Salinger Posted March 10, 2012 Share Posted March 10, 2012 My wife locked her 2009 IS250, and left the key fob in her purse in the trunk. Fortunately, she left a window open and was able to get in. When she opened the door the alarm went off, then shut off after a few minutes. Now her keyless entry system won't work. Is there a way to reset it? We can get in the car using the manual key, and can start the car my holding the key fob up to the start button twice, but is there a way to get it back to its normal state? Thanks. Quote Link to comment Share on other sites More sharing options...
Salinger Posted March 11, 2012 Author Share Posted March 11, 2012 Ok, I figured it out. Turns out that the battery to the key fob was dead. I guess when the car alarm goes off, it must do something to drain the key fob battery at the same time. I had thought of that, but it seemed so unlikely that I looked for a more complicated problem first. When I replaced the battery in the key fob, everything worked fine. Quote Link to comment Share on other sites More sharing options...
carlos3366 Posted March 11, 2012 Share Posted March 11, 2012 I'm glad things worked out. http://www.clublexus.com/forums/is-second-generation/623092-i-did-it-locked-my-keyfob-in-the-car.html Quote Link to comment Share on other sites More sharing options...
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