2007 JEEP GRAND CHEROKEE engine

SAFETY TIPS
Exhaust Gas
WARNING!
Exhaust gases can injure or kill. They contain carbon
monoxide (CO) which is colorless and odorless. Breath-
ing it can make you unconscious and can eventually
poison you. To avoid breathing (CO) follow the safety
tips below.
•Do not inhale exhaust gases. They contain carbon
monoxide, a colorless and odorless gas which can kill.
Never run the engine in a closed area, such as a
garage, and never sit in a parked vehicle with the
engine running for a extended period. If the vehicle is
stopped in an open area with engine running for more
than a short period, adjust the ventilation system to
force fresh, outside air into the vehicle.
•Guard against carbon monoxide with proper mainte-
nance. Have the exhaust system inspected every time
the vehicle is raised. Have any abnormal conditions
repaired promptly. Until repaired, drive with all side
windows fully open.
•Always run the climate control in panel or floor mode
when driving with any windows open, even if only
slightly, to help keep fresh air circulating inside ve-
hicle. Otherwise poisonous gases could be drawn into
the vehicle.
Safety Checks You Should Make Inside The Vehicle
Seat Belts
Inspect the belt system periodically, checking for cuts,
frays and loose parts. Damaged parts must be replaced
immediately. Do not disassemble or modify the system.
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 65
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Headlights and Parking Lights
Turn the end of the multi-function control lever to the
first detent for parking light operation. Turn to the
second detent for headlight operation. Turn to the third
detent for “Auto” headlight operation (if equipped).
Automatic Headlight System — If Equipped
Turn the end of the multi-function control lever to the
third detent to activate the automatic headlight system.
This system performs two functions. With the engine
running and the multi-function control lever in the A
(Auto) position, the headlights will turn on and off based
on the surrounding light levels.
Headlights On Automatically With Wipers
If your vehicle is equipped with Automatic Headlights it
also has this customer programmable feature. When your
headlights are in the automatic mode, and the engine is
running, they will automatically turn on when the wiper
system is on.
If your vehicle is equipped with a “Rain Sensitive Wiper
System,” and it is activated, the headlights will automati-
cally turn on after the wipers complete five wipe cycles
within approximately 1 minute, and they will turn off
approximately four minutes after the wipers completely
Headlight Switch
114 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

To Deactivate
1. Pull back on the muti-function control lever to manu-
ally deactivate the system (normal operation of high
beams).
2. Pull back on the multi-function control lever once
again to re-activate the system.
NOTE:Broken, muddy, or obstructed headlights and
taillights of vehicles in the field of view will cause
headlights to remain on longer (closer to the vehicle).
Also, dirt, film, and other obstructions (sticker, toll box,
etc.) on the windshield or camera lens will cause the
system to function improperly.
Instrument Panel and Interior Lights
When the multi-function control lever is in the parklight,
headlight, or A (Auto) position (if equipped), rotating the
center portion of the lever up and down will increase and
decrease the brightness (dimmer control) of the instrumentpanel lights. Full daytime brightness on all electronic
displays (odometer, overhead console, radio, and Auto-
matic Climate Control (if equipped) is obtained by rotating
the center portion of the control to the first detent above
the dimmer range. Rotating the control to the second
detent above the dimmer range turns the interior lights on.
Rotating the control to the “Off” (extreme bottom) position
disables all the interior lights, even when the doors and
liftgate are open. While in the “Off” position the instru-
ment panel lighting is at the lowest light level and may not
be suitable for night driving.
Daytime Running Lights — If Equipped
The high beam headlights come on at a low intensity
level whenever the engine is running, and the transmis-
sion in not in the P (Park) position. The lights remain on
until the ignition switch is turned OFF or the parking
brake is engaged. The headlight switch must be used for
normal night time driving.
116 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

CAUTION!
Do not place any article under the adjustable pedal’s
or impede its ability to move as it may cause damage
to the pedal controls. Pedal travel may become
limited if movement is stopped by an obstruction in
the adjustable pedal’s path.
ELECTRONIC SPEED CONTROL
When engaged, this device takes over accelerator opera-
tions at speeds greater than 30 mph (48 km/h) for
3.7L/4.7L engines, 25 mph (40 km/h) for 5.7L engines,
and 14 mph (23 km/h) for 3.0L diesel engines. The
controls are mounted on the steering wheel and consist of
ON·OFF, SET, RES·ACCEL, CANCEL, and DECEL con-
trols.
To Activate
Press the ON·OFF button to turn the system ON. To turn
the system OFF, press the ON·OFF button again. The
system should be turned OFF when not in use. The
CRUISE indicator light in the instrument cluster will
illuminate when the system is ON.
126 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

