I would start by purchasing a manual for the car. After reviewing the step by step instructions, you'll have to determine whether you have the tools and mechanical skills needed to complete the job. Pop the hood and take a look around. It is not a tough job, but make sure you do your research and feel confident before you even start.

Play around with the search function at the top of the screen as well, and you should find some tips from those who have documented the job in detail.

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D.H.

04 ML500
02 E430

Experience is something you don't get until just after you need it.