Not sure how many people knew this, i just found this and had the car for a month know. When you start your car, and after the system check is odne, you can adjust all sorts of things your car does. I turned on the horn when the car locks and turned off the audio/speed adjuster for the radio. You can also adjust how long the courtsy lights stay, beebs, etc. just thought i'd post it incase anybody else didnt know about this.