How do you jump a 1999 Clk 320 Mercedes when you cant get to he battery in the trunk?

To jump a 1999 CLK 320 Mercedes when you can't access the battery in the trunk, locate the auxiliary jump start terminal under the hood, usually near the driver's side. Use a set of jumper cables, connecting the red cable to the positive terminal on the jump start terminal and the other end to the positive terminal of the donor battery. Connect the black cable to the donor battery's negative terminal, and then attach the other end to a solid ground point on the engine block or chassis of your car. Start the donor vehicle, then attempt to start your Mercedes.