Front door closers stopped working on1999 mercedes benz. Is there a fuse to replace?

Probably Fuse 38

It's not the best of charts
https://www.mercedesmedic.com/sl-class-r230-fuse-chart/

Fuses - Mercedes-Benz 2011 SL550 Roadster Operator's ...

https://www.manualslib.com > ... > Operator's manual
Mercedes-Benz 2011 SL550 Roadster Manual Online: Fuses. Introduction The electrical fuses in your vehicle serve to switch off malfunctioning power circuits.

Fuse Box Diagram Mercedes-Benz

https://fuse-box.info > Home > Mercedes-Benz
Fuse box diagram (location and assignment of electrical fuses and relay) for Mercedes-Benz CLS-Class (CLS220, CLS250, CLS350, CLS400, CLS500, CLS63) (W218/X218; ...

https://www.google.com/search?q=2011+Mercedes+SL550.+fuse+garage+door+controller

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check your fuses under the dash and under the hood

Check fuses!

use the owners manual to locate the fuse and replace it with same size fuse.

first check out your fuse.....may be it is broken

maybe you have to change the
Mercedes W140 Central Door Lock Vacuum Pump

sounds like the battery in the remote is old and dead and needs to be replaced. ( could also be the electric door lock fuse ).
if you are also experiencing trouble with your door locks themselves turning - then try and spray some teflon or silicone base lubrication in all the locks to wash out any dirt or debris.

c...

Check fuses.

Replace the window switch, if that doesnt work remove door panel and replace the regulator for the window.

there is an electricity fault on the system,u must check if electricity is coming on which open the valve which open the piston to open the door,or it may be the valve is not good or must be serviced