Door Ajar Light
Buick LaCrosse / Buick LaCrosse Owners Manual / Instruments and Controls / Warning Lights, Gauges, and Indicators / Door Ajar Light

This light comes on in the Driver Information Center (DIC) when a door is open or not securely latched.
Before driving, check that all doors are properly closed.
See also:
Security Light
The immobilizer light should come on briefly as the engine is started.
If it does not come on, have the vehicle serviced by your dealer.
If the system is working normally, the indicator light turn ...
Cleaning Exterior Lamps/Lenses
Use only lukewarm or cold water, a soft cloth and a car
washing soap to clean exterior lamps and lenses. Follow
instructions under Washing Your Vehicle. ...
Horn
Press on the steering wheel
pad to sound the horn. ...
