There are instances where going to a higher amp fuse is acceptable. Throughout the archives here, you'll find situations where pro mechanics recommend doing so and more often than not, that recommendation is backed by a TSB(trouble service bulletin).
If there is a TSB for this situation that recommends are larger fuse - fine. If not, you need to determine the cause of the overload and stay with MB's recommended fuse size for this circuit.
Too large a fuse can allow to much current which translates into a trashed consumer(electrical that is) or worse yet, a fire.
Last edited by 1991300SEL; 06-16-2003 at 12:49 AM.