2011 Buick Lucern Owner's Manual - Page 26

Lane Departure Warning (LDW) For vehicles with LDW, it is intended to help avoid lane change collisions. It provides a warning if the vehicle is crossing a lane without using a turn signal. LDW uses a camera to detect the lane markings. It only operates at speeds of 56 km (35 mph) or greater. The warning symbol @, located in the instrument panel cluster, appears green if a lane marking is detected. It changes to amber, flashes, and sounds three chimes if the vehicle crosses a detected land marking and the turn signal is not on. Side Blind Zone Alert (SBZA) For vehicles with this feature, it may alert you to vehicles located in your side blind zone. When the system detects a vehicle in the side blind zone, an SBZA display will light up in the corresponding outside side mirror indicating that it may not be safe to change lanes. The system is enabled at every vehicle startup. It can be disabled through the Driver Information Center (DIC). If the message SIDE BLIND ZONE SYS. UNAVAILABLE appears on the DIC, the system has been disabled because the sensor is blocked and cannot detect vehicles in the blind zone. The sensors, located behind the rear quarter panels, may be blocked by mud, dirt, snow, ice, slush, or even heavy rainstorms. The vehicle does not need service. See Side Blind Zone Alert (SBZA) on page 3 ‑ 36 for more information. To turn LDW on and off, press the LDW button, located by the exterior headlamp control. See Lane Departure Warning (LDW) on page 3 ‑ 40 for more information. 1-20