range will improve performance and extend transmission
life by reducing excessive shifting and heat buildup.
If the transmission temperature exceeds normal operat-
ing limits, the powertrain controller will modify the
transmission shift schedule and expand the range of
torque converter clutch engagement. This is done to
prevent transmission damage due to overheating.
If the transmission becomes extremely hot or is in danger
of overheating, the “Transmission Temperature Warning
Light” may illuminate and the transmission may operate
differently until the transmission cools down.
NOTE:
Use caution when operating a heavily loaded
vehicle at low speeds (such as towing a trailer up a steep
grade, or in stop-and-go traffic) during hot weather. In
these conditions, torque converter slip can impose a
significant additional heat load on the cooling system.
Downshifting the transmission to the lowest possible
gear (when climbing a grade), or shifting to NEUTRAL
(when stopped in heavy traffic) can help to reduce this
excess heat generation.
During cold temperatures, transmission operation may
be modified depending on engine and transmission
temperature as well as vehicle speed. This feature im-
proves warm up time of the engine and transmission to
achieve maximum efficiency. Engagement of both the
torque converter clutch and the top overdrive gear are
inhibited until the transmission fluid is warm (refer to the
“Note” under “Torque Converter Clutch” in this section).
During extremely cold temperatures (-16°F [-27°C] or
below), operation may briefly be limited to first and
direct gears only. Normal operation will resume once the
transmission temperature has risen to a suitable level.
476
STARTING AND OPERATING
Summary of Contents for 2011 grand cherokee
Page 1: ...Grand Cherokee O W N E R S M A N U A L 2 0 1 3 ...
Page 4: ......
Page 10: ...8 INTRODUCTION ...
Page 168: ...166 UNDERSTANDING THE FEATURES OF YOUR VEHICLE ...
Page 169: ...3 UNDERSTANDING THE FEATURES OF YOUR VEHICLE 167 ...
Page 170: ...168 UNDERSTANDING THE FEATURES OF YOUR VEHICLE ...
Page 239: ...Distance Setting 3 Distance Setting 2 3 UNDERSTANDING THE FEATURES OF YOUR VEHICLE 237 ...
Page 261: ...Slow Tone Fast Tone 3 UNDERSTANDING THE FEATURES OF YOUR VEHICLE 259 ...
Page 316: ...INSTRUMENT CLUSTER PREMIUM 314 UNDERSTANDING YOUR INSTRUMENT PANEL ...
Page 447: ...Operating Tips Chart 4 UNDERSTANDING YOUR INSTRUMENT PANEL 445 ...
Page 448: ......
Page 533: ...5 STARTING AND OPERATING 531 ...
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Page 703: ...INDEX 10 ...
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