my doors lock and unlock themselves, wipers turn on when car turns on, and my horn only works for the alarm, what sensor causes this? I checked for codes and it said there were no problems, what is it? Please help.

 

U have several issues. The doors locking them self U get when U try and unlock it when U uses the key right? the wipers have a ghost wipe replace the multi function switch
and the horn only works with the alarm U mean U cant press it and it goes off?? do u have an air bag light on?

 

the horn won't work when I press it, the air bag light is not on, my locks just randomly lock or unlock while driving, or right after closing the doors.

 

Possible clock spring for the horn issue. and the lood lock issue I would say the key pos switch on the driver side door is messed up.