bosch's993

Hey guys! I was hoping you guys could help me out. When I press the horn on my steering wheel, nothing happens. But I know the horn works, because when you lock the car with the key FOB, while the drivers door is open, it makes a short honking noise? I checked all the fuses, and every single one is good, so its not that? Any ideas?

ca993twin

What? 993s have horns?

It seems you've diagnosed the problem pretty well... likely isolated to the horn switch itself, most likely the wire came off.

bosch's993

The wire came off?
Of where? The back of the airbag unit on the steering wheel I assume, I've never taken the wheel off, but the PO might have. Do I need to unplug the battery for a bit before I take off the airbag?

CalvinC4S

I think the alarm has it's own horn next to the PS rack.

ca993twin

If this is correct, then the more likely candidate would be a broken wire or loose connector at the horn itself.

CalvinC4S

I would agree if it where just a high or low tone, but im still feeling the switch on the wheel.

jscott82

Going out on a limb here... How long have you owned the car? I'd bet the PO removed the fuse and/or relay.... I know you checked, but check again.

Common problem with these cars is the grommets that attach the airbag wear out and the horn tends to go off at weird times (like when braking)... I’m putting my money on “PO got sick of it and pulled the fuse”….

bosch's993

Any idea where the regular horn is? I assume its up front, and recall something about the wheelwell, but can't remember specifically?



My dad had it for about 10 years before he gave it to me, and he doesn't recall ever trying to use the horn. He said he didn't pull the fuse, but ill check the fuse again.

jscott82

My bet isnt looking too good... but im sticking with it :-)

Horns are in front passenger fender just forward and above the tire. Remove the fender liner to get to it.

NC TRACKRAT

What jscott82 said. I believe the alarm horn is hidden way up underneath near the driver's side of the transmission housing.

bosch's993

The alarm horn I'm describe in isn't like the alarm going off, more like a honk, I'm gonna try taking the airbag off and see if they messed around in there before I try the actual horn.

NC TRACKRAT

Be sure to disconnect the battery and let it sit for a few minutes before removing the airbag.

bosch's993

Hey guys the relay for the horn (R23) has a black wire running out of otitis goes underneath the fuse box? I am assuming this is not normal, and probably why my horn doesn't work, any ideas where it could lead to?

CalvinC4S

pull the relay out and borrow one from another area, see if your horn works.

The black wire is something add on, maybe radar or lojack

bosch's993

With another relay, the horn will not stop honking as soon as you twist the key into accessory, so I'm pretty sure its the horn contacts, any part numbers for the parts needed for that?