Contour L4-122 2.0L CNG DOHC VIN Z SFI (1996)
Overdrive Switch: Description and Operation
A transmission control switch in the shift knob operates as follows:
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The system automatically engages the overdrive (O/D) mode each time the ignition switch is turned to RUN.
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Pressing the transmission control switch (TCS) with the ignition switch in RUN locks out the overdrive mode and illuminates the OVERDRIVE
OFF lamp.
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Pressing the TCS again reverts to the (O/D) mode.