JEEP PATRIOT 2007 1.G Owners Manual

improved traction capability off-road. It also, turns on
other system features in conjunction with L Off-Road
mode.
²Unique Engine Calibration± When the system has
the 4WD lock lever engaged and is in the Low
Off-Road mode or reverse, the engine calibration
changes to run higher spark advance with premium
fuel for optimum off-road performance. Your vehicle is
equipped with an active spark knock system and can
adjust the engine calibration for varying range of fuel
octane levels.
High Mobility Characteristics
The Patriot with the Freedom Drive II Off-Road package
has high off-road mobility characteristics with an ap-
proach angle A= 29 degrees, a break-over angle B= 23
degrees, a running ground clearance C= 9 ins. (23 cm), a
departure angle D= 33 degrees, and a turning circle of
35.6 ft. (11 m).
250 STARTING AND OPERATING

Angles A B C D
STARTING AND OPERATING 251
5

Water Fording Characteristics
Water Fording Characteristics is the vehicle's ability to
cross a body of still water, where the powertrain and
drivetrain are safe from water ingestion. The Patriot with
the Freedom Drive II Off-Road package has high waterfording characteristics with the ability to cross a pool of
water, without stopping, 19 ins. (48 cm) deep at a
maximum speed of 5 mph (8 km/h) with an entrance
ramp angle of 1.3 degrees.
252 STARTING AND OPERATING

Water Fording Characteristics
STARTING AND OPERATING 253
5

The Basics of Off-Road Driving
You will encounter many types of terrain driving off-
road. You should be familiar with the terrain and area
before proceeding. There are many types of surface
conditions: hard packed dirt, gravel, rocks, grass, sand,
mud, snow and ice. Every surface has a different effect on
your vehicle's steering, handling and traction. Control-
ling your vehicle is one of the keys to successful off-road
driving, so always keep a firm grip on the steering wheel
and maintain a good driving posture. Avoid sudden
accelerations, turns or braking. In most cases there are no
road signs, posted speed limits or signal lights. Therefore
you will need to use your own good judgment on what is
safe and what isn't. When on a trail you should always be
looking ahead for surface obstacles and changes in
terrain. The key is to plan your future driving route while
remembering what you are currently driving over.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 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
254 STARTING AND OPERATING

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.
Simultaneous Brake And Throttle Operation
Many off-road driving conditions require the simulta-
neous use of the brake and throttle (two footed driving).
When climbing rocks, logs, or other stepped objects,
using light brake pressure with light throttle will keep the
vehicle from jerking or lurching. This technique is also
used when you need to stop and restart a vehicle on a
steep incline.
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.
²Snow± In heavy snow or for additional control and
traction at slower speeds, activate the 4WD Lock and
shift the transmission to a low (L Off-Road) if neces-
sary. Don't shift to a lower gear than necessary to
maintain headway. Over-revving the engine can spin
the wheels and traction will be lost. If you start to slow
to a stop, try turning your steering wheel no more than
a 1/4; turn quickly back and forth, while still applying
throttle. This will allow the tires to get a fresh9bite9
and help maintain your momentum.
STARTING AND OPERATING 255
5

CAUTION!
On icy or slippery roads, do not downshift at high
engine rpm's or vehicle speeds because engine brak-
ing may cause skidding and loss of control.
²Mud± Deep mud creates a great deal of suction
around the tires and is very difficult to get through.
You should use low (L Off-Road) with the 4WD Lock
engaged and maintain your momentum. If you start to
slow to a stop, try turning your steering wheel no
more than a 1/4; turn quickly back and forth for
additional traction. Mud holes pose an increased
threat of vehicle damage and getting stuck. They are
normally full of debris from previous vehicles getting
stuck. As a good practice before entering any mudhole, get out and determine how deep it is, if there are
any hidden obstacles and if the vehicle can be safely
recovered if stuck.
²Sand± Soft sand is very difficult to travel through
with full tire pressure. When crossing soft sandy spots
in a trail maintain your vehicle's momentum and do
not stop. The key to driving in soft sand is to use the
appropriate tire pressure, accelerating slowly, avoid-
ing abrupt maneuvers and maintaining the vehicle's
momentum. If you are going to be driving on large soft
sandy areas or dunes, reduce your tire pressure to a
minimum of 15 psi (103 kPa) to allow for a greater tire
surface area. You should use low (L Off-Road) with the
4WD Lock engaged and ESP turned off. Reduced tire
pressure will drastically improve your traction and
handling, while driving on the soft sand, but you must
return the tires to normal air pressure before driving
256 STARTING AND OPERATING

