2006 JEEP GRAND CHEROKEE heating

4 - Way Passenger’s Power Seat—If Equipped
The front passenger’s power seat switches are located on
the outboard side of the passenger seat lower side trim.
The bottom switch controls forward/rearward adjust-
ment. The top switch controls the seatback recline adjust-
ment.
NOTE:The 4 - way seat does not have an up/down
adjustment.
Heated Seats—If Equipped
Heated seats provide comfort and warmth on cold days
and can help soothe sore muscles and backs. The heaters
provide the same heat level for both cushion and back.
The front driver and passenger seats are heated. The
controls for each heater are located near the bottom
center of the instrument panel. After turning on the
ignition, you can choose from High, Off, or Low heat
settings. Amber LEDs in the top portion of each switchindicate the level of heat in use. Two LEDs are illumi-
nated for high, one for low, and none for off. Pressing the
switch once will select high-level heating.
Pressing the switch a second time will select low-level
heating. Pressing the switch a third time will shut the
heating elements off.
Heated Seat Switches
110 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

When high-temperature heating is selected, the heaters
provide a boosted heat level during the first four minutes
of operation after heating is activated. The heat output
then drops to the normal high-temperature level. If
high-level heating is selected, the system will automati-
cally switch to the low level after two hours of continu-
ous operation. At that time, the number of illuminated
LEDs changes from two to one, indicating the change.
Operation on the low setting also turns off automatically
after two hours.
NOTE:Once a heat setting is selected, heat will be felt
within two to five minutes.
60/40 Split Rear Seat
To Lower Rear Seat
Either side of the rear seat can be lowered to allow for
extended cargo space and still maintain some rear seating
room.NOTE:Be sure that the front seats are fully upright and
positioned forward. This will allow the rear seatback to
fold down easily.
1. Pull the release strap (toward the front of the vehicle)
to release.
Rear Seat Release
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 111
3

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 25 mph (40
km/h) for 5.7L models, or 30 mph (48 km/h) for 3.7L/
4.7L models, the Speed Control will automatically disen-
gage. If this happens, you can push down on the accel-
erator 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.
150 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

Canadian Programming/Gate Programming
Canadian radio-frequency laws require transmitter sig-
nals totime-out(or quit) after several seconds of
transmission which may not be long enough for
HomeLink to pick up the signal during programming.
Similar to this Canadian law, some U.S. gate operators are
designed totime-outin the same manner.
If you live in Canada or you are having difficulties
programming a gate operator by using theProgram-
mingprocedures (regardless of where you live),replace
Programming HomeLinkstep 3with the following:
NOTE:If programming a garage door opener or gate
operator, it is advised to unplug the device during the
cyclingprocess to prevent possible overheating.
3. Continue to press and hold the HomeLink button
while youpress and release every two seconds(cycle)
your hand-held transmitter until the frequency signal has
successfully been accepted by HomeLink. The EVICdisplay will show“CHANNEL X TRAINED”(where X is
Channel 1, 2, or 3). Proceed withProgrammingstep
four to complete.
Using HomeLink
To operate, simply press and release the programmed
HomeLink button. Activation will now occur for the
trained device (i.e. garage door opener, gate operator,
security system, entry door lock, home/office lighting,
etc.). For convenience, the hand-held transmitter of the
device may also be used at any time. In the event that
there are still programming difficulties or questions,
contact HomeLink at:www.homelink.com or 1-800-355-
3515.
Erasing HomeLink Buttons
To erase programming from the three buttons (individual
buttons cannot be erased but can bereprogrammed-
note below), follow the step noted:
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 157
3

CLIMATE CONTROLS
Climate Controls—Manual
Air Conditioning
The controls for the heating/air conditioning and venti-
lation system in this vehicle consist of a series of rotary
knobs. These comfort controls can be set to obtain desired
interior conditions.
The instrument panel features four dual-vane airflow
registers. Two registers are located on the outer ends of
the instrument panel and two are located in the center of
the instrument panel. These registers can be closed to
partially block airflow, and they can be adjusted to direct
airflow where the occupant desires.Press this button to turn on and off the air condi-
tioning. Cool dehumidified air comes through the
outlets selected by the mode selector. Press the
button a second time to turn off the air conditioning. The
button includes an LED that illuminates when compres-
sor operation is selected.
Manual Air Conditioning and Heating Controls
UNDERSTANDING YOUR INSTRUMENT PANEL 233
4

