Results. We found an apparent 11.7 +/- 0.5 yr cycle in the mean brightness. The mean of the individual photometric rotation periods is 7.24 +/- 0.22 days. The lower limit for the differential rotation coefficient is vertical bar k vertical bar > 0.12, assuming that period changes in V352 CMa follow the solar pattern. The Kuiper method detected stable, active longitudes rotating with a period of 7.157 +/- 0.002 days, from the epochs of light minimum, but these structures vanished after the year 2009. CPS performed better than the traditional PSM, because the latter assumes a sinusoidal model for the data even when this was not correct.