To Set at a Desired Speed
When the vehicle has reached the desired speed, press
and release the SET button. Release the accelerator and
the vehicle will operate at the selected speed.
To Deactivate
A soft tap on the brake pedal, normal braking, or pressing
the CANCEL button will deactivate the Speed Control
without erasing the memory. Pressing the ON·OFF to
turn the system OFF or turning off the ignition erases the
memory.
To Resume Speed
To resume a previously set speed, press and release the
RES·ACCEL button. Resume can be used at any speed
above 30 mph (48 km/h) for 3.7L/4.7L engines, 25 mph
(40 km/h) for 5.7L engines, and 14 mph (23 km/h) for
3.0L diesel engines..
To Vary the Speed Setting
When the Speed Control is ON, speed can be increased
by pressing and holding the RES·ACCEL button. When
the button is released, a new set speed will be estab-
lished.
Tapping the RES·ACCEL button once will result in a 2
mph (3 km/h) (3.7L/4.7L models) or a 1 mph (2 km/h)
(5.7L models) speed increase. Each time the button is
tapped, speed increases, so tapping the button three
times will increase speed by 6 mph (10 km/h) (3.7L/4.7L
models) or 3 mph (5 km/h) (5.7L models), etc.
To decrease speed while Speed Control is ON and SET,
press and hold the DECEL button. Release the button
when the desired speed is reached, and the new speed
will be set.
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 127
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To Accelerate for Passing
Depress the accelerator as you would normally. When the
pedal is released, the vehicle will return to the set speed.
NOTE:When driving uphill, at elevations above 2,000
feet (610 meters), or when the vehicle is heavily loaded
(especially when towing) the vehicle may slow below the
SET speed. If the vehicle speed drops below 30 mph (48
km/h) for 3.7L/4.7L engines, 25 mph (40 km/h) for 5.7L
engines, and 14 mph (23 km/h) for 3.0L diesel engines,
the Speed Control will automatically disengage. If this
happens, you can push down on the accelerator pedal to
maintain the desired speed.
Vehicles may exhibit several 4-3 downshifts under the
above conditions. To reduce the frequency of the down-
shifts and to improve vehicle performance, it is advisable
to lock out overdrive. Press the TOW/HAUL switch on
the lower center switch bank (below the Heating/Air
Conditioning controls).WARNING!
Leaving the Speed Control ON when not in use is
dangerous. You could accidentally set the system or
cause it to go faster than you want. You could lose
control and have an accident. Always leave the
system OFF when you aren’t using it.
Driving Up or Down Hills
When going up or down hills, it is possible for your
vehicle to lose or gain speed, even though the Speed
Control is engaged. The automatic transmission may also
downshift to a lower gear, to maintain speed going up or
down hills. If going down a hill steep enough to cause the
vehicle to gain speed, press the brake pedal, which will
disengage the Speed Control and help slow your vehicle.
128 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

WARNING!
ABS (Anti-Lock Brake System) cannot prevent the
natural laws of physics from acting on the vehicle,
nor can it increase the traction afforded by prevail-
ing road conditions. ABS cannot prevent accidents,
including those resulting from excessive speed in
turns, driving on very slippery surfaces, or hydro-
planing. Only a safe, attentive, and skillful driver
can prevent accidents. The capabilities of an ABS-
equipped vehicle must never be exploited in a reck-
less or dangerous manner which could jeopardize
the user’s safety or the safety of others.
TCS (Traction Control System)
This system monitors the amount of wheel spin of each of
the driven wheels. If wheel spin is detected, brake
pressure is applied to the slipping wheel(s) and engine
power is reduced to provide enhanced acceleration and
stability. A feature of the TCS system functions similar to
a limited slip differential and controls the wheel spin
across a driven axle. If one wheel on a driven axle is
spinning faster than the other, the system will apply the
brake of the spinning wheel. This will allow more engine
torque to be applied to the wheel that is not spinning.
This feature remains active even if TCS and ESP are in
either the “Partial Off” or “Full Off” modes. Refer to “ESP
(Electronic Stability Program)” in this section.
130 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

ERM (Electronic Roll Mitigation)
This system anticipates the potential for wheel lift by
monitoring the driver ’s steering wheel input and the
speed of the vehicle. When ERM determines that the rate
of change of the steering wheel angle and vehicles speed
are sufficient to potentially cause wheel lift, it applies the
appropriate brake and may reduce engine power to
lessen the chance that wheel lift will occur. ERM will only
intervene during very severe or evasive driving maneu-
vers.
ERM can only reduce the chance of wheel lift occurring
during severe or evasive driving maneuvers. It cannot
prevent wheel lift due to other factors such as road
conditions, leaving the roadway or striking objects or
other vehicles.NOTE:Anytime the ESP system is in the “Full Off”
mode, ERM is disabled. Refer to ESP (Electronic Stability
Program) for a complete explanation of the available ESP
modes.
WARNING!
Many factors, such as vehicle loading, road condi-
tions and driving conditions, influence the chance
that wheel lift or rollover may occur. ERM cannot
prevent all wheel lift or rollovers, especially those
that involve leaving the roadway or striking objects
or other vehicles. Only a safe, attentive, and skillful
driver can prevent accidents. The capabilities of an
ERM-equipped vehicle must never be exploited in a
reckless or dangerous manner which could jeopar-
dize the user’s safety or the safety of others.
132 UNDERSTANDING THE FEATURES OF YOUR VEHICLE