2012 Ram Cargo Van ECU

Curb Weight
The curb weight of a vehicle is defined as the total weight
of the vehicle with all fluids, including vehicle fuel, at full
capacity conditions, and with no occupants or cargo
loaded into the vehicle. The front and rear curb weight
values are determined by weighing your vehicle on a
commercial scale before any occupants or cargo are
added.
Overloading
The load carrying components (axle, springs, tires,
wheels, etc.) of your vehicle will provide satisfactory
service as long as you do not exceed the GVWR and front
and rear GAWR.
The best way to figure out the total weight of your
vehicle is to weigh it when it is fully loaded and ready for
operation. Weigh it on a commercial scale to ensure that
it is not over the GVWR.Figure out the weight on the front and rear of the vehicle
separately. It is important that you distribute the load
evenly over the front and rear axles.
Overloading can cause potential safety hazards and
shorten useful service life. Heavier axles or suspension
components do not necessarily increase the vehicle’s
GVWR.
Loading
To load your vehicle properly, first figure out its empty
weight, axle-by-axle and side-by-side. Store heavier items
down low and be sure you distribute their weight as
evenly as possible. Stow all loose items securely before
driving. If weighing the loaded vehicle shows that you
have exceeded either GAWR, but the total load is within
the specified GVWR, you must redistribute the weight.
Improper weight distribution can have an adverse effect
on the way your vehicle steers and handles, and the way
the brakes operate.
494 STARTING AND OPERATING

WARNING! (Continued)
•Make certain that the load is secured in the trailer
and will not shift during travel. When trailering
cargo that is not fully secured, dynamic load shifts
can occur that may be difficult for the driver to
control. You could lose control of your vehicle and
have a collision.
•When hauling cargo or towing a trailer, do not
overload your vehicle or trailer. Overloading can
cause a loss of control, poor performance or dam-
age to brakes, axle, engine, transmission, steering,
suspension, chassis structure or tires.
•Safety chains must always be used between your
vehicle and trailer. Always connect the chains to
the frame or hook retainers of the vehicle hitch.
Cross the chains under the trailer tongue and
allow enough slack for turning corners.(Continued)
WARNING! (Continued)
•Vehicles with trailers should not be parked on a
grade. When parking, apply the parking brake on
the tow vehicle. Put the tow vehicle automatic
transmission in PARK. Always, block or chock
the trailer wheels.
•GCWR must not be exceeded.
•Total weight must be distributed between the tow
vehicle and the trailer such that the following four
ratings are not exceeded:
1. GVWR
2. GTW
3. GAWR
4. Trailer tongue weight rating for that trailer
hitch. (This requirement may limit the ability to
always achieve the 10% to 15% range of trailer
tongue weight as a percentage of total trailer
weight.)
504 STARTING AND OPERATING

WHAT TO DO IN EMERGENCIES
CONTENTS
Hazard Warning Flashers ................ 513
 If Your Engine Overheats ................ 513
 Jacking And Tire Changing ............... 514
▫ Jack Location ....................... 515
▫ Spare Tire Removal ................... 516
▫ To Access Spare Tire Winch Drive Nut ..... 516
▫ Spare Tire Tools ..................... 518
▫ Spare Tire Removal Instructions .......... 520▫
Preparations For Jacking ............... 522
▫ Jacking Instructions ................... 523
▫ Securing The Spare Tire ................ 528
▫ Road Tire Installation ................. 530
 Jump-Starting Procedure ................ 532
▫ Preparations For Jump-Start ............. 533
▫ Jump-Starting Procedure ............... 534
6

Jacking Instructions
WARNING!
Carefully follow these tire changing warnings to
help prevent personal injury or damage to your
vehicle:
•Always park on a firm, level surface as far from
the edge of the roadway as possible before raising
the vehicle.
•Turn on the Hazard Warning flasher.
•Block the wheel diagonally opposite the wheel to
be raised.
•Set the parking brake firmly and set an automatic
transmission in PARK; a manual transmission in
REVERSE.
•Never start or run the engine with the vehicle on a
jack.(Continued)
WARNING! (Continued)
•Do not let anyone sit in the vehicle when it is on a
jack.
•Do not get under the vehicle when it is on a jack.
•Only use the jack in the positions indicated and
for lifting this vehicle during a tire change.
•If working on or near a roadway, be extremely
careful of motor traffic.
•To assure that spare tires, flat or inflated, are
securely stowed, spares must be stowed with the
valve stem facing the ground.
Jack Warning Label
6
WHAT TO DO IN EMERGENCIES 523

