Car is parked, engine & all accessories off for as long as 2 or 3 hours. Suddenly the horn will start blowing & the lights will begin flashing.
Chevrolet Q&AAsk Your Question
2006 Chevrolet Malibu Maxx Question: How can I prevent the anti-theft system from engaging while vehicle car is off?
Answer #1G. T. Service Center (4234 Answers) , Stephenville, TX - (254) 638-3236ProfessorG April 13, 2014, 06:57Master
The anti theft is part of the programming in the computer; There is something, probably due to weather conditions, causing the alarm to go off. A door ajar sensor could be faulty and showing open when it's not open. The only way to be sure is to unhook the battery until some diagnostics can be done. I have seen some under hood fuse boxes fail causing circuit issues, but without testing and duplicating the symptoms it would be hard to say what the cause is.
Replygtownjohn, April 13, 2014, 07:35Rookie
I have received a faulty "door ajar" message periodically.
ReplyProfessorG, April 13, 2014, 08:57Master
That could be the issue.