on pavement or other hard surfaces. Be sure you have
a way to air the tires back up prior to reducing the
pressure.
CAUTION!
Reduced tire pressures may cause tire unseating and
total loss of air pressure. To reduce the risk of tire
unseating, while at a reduced tire pressure, reduce
your speed and avoid sharp turns or abrupt
maneuvers.
Crossing Obstacles (Rocks And Other High
Points)
While driving off road, you will encounter many types of
terrain. These varying types of terrain bring different
types of obstacles. Before proceeding review the path
ahead to determine the correct approach and your ability
to safely recover the vehicle if something goes wrong.Keeping a firm grip on the steering wheel, bring the
vehicle to a complete stop and then inch the vehicle
forward until it makes contact with the object. Apply the
throttle lightly while holding a light brake pressure and
ease the vehicle up and over the object.
WARNING!
Crossing obstacles can cause abrupt steering system
loading which could cause you to loose control of
your vehicle.
Using A Spotter
There are many times where it is hard to see the obstacle
or determine the correct path. Determining the correct
path can be extremely difficult when you are confronting
many obstacles. In these cases have someone guide you
over, through, or around the obstacle. Have the person
STARTING AND OPERATING 257
5

stand a safe distance in front of you where they can see
the obstacle, watch your tires and undercarriage, and
guide you through.
Crossing Large Rocks
When approaching large rocks, choose a path which
ensures you drive over the largest of them with your
tires. This will lift your undercarriage over the obstacle.
The tread of the tire is tougher and thicker than the side
wall and is designed to take the abuse. Always look
ahead and make every effort to cross the large rocks with
your tires.
CAUTION!
Never attempt to straddle a rock that is large enough
to strike your axles or undercarriage.
CAUTION!
Never attempt to drive over a rock which is large
enough to contact the door sills.
Crossing A Ravine, Gully, Ditch, Washout Or Rut
When crossing a ravine, gully, ditch, washout or a large
rut, the angled approach is the key to maintaining your
vehicle's mobility. Approach these obstacles at a 45-
degree angle and let each tire go through the obstacle
independently. You need to use caution when crossing
large obstacles with steep sides. Do not attempt to cross
any large obstacle with steep sides at an angle great
enough to put the vehicle at risk of a roll over. If you get
caught in a rut, dig a small trench to the right or left at a
45-degree angle ahead of the front tires. Use the removed
258 STARTING AND OPERATING

dirt to fill the rut ahead of the turnout you just created.
You should now be able to drive out following the trench
you just created at a 45-degree angle.
WARNING!
There is an increased risk of roll over when crossing
an obstacle, at any angle, with steep sides.
Crossing Logs
To cross a log, approach it at a slight angle (approxi-
mately 10 to 15 degrees). This allows one front tire to be
on top of the log while the other just starts to climb the
log. While climbing the log, modulate your brake and
accelerator to avoid spinning the log out from under your
tires. Then ease the vehicle off the log using your brakes.
CAUTION!
Do not attempted to cross a log with a greater
diameter than the running ground clearance or the
vehicle will become high centered.
Getting High Centered
If you get hung up or high centered on an object, get out
of the vehicle and try to determine what the vehicle is
hung up on, where it is contacting the underbody and
what is the best direction to recover the vehicle. Depend-
ing on what you are in contact with, jack the vehicle up
and place a few rocks under the tires so the weight is off
of the high point when you let the vehicle down. You can
also try rocking the vehicle or winching the vehicle off
the object.
STARTING AND OPERATING 259
5