Guide Rails, Cleaning And Lubricating.

Courtesy of AUDI OF AMERICA, LLC

-- Open the sunroof shade completely.

-- Open the glass panel all the way.

-- First remove any loose dirt residue from the guide rail using an industrial vacuum cleaner.

-- Remove the grease and dirt residue on the guide rail with a lint-free cloth.

-- Apply lubricant on the outer guide rail -arrow-.

Courtesy of AUDI OF AMERICA, LLC

-- Apply lubricant on the inner guide rail -arrow-.

-- Remove the excess lubricant from the guide rails with a lint-free cloth.

-- Repeat the procedure on the other side of the vehicle.