Thread: 1998 C230 rain water in trunk

the ;eak is not from where the lights are. it is from the forward corner of the trunk.

If it's like my '93 R129 you will find that the third Brake light mounted on the boot/trunk-lid is the culprit. To check this as the source of the leak you can play a garden hose over the brake light. The answer is to disassemble the brake light and examine the seal, however usually just tightening the small fasteners will solve the problem.

I don't think the leak is from the Windscreen panel ... check it out probably from the boot RUBBER .... Ask someone go inside the trunk .. to check where is the leak ... you also may check the leak with soap water then , blow it with compressed air around the angle search for any bubbles ... that indicate for leaks ...