A repetitive clicking noise from behind the center area of the dash panel is usually caused by a broken stepper motor actuating arm. The actuating arm controls the direction of air flow in the climate control system. Disassembly of the center console will be required to access and change the broken arm with the updated, reinforced part.
Car problem reports
Problem with your car? See what our experts say or submit your own.
Most reported Mercedes-Benz CLK350 problems
Mercedes M272/M273 [V6 and V8] intake manifold fault, flapper controlling arm breaks causing car to hesitate and malfunction. Throws numerous codes and check engine light
Mercedes dealer fix, replace the complete intake manifold. very expensive repair.
DIY fix replace the control arm only and not the complete intake manifold, available from alternate sources[non-Mercedes].