2009 DODGE DURANGO clutch

Overdrive Operation
The automatic transmission contains an electronically
controlled fourth and fifth (if equipped) speed (OVER-
DRIVE). The transmission will automatically shift from
DRIVE to OVERDRIVE if the following conditions are
present:
•the transmission selector is in DRIVE;
•the engine coolant has reached normal operating tem-
perature;
•vehicle speed is above approximately 30 mph
(48 km/h);
•the TOW/HAUL switch has not been activated;
•transmission has reached normal operating
temperature.NOTE:If the vehicle is started in extremely cold tem-
peratures, the transmission may not shift into OVER-
DRIVE and will automatically select the most desirable
gear for operation at this temperature. Normal operation
will resume when the transmission fluid temperature has
risen to a suitable level. Refer also to the Note under
torque converter clutch, later in this section.
If the transmission temperature gets extremely hot, the
transmission will automatically select the most desirable
gear for operation at this temperature. If the transmission
temperature becomes hot enough, the “Transmission
Temperature Indicator Light” may illuminate and the
transmission may downshift out of OVERDRIVE until
the transmission cools down. After cooldown, the trans-
mission will resume normal operation.
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).
STARTING AND OPERATING 295
5

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 (usu-
ally after 1-3 miles [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 transmis-
sion is not shifting into Overdrive when cold. This is
normal. Pressing the TOW/HAUL button, when thetransmission is sufficiently warm, will demonstrate
that the transmission is 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.
•If the vehicle has not been driven in several days, the
first few seconds of operation after shifting the trans-
mission 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 con-
verter will refill within five seconds of shifting from
PARK into any other gear position.
STARTING AND OPERATING 297
5

Cav-
ityCartridge
Fuse / Re-
layMini Fuse Description
22 20 Amp
YellowNext Generation Con-
troller (NGC) Batt
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 SpareCav-
ityCartridge
Fuse / Re-
layMini Fuse Description
32 Relay Starter
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 431
7

Theft System Arming...................... 18
Theft System Disarming.................... 19
Tilt Steering Column..................... 153
Tire and Loading Information Placard......325,337
Tire Identification Number (TIN)............. 324
Tire Markings.......................... 320
Tire Safety Information.................... 320
Tires ............................74,329,470
Aging (Life of Tires).................... 335
Air Pressure.......................... 329
Chains.............................. 337
Changing............................ 379
Compact Spare........................ 332
General Information.................... 329
High Speed.......................... 331
Inflation Pressures..................... 330
Jacking............................. 381
Life of Tires.......................... 335
Load Capacity........................ 325Pressure Monitor System (TPMS)........... 340
Pressure Warning Light.................. 212
Quality Grading....................... 470
Radial.............................. 332
Replacement......................... 336
Rotation............................ 339
Safety...........................320,329
Sizes............................... 322
Snow Tires........................... 339
Spare Tire........................... 380
Spinning............................ 334
Tread Wear Indicators................... 334
Wheel Mounting...................... 381
Wheel Nut Torque..................... 386
Tongue Weight/Trailer Weight.............. 364
Torque Converter Clutch.................. 297
Tow Hooks, Emergency................... 391
Towing............................... 360
24-Hour Towing Assistance............... 101
INDEX 489
10