Lane Keep Assist (LKA)
The Lane Keep Assist (LKA) system continuously monitors the vehicle position relative to the road markings. If the vehicle drifts from the center of the lane, and the system does not detect an obvious lane change maneuver or use of the direction indicators, the LKA will assist the driver to keep the vehicle in the current lane by applying steering wheel torque. The alert is reinforced by a graphical warning, displayed in the Instrument Cluster (IC) message center, which is used to inform the driver when the vehicle is tracking left or right of the lane markers.
The LKA system uses the Image Processing Module (IPMA) and functions the same way in which Lane Departure Warning (LDW) system works for lane tracking. The LKA can be selected on or off using the LDW switch which acts as a dual switch to differentiate between the two systems. Also LKA can be selected on or off in the IC message center.
The driver can adjust the sensitivity of the system between two levels (high or normal). The sensitivity of the warning system is adjusted via the IC message center menu. The LKA system also uses the same limitations as LDW system.
The performance of the LKA system may also be affected in the following conditions:
- During adverse driving conditions, if the camera has impaired vision, for example heavy fog, rain, snow, soiled windscreen.
- Worn, damaged or temporary lane markings, for example road works.
- Tight deviations of the roads and their gradients.
- Driving towards very bright lights/lamps, in direct sunlight.
- Driving very close to another vehicle.
In the event of a system fault, the feature is suppressed until the fault is rectified. The driver is informed by a text message and warning symbol in the IC message center.