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2. Shift-by-wire - Wikipedia

   en.wikipedia.org/wiki/Shift-by-wire

   A park by wire system engages the parking pawl of a transmission using electrical means, without the traditional mechanical system which involves linkages between the gear shifter and the transmission. Park-by-wire can be considered a part of a shift by wire system, as it shifts the transmission into park mode. [1]

3. Automatic transmission - Wikipedia

   en.wikipedia.org/wiki/Automatic_transmission

   This was followed in 1937 by the Oldsmobile Automatic Safety Transmission. Similar in operation to the REO Self-Shifter, the Automatic Safety Transmission shifted automatically between the two gear ratios available in the "Low" and "High" ranges and the clutch pedal was required for standing starts. It used a planetary gearset.

4. Transmission control unit - Wikipedia

   en.wikipedia.org/wiki/Transmission_Control_Unit

   The typical modern TCU uses signals from engine sensors, automatic transmission sensors and from other electronic controllers to determine when and how to shift. [2] More modern designs share inputs or obtain information from an input to the ECU, whereas older designs often have their own dedicated inputs and sensors on the engine components.

5. Drive by wire - Wikipedia

   en.wikipedia.org/wiki/Drive_by_wire

   Shift-by-wire employs electrical or electronic connections that replace the mechanical connection between the driver's gearshift mechanism and the transmission. Since becoming commercially available in 1996, shift-by-wire has been commonly used in automated manual transmission , and has later been implemented in semi-automatic transmission and ...

6. Parking pawl - Wikipedia

   en.wikipedia.org/wiki/Parking_pawl

   The parking pawl locks the transmission's output shaft to the transmission casing by engaging a pawl (a pin) that engages in a notched wheel on the shaft, stopping it (and thus the driven wheels) from rotating. The main components of a parking pawl mechanism are the parking gear, parking pawl, actuator rod, cam collar, cam plate, pivot pin, and ...

7. Gear stick - Wikipedia

   en.wikipedia.org/wiki/Gear_stick

   Steering wheel with column-mounted gear lever in a W 120-series Mercedes-Benz 180 Column shifter for an automatic transmission in a Ford Crown Victoria. Gear sticks are most commonly found between the front seats of the vehicle, either on the center console (sometimes even quite far up on the dashboard), the transmission tunnel (erroneously called a console shifter when the floor shifter ...