Mauger insists little should be read into the switches.
He said Dickson warrants a first appearance of the season through some impressive performances for the Highlanders A team.
It is a fifth New Zealand derby match out of five to start the season for the Highlanders, who share the same three win-one loss record as their opponents.
"As a group we are under no illusions as to the challenge this week," Mauger said.
"The Chiefs are an in-form side playing in front of their home crowd so it ought to be another great tussle."
Highlanders: Ben Smith (co-capt), Waisake Naholo, Matt Faddes, Rob Thompson, Tevita Li, Lima Sopoaga, Aaron Smith, Luke Whitelock, Dillon Hunt, Elliot Dixon, Josh Dickson, Jackson Hemopo, Tyrel Lomax, Ash Dixon (co-capt), Daniel Lienert- Brown.
Reserves: Greg Pleasants-Tate, Aki Seiuli, Tyrel Lomax, Tom Franklin, Shannon Frizell, Josh Renton, Fletcher Smith, Patelesio Tomkinson.
- NZN