The ornamental design for a vehiclefrontlightunit, as shown and described.
FIG. 1 is perspective view from the front right of a vehicle front light unit. The drawings and descriptions represent the left side embodiment. The design also contemplates a mirror symmetrical embodiment on the right side of the vehicle. The dash line included denotes environment and is not part of the claimed design
FIG. 2 is a front elevation view thereof;
FIG. 3 is a right elevation view thereof, and
FIG. 4 is a top view thereof; and,
FIG. 5 is an exploded perspective view from the front right thereof.