEL . . . .102
 MAINTENANCE PROCEDURES ...........103
▫ Engine Oil ......................... .104
▫ Engine Air Cleaner Filter ................106
▫ Draining Fuel Filter/Water Separator .......107
▫ Fuel Filter Replacement .................108
▫ Priming If The Engine Has Run Out Of Fuel . .108
▫ Intervention Regeneration Strategy —
Message Process Flow ..................110 ▫
Maintenance-Free Batteries ..............110
▫ Cooling System .......................111
▫ Brake System ........................117
▫ Automated Manual Transmission ..........118
 FLUID CAPACITIES ....................119
 FLUIDS, LUBRICANTS AND GENUINE
PARTS ............................. .120
▫ Engine ............................ .120
▫ Chassis ........................... .123
6

ENGINE COMPARTMENT — 3.0L DIESEL
1 — Washer Solvent Reservoir4 — Engine Oil Dipstick7 — Front Power Distribution Center
(Fuses)
2 — Power Steering Reservoir 5 — Brake Fluid Reservoir8 — Jump Starting Location
3 — Engine Oil Fill 6 — Fuel Filter Housing Location9 — Coolant Reservoir
102 MAINTAINING YOUR VEHICLE