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How To Fix An 850’s volvo Horn

The contacts normally sit just below a piece of metal on the back side of the airbag, so when you push on the horn it touches at least one of those contacts and blasts the horn…

volvo horn

BROKEN Volvo HORN FIX

Read what Forum Member Terry Haywood has to say about his experience in dealing with his broken volvo horn.

Its very important to disconnect the battery first. Otherwise the airbag light goes on and you need the dealer to turn it off for a nice $85 fee. It should be the last thing to be plugged back in also. — Jeff

This is from memory: There are I think 4 horn contacts inside the steering wheel. They go thru a metal frame and are held in place and insulated by red plastic around each contact. The contacts normally sit just below a piece of metal on the back side of the airbag, so when you push on the volvo horn it touches at least one of those contacts and blasts the volvo horn. This makes more sense when you see it.

In my car the plastic that holds one of the contacts in place broke and allowed the metal contact to move just enough to touch the metal frame, making a permanent circuit. Apparently this is not exactly your problem, I guess in yours the contacts completely fell out or otherwise are not where they need to be to complete the circuit. Anyway, in my car because the plastic insulator had not completely disintegrated I was able to epoxy the thing back in place. That was only last December – it still works, but I don’t blow the volvo horn very much.

Since you get a pathetic millisecond honk I bet at least one of your contacts is in good enough shape to glue back in. If on the other hand the plastic insulation is gone you have to decide how much fabricating you want to do to fix it.

If you want to take a stab at it here are the details (again from memory)
– disconnect the battery
– turn the wheel all the way to one side. There is a hole on the back of the wheel, inside there is a t-30 torx screw. Remove that.
– turn all the way to the other side. Remove torx screw.
– airbag is now loose. Unhook electrical connector and put airbag in a safe place. (I put mine on the kitchen counter while I worked. When I went back inside my 16 year old son was juggling the airbag. Really.)
– look for broken red plastic parts. I think they are on the back side of the frame, kind of hard to see.

If you do try to fix it I would test the connections with an ohmmeter before reassembling. If fact, before I started the job I poked around for a while with an ohmmeter figuring out how the whole thing works. Maybe it’ll be obvious to you.

Standard disclaimer about airbags and such – you have to remove the airbag to do this job, it’s up to you to decide whether you want to mess with that. I am not an expert at this stuff. The contributors who know more than I do say you shouldn’t put an ohmmeter across the airbag contacts. And finally my own tidbit – don’t let your torx bit roll down the steering column, you’ll never find it.

And remember to have your radio code handy when you reattach the battery or you’re in for a trip to the dealer..

How To Fix An 850’s Horn (on wheel)

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