Mercedes Repair Questions? Ask a Mechanic for Answers ASAP
Have you got the Registration Number and I will see if I can get you a diagram.
Unfortunatly my usualy goto source does not have the required information however I have found the following webiste https://www.mercedesmedic.com/sl-class-r230-fuse-chart/
which contains some downloadable pdf files of fuse layouts.
I hope this helps