2008 CHRYSLER ASPEN %27

The transmission will downshift from OVERDRIVE to
DRIVE if the accelerator pedal is fully depressed at
vehicle speeds above approximately 35 mph (56 km/h).
When To Use TOW/HAUL Mode
When driving in hilly areas, towing a trailer, carrying a
heavy load, etc., and frequent transmission shifting oc-
curs, press the TOW/HAUL button. This will improve
performance and reduce the potential for transmission
overheating or failure due to excessive shifting. When
operating in TOW/HAUL mode, 5th gear (if equipped) is
disabled and 2-3 and 3-4 shift patterns are modified.
Shifts into OVERDRIVE (4th gear) are allowed during
steady cruise (for improved fuel economy) and automatic
closed-throttle downshifts to 3rd gear (for improved
braking) will occur during steady braking.
The TOW/HAUL light will illuminate in the instrument
cluster to indicate when the switch has been activated.
Pressing the switch a second time restores normal opera-
tion. If the TOW/HAUL mode is desired, the button
must be pressed each time the engine is started.
TOW/HAUL Button
278 STARTING AND OPERATING

Torque Converter Clutch
A feature designed to improve fuel economy is included
in all automatic transmissions. A clutch within the torque
converter engages automatically at a calibrated speed at
light throttle. It engages at higher speeds under heavier
acceleration. This may result in a slightly different feeling
or response during normal operation in high gear. When
the vehicle speed drops below a calibrated speed, or
during acceleration, the clutch automatically and
smoothly disengages. The feature is operational in
OVERDRIVE and in DRIVE.
NOTE:The torque converter clutch will not engage
until the transmission fluid and engine coolant are warm
(usually after 1-3 mi [1.6 - 4.8 km] of driving). Because the
engine speed is higher when the torque converter clutch
is not engaged, it may seem as if the transmission is not
shifting into Overdrive when cold. This is normal. Press-
ing the TOW/HAUL button, when the transmission is
sufficiently warm, will demonstrate that the transmissionis able to shift into, and out of, Overdrive. For vehicles
with 4.7L or 5.7L engines (which have two Overdrive
gears), the transmission may not shift into 5th gear until
the transmission fluid and engine coolant are warm.
NOTE:If the vehicle has not been driven in several
days, the first few seconds of operation after shifting the
transmission into gear may seem sluggish. This is due to
the fluid partially draining from the torque converter into
the transmission. This condition is normal and will not
cause damage to the transmission. The torque converter
will refill within five seconds of shifting from PARK into
any other gear position.
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5

For example, your vehicle has a recommended cold
(parked for more than three hours) placard pressure of 33
psi (227 kPa). If the ambient temperature is 68ÉF (20ÉC)
and the measured tire pressure is 28 psi (193 kPa), a
temperature drop to 20ÉF (-7ÉC) will decrease the tire
pressure to approximately 24 psi (165 kPa). This tire
pressure is sufficiently low enough to turn on the TPMS
light. Driving the vehicle may cause the tire pressure to
rise to approximately 28 psi (193 kPa), but the TPMS light
will still be ON. In this situation, the TPMS light will turn
off only after the tires have been inflated to the vehicle's
recommended cold placard pressure value.CAUTION!
The TPMS has been optimized for the original
equipment tires and wheels. TPMS pressures have
been established for the tire size equipped on your
vehicle. Undesirable system operation or sensor
damage may result when using replacement equip-
ment that is not of the same size, type, and/or style.
Aftermarket wheels can cause sensor damage. Do not
use aftermarket tire sealants or balance beads if your
vehicle is equipped with a TPMS, as damage to the
sensors may result.
STARTING AND OPERATING 325
5

