Questions about aluminum siding repairs

I have a house with about 30 year old aluminum siding which needs a little sprucing up. In one area are the remains of some ivy (the brown "root" part the plant uses to hold onto a surface), and in several other areas the finish has been "buffed" by overgrown shrubs which were allowed to grow too large. I do not want to completely refinish the siding, just improve the appearance in these areas. Any ideas? Also, in a place or 2 there are dents, which would be easily banged out to at least minimize them if I could get the sections off intact & get to the reverse side for some hammering, but I have no idea how this stuff is attached. Suggestions appreciated
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file
Upload is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.