2011 Lexus HS 250h Owners Manual - Page 243
2011 Lexus HS 250h Manual
Page 243 highlights
2-4. Using other driving systems n Automatic cancellation of the pre-collision system When a malfunction occurs due to sensor contamination, etc. that results in the sensors being unable to detect obstacles, the pre-collision system will be automatically disabled. In this case, the system will not activate even if there is a collision possibility. n Obstacles not detected The sensor cannot detect plastic obstacles such as traffic cones. There may also be occasions when the sensor cannot detect pedestrians, animals, bicycles, motorcycles, trees, or snowdrifts. n If the PCS warning light turns on or flashes l If the PCS warning light begins flashing and "CHECK PCS SYSTEM" appears on the multi-information display, this indicates a malfunction in the pre-collision system. (→P. 508) l If the PCS warning light turns on and "PCS TEMPORARILY NOT AVAILABLE" appears on the multi-information display, this indicates that the grille or radar sensor is dirty. (→P. 513) 240