2007 DODGE GRAND CARAVAN ECU

WARNING!Cargo must be securely tied before driving your
vehicle. Improperly secured loads can fly off the
vehicle, particularly at high speeds, resulting in
personal injury or property damage. Follow the Roof
Rack Cautions when carrying cargo on your roof
rack.
LOAD LEVELING SYSTEM
The automatic load leveling system will provide a level
riding vehicle under most passenger and cargo loading
conditions.
A hydraulic pump contained within the shock absorbers
raises the rear of the vehicle to the correct height. It takes
approximately 1 mile (1.6 km) of driving for the leveling
to complete depending on road surface conditions. If the leveled vehicle is not moved for approximately 15
hours, the leveling system will bleed itself down. The
vehicle must be driven to reset the system.
WARNING!Do not install the load leveling system on vehicles
that are not equipped with Anti-Lock Brakes. Ve-
hicles without Anti-Lock Brakes (ABS) have a
height-sensing proportioning valve. Installing a lev-
eling system will render this system ineffective,
inappropriately reducing rear brake pressure, result-
ing in increased stopping distances. You could have
an accident. UNDERSTANDING THE FEATURES OF YOUR VEHICLE 201
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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. CAUTION!Do not load your vehicle any heavier than the
GVWR or the maximum front and rear GAWR. If
you do, parts on your vehicle can break, or it can
change the way your vehicle handles. This could
cause you to lose control. Also overloading can
shorten the life of your vehicle.366 STARTING AND OPERATING

6. These locations are on the sill flange of the body and
consist of a pair of downstanding tabs. The jack is to be
located, engaging the flange, between the pair of tabs
closest to the wheel to be changed. 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.
CAUTION!Do not attempt to raise the vehicle by jacking on
locations other than those indicated in step 5.
7. 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.
8. 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.
9. Install the compact spare tire. Lightly tighten the lug
nuts. To avoid the risk of forcing the vehicle off the jack,
do not tighten the lug nuts fully until the vehicle has been
lowered.
NOTE: Do not install the wheel cover on the compact
spare.
Do not use a hammer or force to install the wheel covers.394 WHAT TO DO IN EMERGENCIES

15. Stow the jack, jack handle and winch handle tools.
16. Check the compact spare tire pressure as soon as
possible. Correct pressure as required. Secure The Spare Tire As Follows:
1. To stow the compact spare tire/cover assembly on
vehicles equipped with Stow ’n Go seating, assemble the
winch handle extensions to form a “T’ 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.
Jack Removal/Installation396 WHAT TO DO IN EMERGENCIES

5. These locations are on the sill flange of the body and
consist of a pair of downstanding tabs. The jack is to be
located, engaging the flange, between the pair of tabs
closest to the wheel to be changed. 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.
6. 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.
7. 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.
8. Install the spare wheel, for vehicles with wheel covers,
align the notch in the wheel cover with the valve stem on
the wheel. Install the cover on the wheel by hand only
and install the wheel lug nuts with the cone shaped end
of the nut toward the wheel. Lightly tighten the lug nuts.
To avoid the risk of forcing the vehicle off the jack, do not
tighten the lug nuts fully until the vehicle has been
lowered. WHAT TO DO IN EMERGENCIES 403
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NOTE: Do not install the wheel cover on the compact
spare.
Do not use a hammer or force to install the wheel covers.
9. Lower the vehicle by turning the jack screw to the left.
10. Finish tightening the lug nuts. Push down on the
wrench while tightening for increased leverage. Alternate
lug nuts until each nut has been tightened twice. Correct
wheel nut tightness is 130 N·m (95 ft. lbs). If in doubt
about the correct tightness, have them checked with a
torque wrench by your dealer or at a service station.
11. Lower the jack to its fully closed position. 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.
12. Secure the flat or spare tire as follows:
• If your vehicle is equipped with cast aluminum
wheels, the center cap of the wheel must be re-
moved prior to flat tire stowage. Store the center cap
inside the glove box or other storage compartment.
• Turn the wheel so that the valve stem is down. Slide
the wheel retainer through the center of the wheel
and position it properly across the wheel opening.404 WHAT TO DO IN EMERGENCIES

• For convenience in checking the spare tire inflation,
stow with the valve stem toward the rear of the
vehicle.
• Using the jack handle, rotate the drive nut to the
right until the wheel is drawn into place against the
underside of the vehicle.
• Continue to rotate the nut until you hear the mecha-
nism click three times. It cannot be overtightened.
Push against the tire several times to be sure it is
securely in place.
13. Stow the jack and jack handle.
14. Check the tire pressure as soon as possible. Correct
pressure as required. JUMP-STARTING PROCEDURE
WARNING!• Do not attempt to push or tow your vehicle to get it started.
Vehicles equipped with an automatic transmission cannot be
started this way. Unburned fuel could enter the catalytic con-
verter and once the engine has started, ignite and damage the
converter and vehicle. If the vehicle has a discharged battery,
booster cables may be used to obtain a start from another
vehicle. This type of start can be dangerous if done improperly,
so follow this procedure carefully.
• Battery fluid is a corrosive acid solution; do not allow battery
fluid to contact eyes, skin or clothing. Don’t lean over battery
when attaching clamps or allow the clamps to touch each other.
If acid splashes in eyes or on skin, flush contaminated area
immediately with large quantities of water.
• A battery generates hydrogen gas which is flammable and
explosive. Keep flame or spark away from the vent holes. Do
not use a booster battery or any other booster source with an
output that exceeds 12 volts.
• Take care to avoid the radiator cooling fan whenever the hood
is raised. It can start anytime the ignition switch is on. You can
be hurt by the fan. WHAT TO DO IN EMERGENCIES 405
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• Make sure that the radiator and coolant recovery
bottle overflow hoses are not kinked or obstructed.
• Keep the front of the radiator clean. If your vehicle is
equipped with air conditioning, keep the front of the
condenser clean, also.
• Do not change the thermostat for summer or winter
operation. If replacement is ever necessary, install
ONLY the correct type thermostat. Other designs may
result in unsatisfactory coolant performance, poor gas
mileage, and increased emissions.
Hoses And Vacuum/Vapor Harnesses
Inspect surfaces of hoses and nylon tubing for evidence
of heat and mechanical damage. Hard or soft spots,
brittle rubber, cracking, tears, cuts, abrasions, and exces-
sive swelling indicate deterioration of the rubber.
Pay particular attention to those hoses nearest to high
heat sources such as the exhaust manifold. Inspect hose routing to be sure hoses do not come in contact with any
heat source or moving component which may cause heat
damage or mechanical wear.
Insure nylon tubing in these areas has not melted or
collapsed.
Inspect all hose connections such as clamps and cou-
plings to make sure they are secure and no leaks are
present.
Components should be replaced immediately if there is
any evidence of wear or damage that could cause failure.
Brakes
In order to assure brake system performance, all brake
system components should be inspected periodically.
Suggested service intervals can be found in the Mainte-
nance Schedules. MAINTAINING YOUR VEHICLE 439
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