how do i check the power top fluid

first off LOVE THE CAR, rebuilt one almost completely from the ground up...every module computer, possible, (took over a year), anyway, in the trunk you may remove the panels, and bottom of trunk, you will know it is the bottom because the motor and pump will be there as well as the fluid fill, level. if you find it and still need help send me a message, but center of the trunk on the bottom to answer the question...

http://www.benzworld.org/forums/attachments/r129-sl-class/436516d1333829726t-roadster-soft-top-rst-hydraulic-system-198001448a. jpg hope this opens for you, a pic of the motor pump....