2015 Buick LaCrosse Owner Manual - Page 134

Instruments and Controls If the ABS light is the only light on, the vehicle has regular brakes, but the antilock brakes are not functioning. If both the ABS and the brake system warning light are on, the vehicle's antilock brakes are not functioning and there is a problem with the regular brakes. See your dealer for service. See Brake System Warning Light on page 5-19 and Brake System Messages on page 5-36. This light changes to amber and flashes to indicate that the lane marking has been crossed without using a turn signal in that direction. See Lane Departure Warning (LDW) on page 9-57. 5-21 Traction Off Light Vehicle Ahead Indicator This light comes on briefly while starting the engine. If it does not, have the vehicle serviced by your dealer. If the system is working normally, the indicator light then turns off. If equipped, this indicator will display green when a vehicle is detected ahead and amber when you are following a vehicle ahead much too closely. See Forward Collision Alert (FCA) System on page 9-50. The traction off light comes on when the Traction Control System (TCS) has been turned off by pressing and releasing the TCS/StabiliTrak button. This light and the StabiliTrak OFF light come on when StabiliTrak is turned off. If the TCS is off, wheel spin is not limited. Adjust driving accordingly. See Traction Control/Electronic Stability Control on page 9-34. Lane Departure Warning (LDW) Light This light is green if LDW is on and ready to operate.