The home team had to withstand a strong fightback from the Jaguares in the second half and could only score two Josh Ioane penalties in the second half.
It was very tight at the end but the Highlanders managed to hang on and the Jaguares indiscipline cost them in the end.
The Highlanders kicked the ball more than expected and the Jaguares were rugged and tough in the collision.
Best for the Highlanders were hooker Coltman, lock Josh Dickson and first five-eighth Ioane.
The side is set to leave for South Africa tomorrow morning with doubts over the availability of forwards Liam Squire and Jackson Hemopo.
Highlanders 32 (James Lentjes, Matt Faddes, Sio Tomkinson, Liam Coltman tries; Josh Ioane 3 con, 2 pen) Jaguares 27 (Matias Moroni, Marcos Kremer, Ramiro Moyano tries; Joaquim Diaz Bonilla 3 con, 2 pen) Halftime: 26-13 Highlanders