One problem related to horn assembly has been reported for the 2009 Buick Lacrosse. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2009 Buick Lacrosse based on all problems reported for the 2009 Lacrosse.
Multiple times since purchase air bag indicator has either blinked, has been constantly on or hasn'¿¿t been on at all. Instrument panel display, mileage indicator, temperature display, trip indicator hasn'¿¿t worked on occasion, radio and/or interior temperature display doesn'¿¿t come on until you drive for five to forty five minutes. Door locks have actuated either up or down while driving. Remote door locks either don¿t work at all or one or more does, one or more doesn¿t work, when manually using a key security system has activated thus sounding the horn. Many of these items have been discussed with my dealer and we were told by them that gm is aware of the problem but there isn'¿¿t a fix at this time.