Horn honks when starting
 

For the past few days my 07 H3 honks the horn when turning the ignition key to start it. Any ideas what can be causing this and how to make it stop? Thanks for the help.

Bump to the top. This problem is driving me crazy.

That is a strange one, for sure
Obviously the horn works and the vehicle starts
Any codes pop up in DIC ?
Try touching battery cables together for ten seconds for a system reset.

did you unlock it with the key or did you use your keychain unlock buttons ? does it keep honking after the ignition is on for a minute or immediatly stop honking?

Sounds like your BCM may have a "hicc-up".

I use the wireless key fob to unlock the doors. Everything seems fine then I turn the ignition to start it and it honks real quick. Maybe half a second. Every time I start it. Runs normal. Just drives me crazy.