Is there a fault on Clk-class Mercedes indicator?

Yes, some Clk-class Mercedes models have been reported to experience issues with the indicator system, including failure to activate or malfunctioning signals. These problems can be attributed to faulty relays, electrical connections, or the multifunction switch. If you're experiencing issues, it's advisable to have the vehicle inspected by a qualified mechanic to diagnose and resolve the problem. Regular maintenance can help prevent such issues from arising.