Toyota Matrix 2008 Manual page 299

a: Stop/tail and rear side marker light
b: Rear turn signal light
c: Back−up light
'08 MATRIX_U (L/O 0706)
—High mounted stoplight
Remove the clips and the cover. Removing the clips
Installing the clips
2008 COROLLA MATRIX from Aug. '07 Prod. (OM12B26U)
299