Weird horn problem

[Hairsy16]

I pulled into a petrol station today. As I switched off the ignition, the horn came on constant. I turned the ignition back on and the horn stopped. I then switched it off immediately and it was fine.

I've driven the car a couple of times since then and it's been fine.

I don't believe in magic so something made it happen. I just can't imagine what there is in the ignition switch that would make this happen.

The horn is operating fine using the steering wheel buttons.

Any suggestions?

Many thanks

Dave

[AMG Merc]

This forum is getting very kinky methinks

[Adrian W]

Hmmm, getting the horn for no reason!

I would suggest some stuck relay contacts, when the ignition switch was turned off the back EMF had nowhere else to go to get to earth.

[Hairsy16]

Adrian W said:

Hmmm, getting the horn for no reason!

I would suggest some stuck relay contacts, when the ignition switch was turned off the back EMF had nowhere else to go to get to earth.

That sounds very logical - thank you Adrian. I'll investigate ...