NOTE:It is particularly important for you to check the
tire pressure in all of your tires regularly and to maintain
the proper pressure.
The TPMS consists of the following components:
²Receiver module
²Four tire pressure monitoring sensors
²Tire Pressure Monitoring Telltale Lamp
The Tire Pressure Monitoring Telltale Lamp will
illuminate in the instrument cluster, and an au-
dible chime will be activated when one or more of
the four active road tire pressures are low. Should this
occur, you should stop as soon as possible, check the
inflation pressure of each tire on your vehicle, and inflate
each tire to the vehicle's recommended cold placard
pressure value. The system will automatically update
and the Tire Pressure Monitoring Telltale Lamp will
extinguish once the updated tire pressures have beenreceived. The vehicle may need to be driven for up to 10
minutes above 15 mph (25 km/h) to receive this infor-
mation.
The Tire Pressure Monitoring Telltale Lamp will flash on
and off for 75 seconds, and remain on solid when a
system fault is detected. The system fault will also sound
a chime. If the ignition key is cycled, this sequence will
repeat, providing the system fault still exists. The Tire
Pressure Monitoring Telltale Lamp will turn off when the
fault condition no longer exists. A system fault can occur
by any of the following scenarios: 1) Jamming due to
electronic devices or driving next to facilities emitting the
same radio frequencies as the TPM sensors; 2) Installing
some form of aftermarket window tinting that affects
radio wave signals; 3) Lots of snow or ice around the
wheels or wheel housings; 4) Using tire chains on the
vehicle; 5) Using wheels/tires not equipped with TPM
sensors.
STARTING AND OPERATING 327
5

CavityCartridge
Fuse /
RelayMini
FuseDescription
23 20 Amp
YellowTrailer Tow
24 15 Amp
BlueA/C Clutch
25 15 Amp
BlueStop Lamp Switch
26 Spare
27 20 Amp
YellowRun/Start Relay Feed
28 Spare
29 Relay Run Start
30 Relay Run Remote
31 Spare
32 Relay StarterCavityCartridge
Fuse /
RelayMini
FuseDescription
33 Relay Electronic Automatic
Transaxle (EATX)
34 Relay AC Clutch
35 Relay Fuel Pump Rly
36 Spare
37 Relay Stop Lamp Switch
38 Spare
39 Relay Blower Motor
40 Relay Auto Shut Down
(ASD) Rly
MAINTAINING YOUR VEHICLE 425
7

CavityCartridge
Fuse /
RelayMini
FuseDescription
10 10 Amp
RedRt Park Lamps
11 Relay Radiator Fan Hi Rly
12 20 Amp
YellowFront Control Module
(FCM) Batt #4
13 20 Amp
YellowFront Control Module
(FCM) Batt #2
14 20 Amp
YellowAdjustable Pedal
15 20 Amp
YellowFt Fog Lamps
16 20 Amp
YellowHorn
17 20 Amp
YellowRear WiperCavityCartridge
Fuse /
RelayMini
FuseDescription
18 20 Amp
YellowFront Control Module
(FCM) Batt #1
19 20 Amp
YellowLt Trailer-Tow Stop/
Turn
20 20 Amp
YellowFront Control Module
(FCM) Batt #3
21 20 Amp
YellowRt Trailer-Tow Stop/
Turn
22 30 Amp
PinkFront Control Module
(FCM) BATT # 5
23 40 Amp
GreenRadiator Fan
24 Relay Radiator Fan Lo Rly
25 Relay Ft Fog Lamps Rly
26 Relay Adjustable Pedal Rly
MAINTAINING YOUR VEHICLE 427
7

CavityCartridge
Fuse /
RelayMini
FuseDescription
27 30 Amp
GreenIgnition Off Draw
(IOD) #1
28 30 Amp
GreenIgnition Off Draw
(IOD) #2
29 Spare
30 Spare
VEHICLE STORAGE
If you are storing your vehicle for more than 21 days, we
recommend that you take the following steps to mini-
mize the drain on your vehicle's battery:
²Disconnect the Ignition Off Draw (I.O.D.) fuses located
in the Power Distribution Center (PDC). The I.O.D.
cavity includes a snap-in retainer that allows the fuse
to be disconnected without removing it from the fuse
block.
²The transfer case should be placed in the 4HI mode
and kept in this position to minimize the battery drain.
²As an alternative to the above steps you may discon-
nect the negative cable from the battery.
428 MAINTAINING YOUR VEHICLE

FLUIDS AND CAPACITIES
U.S. Metric
Fuel
4.7L, 87 Octane 27 gal 102 L
5.7L, 89 Octane 27 gal 102 L
Engine Oil (with filter)
4.7L, SAE 5W-20, API Certified 6 qts 5.7 L
5.7L, SAE 5W-20, API Certified 7 qts 6.6 L
Cooling System (includes 2.1 qts/2 L for coolant bottle
4.7L (MopartAntifreeze/Coolant 5 Year/100,000 Mile
Formula)14.2 qts 13.5 L
5.7L (MopartAntifreeze/Coolant 5 Year/100,000 Mile
Formula)16.6 qts 15.8 L
NOTE:All fluid capacities are approximate.
436 MAINTAINING YOUR VEHICLE