Horn stopped working mid-press!

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My Name: DigitalEmotion76

Member
Posts: 2
Joined: Mon Oct 08, 2018 9:51 am
Model: C3 Picasso
Year: 2014 (14)
Engine Size: 1.6
Fuel Type: Diesel
Mileage: 27000
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)

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Hello,

The other day I was driving on the motorway when someone cut into my lane. I gave the horn a good blast then it suddenly stopped working. Whether just coincidence or not I heard something drop out on the motorway at the same time!

I have checked the fuse for it which is absolutely fine, but my question is, where is the horn relay box so I can check that next? Then where is the horn located? Is it under the bumper on the passenger side?

Any help, advice & pictures would be extremely useful.

Thanks in advice,

Paul.
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My Name: Arfur Dent

Guru
Posts: 3628
Joined: Sat Jul 23, 2011 3:47 pm
Model: C3 2002-2005, Original shape model
Year: 2002 (52)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 100000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: DV4 16-valve diesel (90 PS)
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DigitalEmotion76 wrote: ↑Mon Oct 08, 2018 9:57 am Hello,

The other day I was driving on the motorway when someone cut into my lane. I gave the horn a good blast then it suddenly stopped working. Whether just coincidence or not I heard something drop out on the motorway at the same time!

I have checked the fuse for it which is absolutely fine, but my question is, where is the horn relay box so I can check that next? Then where is the horn located? Is it under the bumper on the passenger side?

Any help, advice & pictures would be extremely useful.

Thanks in advice,

Paul.
The horn relay is a solid state device that is part of the BSI.

Yes, the horn should be behind the front bumper, well it is on most of the C3 models, so I see no difference to the C3 Picasso.
C3 Picasso Horn not working
C3 Picasso Horn not working
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My Name: scmjerram

Member
Posts: 2
Joined: Mon Sep 14, 2020 12:29 pm
Model: C3 Picasso
Year: 2010 (10)
Engine Size: 1.4
Fuel Type: Petrol
Mileage: 88000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
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I realise this is an old post, but... I assume you got it working again?

What was the problem?
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My Name: C3CAR

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Posts: 2849
Joined: Wed May 04, 2011 10:01 am
Model: C3 2002-2005, Original shape model
Year: 2002 (02)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 140000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: DV4 16-valve diesel (90 PS)
Has thanked: 234 times
Been thanked: 116 times

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I have seen the Citroen C3 horn just go bad, and replacing the horn unit fixed the fault.

The replacement Citroen part was AM80S/L Car Horn OE Fit - French Cars (amazon) for a direct fit part and cheaper than Citroen parts department.
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