Panel
Air flows through the outlets located in the instru-
ment panel. Air flows through the registers in the
back of the center console to the rear seat passengers.
These registers can be closed to block airflow.
Recirculation
The recirculation feature can be selected with
the mode control knob. You may choose be-
tween Bi-Level Recirculation and Panel Recir-
culation air outlets while in this mode. Nor-
mally, air enters from outside the vehicle. However, when
in Recirculation mode air inside the vehicle is re-used.
Use this mode to rapidly cool the inside of the vehicle.
The Recirculation mode can also be used to temporarily
block out outside odors, smoke, and dust.Window Fogging
Interior fogging on the windshield can be quickly re-
moved by turning the mode selector to Defrost, and
turning on the high blower. The Defrost/Floor mode can
be used to maintain a clear windshield and provide
sufficient heating. If side window fogging becomes a
problem increase blower speed. Vehicle windows tend to
fog on the inside in mild but rainy or humid weather.
NOTE:Recirculate without A/C should not be used for
long periods as fogging may occur.
236 UNDERSTANDING YOUR INSTRUMENT PANEL

LO AUTO position should be used for front seat occu-
pants only. The HI AUTO position should be used when
more air flow is desired, or when rear seat occupants are
present. Dial in the comfort setting you would like the
system to maintain by rotating the driver’s or passenger’s
control knob. Once the comfort level is selected the
system will maintain that level automatically using the
heating system. Should the desired comfort level require
air conditioning, the system will automatically make the
adjustment.
You will experience the greatest efficiency by simply
allowing the system to function automatically. Selecting
the OFF position on the fan control stops the system
completely.
NOTE:The temperature setting can be adjusted at any
time without affecting automatic control operation. How-
ever, if the driver and/or passenger temperature knobs
are set to the full hot or full cold positions, the airtemperature out of the ducts will be full hot or full cold
respectively. With the temperature setting in these posi-
tions, the system does not attempt automatic comfort
control.
The air conditioning in this system is automatic.
Pressing this button while in AUTO mode will
cause the LED to flash three times and remain off.
This indicates that the system is in AUTO and requesting
the air conditioning is not necessary.
The system will automatically control recircu-
lation. However, pressing this button will tem-
porarily put the system in recirculation mode.
This can be used when outside conditions such
as smoke, odors, dust, or high humidity are present. This
will cause the LED to illuminate.
NOTE:
•The surface of the climate control panel, and the top
center of the instrument panel should be kept free of
UNDERSTANDING YOUR INSTRUMENT PANEL 239
4

This button can be used to block out smoke,
odors, dust, high humidity, or if rapid cooling
is desired. The recirculation mode should only
be used temporarily. The button includes an
LED that illuminates, which indicates that the recircula-
tion mode is active. You may use this feature separately.
NOTE:Extended use of recirculation may cause the
windows to fog. If the interior of the windows begins to
fog, press the“Recirculate”icon button to return to
outside air. Some temp./humidity conditions will cause
captured interior air to condense on windows and ham-
per visibility. For this reason, the system will not allow
“Recirculate”to be selected while in the defrost or
defrost/floor modes. Attempting to use the recirculation
while in these modes will cause the LED in the button to
blink and then turn off.Summer Operation
The engine cooling system in air conditioned vehicles
must be protected with a high-quality antifreeze coolant
to provide proper corrosion protection and to protect
against engine overheating. A 50% solution of ethylene
glycol antifreeze coolant in water is recommended. Refer
to“Maintenance Procedures”in Section 7 of this manual
for proper coolant selection.
Winter Operation
Use of the air Recirculation mode during winter months
is not recommended because it may cause window
fogging.
NOTE:Refer to the“Operating Tips”chart (for Manual
A/C Control) in this section for suggested control set-
tings in different weather conditions.
244 UNDERSTANDING YOUR INSTRUMENT PANEL