I was totally puzzled by the same problem - - followed the Owner's Manual instructions explicitly to no avail. Problem is - - there are two (2!) DISP buttons - - a prominent one on the dashboard - - a less prominent one on the steering wheel. It's the steering wheel one that you want to press and hold to access the clock reset functions. (Then make a note in your Owner's Manual that it's the DISP button on the steering wheel.)
The 2012 Toyota Highlander has 16 valves.
The 2012 Toyota Highlander is a gas-powered vehicle.
The 2012 Toyota Highlander has an inline 4 engine.
The 2012 Toyota Highlander-Hybrid has 24 valves.
The maximum payload of the 2012 Toyota Highlander is 1554 lbs..
The 2012 Toyota Highlander has a drag coefficient of 0.34 Cd.
The 2012 Toyota Highlander's turning circle is 38.7 ft..
The 2012 Toyota Highlander has a 6-speed shiftable automatic.
The 2012 Toyota Highlander-Hybrid has a V6 engine.
The 2012 Toyota Highlander has a 22.0 degrees angle of approach.
The 2012 Toyota Highlander is 15 ft. 8.4 in. (188.4 in.) long.
The 2012 Toyota Highlander has a 23.0 degrees angle of departure.