You don't seem to be getting a lot of response here, so I will try.
Not familiar with your specific car, but my 1979 240D hood can be opened by using a very long screwdriver. You have to insert it through the grill against the release lever to which the release cable is attached. It can be seen through the grill. Push the lever to one side (as if the cable were pulling it) and the hood latch will release.
Hope this helps. Good luck.