Diagnostic Aids

WARNING: This page is about a different car, the 2016 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.

Certain factors will affect the operation of the lane keep assist system. When the system is operating properly, the indicator will illuminate on the instrument cluster. This indicates that all of the required operating conditions to permit lane keep assist have been met. The indicator will not appear when the system is having difficulty seeing the lines on the road or if the view of the frontview camera is blocked with mud, dirt, snow, ice or slush, if the windshield is damaged or when weather limits visibility, such as while driving in fog, rain or snow conditions. This is normal operation, the vehicle does not need service. Additionally, lane keep assists may occasionally occur in a properly operating vehicle due to tar marks, shadows, cracks in the road or other road imperfections. This is normal system operation and the vehicle does not require service. The driver information center may also display Lane Departure System Unavailable due to the temporary conditions listed above.

Additionally, the Frontview Camera Disable History can give useful hints about what affected the operation of the lane keep assist system. For the Frontview Camera Disable History, refer to DTC B1011 .