Key in ignition horn doesn't work, key out of ignition worn works.

[Steelepuls]

My car did the same thing with the horn, there is a ground on the steering wheel under the airbag that was broken, the sheathing was intact but the wire underneath was broken. Undo the battery, wait a while and remove the airbag. There is a female ground connector on the steering wheel, check if it is still intact. I reconnected the ground with a new connector. Works fine now.

[KRAM36]

Originally Posted by Steelepuls

My car did the same thing with the horn, there is a ground on the steering wheel under the airbag that was broken, the sheathing was intact but the wire underneath was broken. Undo the battery, wait a while and remove the airbag. There is a female ground connector on the steering wheel, check if it is still intact. I reconnected the ground with a new connector. Works fine now.

Looks like I'll be pulling the steering wheel. Thanks for the info.

Did you have to pull the clock spring?

[Steelepuls]

No need to pull the whole steering wheel off, just remove the two torx screws holding the airbag on the back side of the steering wheel, carefully lift the airbag off. It’s a little hard to hold the airbag and replace the connector at the same time, the airbag fell off and got unplugged when I was doing it. Luckily I followed the instructions on undoing the battery before doing this repair. Or else the reset by the dealer would be needed. It was much easier to fix the connector without having to hold the airbag. Took 5 minutes to replace the connector and replace the airbag.

[Gelbster]

There are some photos of that specific issue IIRC. It is a Flag connector and a Brown wire.The wire breaks internally(insulation looks good) near the Flag connector.
My recollection is that to access this you need to remove the 2 'secret' screws behind the Steering wheel to remove the Airbag. Those screws are Torx. If they just rotate endlessly without loosening the Airbag - we both have the same problem ! I have no solution for removing the Airbag.Hopefully others will be able to suggest something.
There is a Youtube for the 'broken wire' job.

Originally Posted by Steelepuls

My car did the same thing with the horn, there is a ground on the steering wheel under the airbag that was broken, the sheathing was intact but the wire underneath was broken. Undo the battery, wait a while and remove the airbag. There is a female ground connector on the steering wheel, check if it is still intact. I reconnected the ground with a new connector. Works fine now.