Where is the toyota highlander obd ii port located?

The OBD II port in Your Toyota Highlander is located under the driver side of the dashboard to the left of the steering column. There is usually a small plastic cover that You will need to remove to access the plug. OBD II stands for the second generation of the On-board Diagnostics system. The first generation was introduced in 1987 with gen II takeng its place in 1996. The main purpose of these systems was to give a universal connector and communication protocol to access the data created by the different vehicle systems and sensors. Before these were created service centers and owners would need a completely different scan tool for each make of vehicle they worked on. In 1996 the system became a legal requirement if the vehicle was to be sold in the US.