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S560 Faulty Thermostat Code, Dealer ran diagnostics found no cause for fault and cleared fault, Proper action?
Mercedes dealer ran diagnostics on 2020 S560 MB with a thermostat fault code with engine warning light on. Dealer advised they could not find a failure in part or system that would support faulty thermostat. Dealer cleared code and returned car with no corrective action. Asking me to drive car to see if engine warning light reappears.Is this proper procedure?
