I have a 2001 Ford Focus and recently I've noticed that sometimes the horn just stops working. The first time I noticed it was a few months ago, I pulled the fuse, put it back in and the horn worked again.
Yesterday I noticed it wasn't working, but the fuse trick didn't help. The horn itself works since it sounds if I use the remote to lock the doors, but it wouldn't trigger when pressing the steering wheel. It was still not working after parking my car in the garage and turning off the car so I called the dealer and made an appointment.
This morning the horn was working again. The dealer said they can't diagnose the problem unless I can bring it to them when it's not working.
I have no idea how often it stops working since I really only notice the problem when I need it, like I did yesterday.
Hi , if like a similar problem i had years ago , the problem is either a bad connection on the steering wheel or an earth fault on the horn its self ? the car i had the fault on was a mk1 golf and under the steering wheel was a copper strip round the neck of the wheel where its connected to steering rod.....the connection (similar to a motor armature brush) was not making a good connection, i cleaned them with wire wool and hey presto. hope this helps??
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If your horn is not working, check the horn relay before anything else. Press the horn actuator on the steering wheel, and have someone listing within the engine compartment for a distinct 'clicking.' If you hear it, then it's working and the horn component itself may be malfunctioning. The horn looks like a square-mouthed snail shell and should be just behind the front bumper skirt on the driver's side. More or less beside the fog light assembly.
You have activated the passive antitheft system connect the battery then lock and unlock the drivers door several times and try to start the vehicle make sure all doors and windows are up and locked and trunk closed before you connect the battery
typical UK reg motor they corrode like ?-?-? ,i suspect that your horn has stuck up with corrosion and the indicators is the hazard light warning switch faulty .But i could be wrong and often am but check it out anyway.I try not to repair UK or northern europeon vehicles anymore as i spend more time cutting off rusty bolts and seized bits than whats the cars worth compared to spanish vehicles that can be 20 yrs old and i just whistle and the bits come undone
Actually you use the horn relay a lot! At least 3 times every time you get lock/unlock your car (6 toots, 2 toots for lock and 1 for unlock right?) ... You just said: "as i clicked my car to lock. It got weaker and weaker until it stopped working" Buy a different brand relay (preferably one not made in China, pay more) and don't expect they WILL last a long time the horns take a lot of power and they have a very dirty feedback to the relay un-like lights. You can dis-able the toots by reading your owners manual.
Sounds like you may have corroded terminals on the horn itself.
Find the horn in the engine compartment - remove the wire connected to it - clean the spade terminal with some sand paper and push the terminal back on. If that doesn't work you may need to remove the horn from the car and clean up the earth connection, i.e. where the horn is attached to the body work of the car to get a good electrical contact.