The soft top will not raise. The light only blinks. Is it the hydraulics? on 1999 Mercedes-Benz SL600

Where is the hydraulic fuel level? Under the spare tire? Evan with the engine on the soft top switch only blinks & the soft top motor does not make any noise. At first try it did make a noise but after that the light only blinks and there is no noise coming from the soft top compartment I hope it is not the hydraulics. I have not had the hard top off for a couple of years.

Asked by for the 1999 Mercedes-Benz SL600