WARNING!
Being under a jacked-up vehicle is dangerous. The
vehicle could slip off the jack and fall on you. You
could be crushed. Never get any part of your body
under a vehicle that is on a jack. If you need to get
under a raised vehicle, take it to a service center
where it can be raised on a lift.
3. Place the wrench on the jack screw and turn to the
right until the jack head is properly engaged in the
described location. Do not raise the vehicle until you are
sure the jack is securely engaged.
4. Raise the vehicle by turning the jack screw to the right,
using the swivel wrench. Raise the vehicle only until the
tire just clears the surface and enough clearance is
obtained to install the spare tire. Minimum tire lift
provides maximum stability.
WARNING!
Raising the vehicle higher than necessary can make
the vehicle less stable. It could slip off the jack and
hurt someone near it. Raise the vehicle only enough
to remove the tire.
5. Remove the wheel lug nuts, for vehicles with wheel
covers, remove the cover from the wheel by hand. Do not
pry the wheel cover off. Then pull the wheel off the hub.
6. Install the compact spare tire. Lightly tighten the lug
nuts.
CAUTION!
Be sure to mount the spare tire with the valve stem
facing outward. The vehicle could be damaged if the
spare tire is mounted incorrectly.
526 WHAT TO DO IN EMERGENCIES

WARNING!
A loose tire or jack thrown forward in a collision or
hard stop could endanger the occupants of the ve-
hicle. Always stow the jack parts and the spare tire in
the places provided. Have the deflated (flat) tire
repaired or replaced immediately.
10. Place the deflated (flat) tire and compact spare tire
cover assembly in the rear cargo area. Do not stow the
deflated tire in the spare tire location. Have the full-
sized tire repaired or replaced, as soon as possible.
11. Stow the cable and wheel spacer before driving the
vehicle. Reassemble the winch handle extensions to form
a “T” and fit the winch T-handle over the drive nut.
Rotate the nut to the right until the winch mechanism
clicks at least three times. NOTE:
Refer to the “Spare Tire Tools” section for
instructions on assembling the T-handle.
12. Stow the jack, jack handle and winch handle tools
back in the stowage compartment.
13. Check the compact spare tire pressure as soon as
possible. Correct the tire pressure, as required.
Securing The Spare Tire
1. Assemble the winch handle extensions to form a
T-handle and fit the winch T-handle over the drive nut.
Rotate the nut to the left until the winch mechanism stops
turning freely. This will allow enough slack in the cable to
allow you to pull the wheel spacer out from under the
vehicle.
528 WHAT TO DO IN EMERGENCIES

CAUTION!
•Do not use sling type equipment when towing.
Damage to the fascia will occur.
•When securing the vehicle to a flatbed truck, do
not attach to front or rear suspension components.
Damage to your vehicle may result from improper
towing.
•Do not push or tow this vehicle with another
vehicle as damage to the bumper fascia and trans-
mission may result.
•If the vehicle being towed requires steering, the
ignition switch must be in the ON/RUN position,
not the LOCK or ACC positions.The manufacturer recommends towing your vehicle with
all four wheels OFF the ground using a flatbed. If flatbed
equipment is not available, and the transmission is
operable, the vehicle may be flat towed (with all four
wheels on the ground) under the following conditions:
•The shift lever must be in NEUTRAL.
•The towing distance to be traveled must not exceed
15 miles (24 km).
•The towing speed must not exceed 25 mph (40 km/h).
If the transmission is not operable, or the vehicle must
be towed faster than 25 mph (40 km/h) or farther than
15 miles (24 km), it must be towed with the front
wheels OFF the ground (using a flatbed truck, or wheel
lift equipment with the front wheels raised).
540 WHAT TO DO IN EMERGENCIES

WARNING!
Do not remove the A/C air filter while the blower is
operating or personal injury may result.
The A/C air filter is located in the fresh air inlet behind
the glove box. Perform the following procedure to re-
place the filter:
1. Open the glove compartment and remove all contents.
2. Push in on the sides of the glove compartment and
lower the door.
3. Pivot the glove compartment downward.
4. Disengage the two retaining tabs that secure the filter
cover to the HVAC housing, and remove the cover. 5. Remove the A/C air filter by pulling it straight out of
the housing.
6. Install the A/C air filter with the arrow on the filter
pointing toward the floor. When installing the filter
cover, make sure the retaining tabs fully engage the
cover.
A/C Air Filter Replacement
7
MAINTAINING YOUR VEHICLE 559