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This switch changes the behaviour of the automatic transmission; in the Power position, the transmission will shift up and down at higher engine speeds. In the comfort position, the upshift points will be limited, i.e. at Wide Open Throttle the shifts will not be at maximum engine RPM as they will be in Power position. The easiest way to demonstrate this is to drive on a highway at approximately 45MPH (70KPH) and force a kickdown (press the gas pedal to the floor). In Comfort mode, the transmission will shift down into third gear from fourth; in Power mode it will shift down into second gear. The difference is very noticeable. From 1991 onwards, the switch connection at the Transmission Control Unit (TCU) was hardwired in Power mode - no switch.

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