2013 Toyota Matrix Owners Manual - Page 286
2013 Toyota Matrix Manual
Page 286 highlights
3-7. Other interior features Folding the tonneau cover STEP 1 Hold the tonneau cover with both hands. Point your thumbs in opposite directions. STEP 2 Bend one side of the cover towards you. STEP 3 Twist the other side in the opposite direction, as shown in the illustration. 306