Going over large bumps in convertible models may cause the roll bar to deploy, rendering the roof inoperative. Special tools are generally required to return the roll bar to its stowed position.Google+
Car Problem Reports
Mercedes-Benz CLK350 Going Over Bumps in Convertibles May Cause Roll Bar to Deploy
Mercedes-Benz CLK350 Problem
Average Mileage: 72,500 mi (45,000 mi - 100,000 mi)
Visitor, 2008 Mercedes-Benz CLK350, 100,000 mi
Ran over a half-repaired pot hole. Bumped HARD! Repair cost $131 at the dealership.