Three soldiers were hospitalized in moderate condition and a fourth in light condition; the fifth soldier was released overnight.
The wounded team, which belongs to the Home Front Command, seems to have been surprised by the ramming car while busy examining something near the check point.
The hitting driver fled the scene but was arrested along with his father when he arrived in a check point run by a reserve team later that night.
Initial interrogation shows the father of the driver wasn't in the car with him during the attack.
Rescue forces received a phone call at 10:57pm Saturday saying that several people were wounded in a car-ramming attack.
Magen David Adom paramedics said they arrived at the scene and treated one man in moderate condition, a 20-year-old woman in moderate condition and two 20-year-old men who were lightly wounded.
Earlier Saturday night a Palestinian driver tried to run over a policeman near Hazofim Square in the Samaria region in the west Bank; no one was hurt, and the driver fled the scene. Security forces initiated a search for the suspect but wasn't yet found.