P0579 MERCEDES-BENZ – Cruise Control Multifunction Input ‘A’ Circuit Range/Performance

P0579 MERCEDES-BENZ Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light),Cruise control system inoperative

P0579 MERCEDES-BENZ Possible Causes

Faulty Cruise Control Multifunction Switch,Cruise Control Multifunction Switch harness is open or shorted,Cruise Control Multifunction Switch circuit poor electrical connection

P0579 MERCEDES-BENZ Description

The Engine Control Module (ECM) monitors the Cruise Control Multi-Function Input ‘A’. The ECM sets the OBDII code when the Cruise Control Multi-Function Input ‘A’ is not to factory specifications.