while towing heavy trailers), use the Electronic Range
Select (ERS) shift control (refer to ⬙Electronic Range Select
(ERS) Operation⬙ in this section) to select a lower gear
range. Under these conditions, using a lower gear range
will improve performance and extend transmission life
by reducing excessive shifting and heat buildup.
If the transmission operating temperature exceeds nor-
mal operating limits, the transmission controller may
modify the transmission shift schedule, reduce engine
torque, and/or expand the range of torque converter
clutch engagement. This is done to prevent transmission
damage due to overheating.
If the transmission becomes extremely hot, the “Trans-
mission Temperature Warning Light” may illuminate and
the transmission may operate differently until the trans-
mission cools down.
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 the torque
converter clutch, and shifts into 8th or 9th gear, are
inhibited until the transmission fluid is warm (refer to the
“Note” under “Torque Converter Clutch” in this section).
Normal operation will resume once the transmission
temperature has risen to a suitable level.
SPORT — IF EQUIPPED
This mode alters the transmission’s automatic shift
schedule for sportier driving. Upshift speeds are in-
creased to make full use of available engine power.
SPORT mode is activated using the rotary switch on the
center console. Refer to ⬙Selec-Terrain⬙ in this section for
further information.
5
STARTING AND OPERATING 427
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