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 CLK500 Going Over Bumps in Convertibles May Cause Roll Bar to Deploy
Mercedes-Benz CLK500 Problem
Average Mileage: 45,796 mi (13,000 mi - 65,000 mi)
Visitor, 2006 Mercedes-Benz CLK500, 13,000 mi
Went over a bump; hazard lights came on and back seat headrests (and roll bar) deployed. Manual says the dealer has to fix; roof is inoperable while roll bar is deployed.
Twice going over speed bumps my hazards came on, my rear head rests came up and the top is inoperable.
Visitor, 2004 Mercedes-Benz CLK500, 64,000 mi
Not fixed. Has happened multiple times. Costs to have roll bars pushed down
Visitor, 2005 Mercedes-Benz CLK500, 30,575 mi
Mercedes-Benz CLK500 : Going Over Bumps in Convertibles cause Roll Bar to Deploy. Had to pay dealership to reset the Roll Bar.
driving hit a bumpe and the roller bar at back set came out and could not bring them back the way it was , but could not well the convertible is open and would not close the top
Visitor, 2005 Mercedes-Benz CLK500, 45,000 mi
roll bar deployed after crossing RR tracks at intersection. Dealer used a device to crank it back down into customary position.