LKAS is an abbreviation of Lane Keeping Assist System. LKAS is a device that maintains the vehicle within a lane by detecting the lane via a camera, calculating the vehicle position and the steering force required to lead the vehicle into a safe zone, and controlling MDPS with the calculated results. The system consists of a LKAS unit, cluster, MDPS and On/Off power switch. The main components of the device are CMOS Image Sensor (CIS), Digital Signal Processor (DSP) and Micro Control Unit (MCU; CPU).

LKAS ECU monitors the internal software to see if it works properly. If there is a fault in the software, such as an error occurring during Flash programming or abnormal system shut-down, ECU generates the fault code C1606 and turns on the Malfunction Indicator Lamp.