ebatters

01 Cp M6 I had never tried the horn until I was cut off a few days ago. The #11 fuse is good - I replaced it anyway just to check. Where should I look next?
Thanks

ebatters

Thanks - I'll pull and replace the relay tomorrow - assuming I can get one at AutoZone - and go from there.

dadaroo

Here is the 2001 wiring schematic. If the relay does not fix it, let us know so we can do more diagnostics.

ebatters

The relay tested OK at Autozone so I put it back...horn did not work. I pulled into the garage tonight, tuned off lights, shut the engine off..tried the horn ...it worked ..twice..
I restarted the car...the horn did not work..nor did it after several cycles on moving, shutting down etc. Could it be the switch in the steering wheel?

ebatters

Thanks...the membrane looks like the answer....I wonder if there is a service that will take the assembly for rebuild...the write-up is pretty emphatic about not doing it as a novice....Almost everything I do on this car is my first time but this one is a bit concerning

dadaroo

I agree with 8VETTE7, if you can use the remote to have the BCM activate the horn with consistency, then the problem should be in the steering wheel/column. Most likely the switches.

Just make sure you disconnect the battery (the negative side will do) before you monkey around with the airbag.