2015 JEEP COMPASS ECU

CAUTION!
Never park your vehicle over dry grass or other
combustible materials. The heat from your vehicle
exhaust system could cause a fire.
WARNING!
Always wear your seat belt and firmly tie down
cargo. Unsecured cargo can become projectiles in an
off-road situation.
When To Use Low (L Off-Road) With The 4WD
Lock Lever Engaged
When driving off-road, shift into low (L Off-Road) and
activate the 4WD LOCK. This will provide additional
traction and activates the numerous off-road features to
improve handling and control on slippery or difficult
terrain. Due to the sustained lower gearing, low (L Off-
Road) with 4WD LOCK engaged will allow the engine to
operate in a higher power range. This will allow you to
cross over obstacles and descend hills, with improved
control and less effort.
NOTE:For maximum off-road performance, premium
fuel is recommended. While the vehicle will operate on
regular fuel when in L Off-Road mode, the engine has been
calibrated for maximum performance using premium fuel.
Driving In Snow, Mud And Sand
There is a drastic reduction in traction when driving in
snow, mud or sand. The vehicle will be less responsive to
steering, acceleration and braking inputs. Therefore, you
should accelerate slowly, leave greater stopping distances
and avoid abrupt vehicle maneuvers. You want to keep a
slow constant steady pace. The key is to maintain the
vehicle’s momentum.
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Inflation Pressure
This is the cold tire inflation pressure for your vehicle for
all loading conditions up to full GAWR.
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 (springs, tires, wheels,
etc.) of your vehicle will provide satisfactory service as
long as you do not exceed the GVWR.
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.
Overloading can cause potential safety hazards and
shorten useful service life. Heavier suspension compo-
nents do not necessarily increase the vehicle’s GVWR.
Loading
To load your vehicle properly, first figure out its empty
weight. Store heavier items down low and be sure you
distribute their weight as evenly as possible. Stow all
loose items securely before driving. Improper weight
distribution can have an adverse effect on the way
your vehicle steers and handles, and the way the brakes
operate.
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WARNING!
Improper towing can lead to a collision. Follow these
guidelines to make your trailer towing as safe as
possible:
•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.
(Continued)
WARNING!(Continued)
•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.
•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.
(Continued)
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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.
If you need to get under a raised vehicle, take it to
a service center where it can be raised on a lift.
•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.
CAUTION!
Do not attempt to raise the vehicle by jacking on
locations other than those indicated in the Jacking
Instructions for this vehicle.
Jack Warning Label
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WHAT TO DO IN EMERGENCIES 435

Do not raise the vehicle until you are sure the jack is
securely engaged.
3. Turn the jack screw to the left until the jack can be
placed under the jacking location. Once the jack is
positioned, turn the jack screw to the right until the
jack head is properly engaged with the lift area closest
to the wheel to be changed.
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.
4. Using the swivel wrench raise the vehicle by turning
the jack screw to the right. 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.
5. Remove the wheel nuts and pull the wheel and wheel
covers, where applicable, off the hub. Install the spare
wheel and wheel nuts with the cone shaped end of the
nuts toward the wheel. Lightly tighten the nuts.
Rear Jacking Location
438 WHAT TO DO IN EMERGENCIES

7.Finish tightening the lug nuts. Push down on the
wrench while at the end of the handle for increased
leverage. Tighten the lug nuts in a star pattern until each
lug nut has been tightened twice. Refer to “Torque
Specifications” in this section for proper lug nut torque.
8.Remove the wheel blocks and lower the jack until it is
free. Release the parking brake. Reassemble the lug
wrench to the jack assembly and stow it in the spare tire
area. Secure the assembly using the means provided.
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.
9. Place the deflated (flat) tire in the cargo area,have the
tire repaired or replaced as soon as possible.
WARNING!
A loose tire thrown forward in a collision or hard stop
could injure the occupants in the vehicle. Have the
deflated (flat) tire repaired or replaced immediately.
10. Check the spare tire pressure as soon as possible.
Correct the tire pressure as required.
11. After 25 miles (40 km) check the lug nut torque with
a torque wrench to ensure that all lug nuts are
properly seated against the wheel.
Road Tire Installation
Vehicles Equipped With Wheel Covers
1. Mount the road tire on the axle.
2.Align the valve notch in the wheel cover with the valve
stem on the wheel. Install the cover by hand. Do not use
a hammer or excessive force to install the cover.
440 WHAT TO DO IN EMERGENCIES

CAUTION!
•Do not use sling-type equipment when towing.
Vehicle damage may 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.
Without The Ignition Key
Special care must be taken when the vehicle is towed
with the ignition in the LOCK/OFF position. The only
approved method of towing without the ignition key is
with a flatbed truck. Proper towing equipment is neces-
sary to prevent damage to the vehicle.
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WHAT TO DO IN EMERGENCIES 463

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
480 MAINTAINING YOUR VEHICLE