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A power tailgate system for a vehicle includes an actuator for moving a tailgate of the vehicle between an open position and a closed position. The power tailgate system also includes a spring spaced apart from the actuator for counter-balancing a weight of the tailgate and a coupler assembly for re

A power tailgate system for a vehicle includes an actuator for moving a tailgate of the vehicle between an open position and a closed position. The power tailgate system also includes a spring spaced apart from the actuator for counter-balancing a weight of the tailgate and a coupler assembly for removably coupling the tailgate to the power tailgate system.

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1. A power tailgate system for a vehicle comprising: an actuator for moving a tailgate of the vehicle between an open position and a closed position;a spring spaced apart from the actuator for counter-balancing a weight of the tailgate; anda coupler assembly having a collar movable relative to the t

1. A power tailgate system for a vehicle comprising: an actuator for moving a tailgate of the vehicle between an open position and a closed position;a spring spaced apart from the actuator for counter-balancing a weight of the tailgate; anda coupler assembly having a collar movable relative to the tailgate along an axis of rotation of the tailgate, the collar movable axially along the axis of rotation between a locked position and an unlocked position, wherein in the locked position, the actuator is secured to the tailgate, and wherein in the unlocked position, the tailgate is removable from the vehicle and the actuator. 2. The power tailgate system of claim 1, further comprising an actuator arm assembly having a pin defining the axis of rotation and an arm having a first end rotatable about the pin. 3. The power tailgate system of claim 2, wherein the actuator is configured to rotate the first end of the arm about the pin, thereby moving the tailgate of the vehicle between the open position and the closed position. 4. The power tailgate system of claim 2, wherein the actuator has a proximal end fitting attached to the vehicle and a distal end fitting coupled to a second end of the arm of the actuator arm assembly. 5. The power tailgate system of claim 4, wherein the second end of the arm of the actuator arm assembly pivots towards the proximal end fitting of the actuator when the tailgate moves to the open position. 6. The power tailgate system of claim 4, wherein the second end of the arm of the actuator arm assembly pivots away from the proximal end fitting of the actuator when the tailgate moves to the closed position. 7. The power tailgate system of claim 2, wherein the coupler assembly includes a body fixed to the tailgate and having a slot for receiving the pin of the actuator arm assembly. 8. The power tailgate system of claim 1, wherein the collar has a slot and wherein the coupler assembly further includes a lever engagable with the slot of the collar. 9. The power tailgate system of claim 8, wherein in the first position, the lever engages the slot of the collar, thereby permitting removal of the tailgate from the vehicle. 10. The power tailgate system of claim 2, wherein the first end of the arm includes teeth and wherein the teeth are engagable with notches of the collar when the collar is in the second position, thereby preventing removal of the tailgate from the vehicle. 11. The power tailgate system of claim 1, further comprising an electronic controller in electrical communication with the actuator and configured to receive a signal for opening the tailgate or a signal for closing the tailgate. 12. The power tailgate system of claim 11, wherein the electronic controller receives the signals for opening and closing the tailgate from a fob. 13. The power tailgate system of claim 11, wherein the electronic controller is configured to detect if the tailgate is coupled to the power tailgate system. 14. A coupler assembly for removably attaching a tailgate to a vehicle comprising: a body fixed to the tailgate and having a slot for receiving a portion of the vehicle;a collar positioned about the body and movable axially between a first position permitting removal of the tailgate from the vehicle and a second position preventing removal of the tailgate from the vehicle. 15. The coupler assembly of claim 14, further comprising a lever and wherein the collar includes a slot engagable with the lever when the collar is located in the first position. 16. The coupler assembly of claim 15, wherein the lever is movable, thereby allowing the collar to move between the first position and the second position. 17. The coupler assembly of claim 16, wherein the lever is movable by a spring. 18. The coupler assembly of claim 14, wherein the slot of the body receives the portion of the vehicle when the collar is located in the second position. 19. The coupler assembly of claim 14, wherein the collar includes notches for receiving a second portion of the vehicle when the collar is located in the second position.