Mercedes-Benz CL203, CLK209, CLA209 (cab), W211 & S211 (wagon)
What the hazard is
Safety equipment malfunction.
What to do
Contact your authorised Mercedes/Benz Dealer to make arrangements to have the relevant seat belt buckles replaced free of charge.
Defect
It is possible that the tongue of the seat belt may not fully engage in the seat belt buckle.