Intermittent horn issues - Citroen Xsara Picasso

[Issi]

Hi all,

I've got an 05 Xsara, and the horn buttons on the steering wheel are dodgy to say the least, some days they work and some days they won't.

I've ruled out fuse failure and just wondering if anyone has any ideas? I'm a bit scared to take the steering wheel apart as -

1. I'm not a mechanic
2. There's a big old airbag in there.

Any body got any tips/ideas?

[megamaniac]

Most likely comms unit.