Changing your own hood shock or strut is a great and easy way to get started on DIY, or "Do It Yourself" projects. It should take you less than 30 minutes to replace the shock and you could save over a hundred dollars from what a shop might charge. The only thing you really need to worry about is you will need to have a friend hold the hood up or brace the hood in the up position something sturdy. The hood is surprisingly heavy and you do not want it falling on you when you are working.
Begin by raising the hood to the full up and locked, or service position. If the shock is worn out you will need to brace it securely or have someone hold it up for you.
It's the same on our SLK250. The front one is easy to see. The rear ones are more visible if you put the hood in "service" position - just keep pushing it open farther and it rests at a second, wider opening.