2010 Buick Lacrosse Horn Relay - Does anyone know where the horn relay is on the 2010 Lacrosse?

[Notyourdads]

Or is it grounded to frame? The horn was stuck on - had to pull fuse to shut it off. No horn relay listed in manual - although trouble shooting online indicates there is???

 

[2007LucerneCXL]

Here's the wiring diagram and the relay is shown under the hood fuse box.

 

[only4al]

Or is it grounded to frame? The horn was stuck on - had to pull fuse to shut it off. No horn relay listed in manual - although trouble shooting online indicates there is???

Hi. I have the same issue with my 2010 lacrosse. Did you find out where the horn relay is located? It is not listed in the fuse box under the hood nor the one inside.

 

[2007LucerneCXL]

See post #2

 

[only4al]

Thank you

 

[G-56331]

Hi. I have the same issue with my 2010 lacrosse. Did you find out where the horn relay is located? It is not listed in the fuse box under the hood nor the one inside.

Yes its under the fuse panel box! On driver's side panel

 

[only4al]

Hi and thank you very much for the reply. I still cannot locate it.
Is it the fuse panel inside the cabin by the driver's side or the fuse panel under the hood?

 

[Bill Still]

Hi. I have the same issue with my 2010 lacrosse. Did you find out where the horn relay is located? It is not listed in the fuse box under the hood nor the one inside.

Had a problem with my horn,remote ect. I was told the relay is built into the fuse buss and the entire buss has to be replaced if it goes bad.
Thought it sounded unusual but came from a certified GM Dealer I trust

 

[G-11780]

the relay is built into the fuse box

 

[benneri]

My 2010 Buick Lacrosse also has a malfunctioning horn, i can hear a click from near the engine fuse/relay box, the 15 amp fuse is good, I saw the diagram above showing the horn relay. Based on that schematic I lifted up the lower portion of the fuse box a couple inches by loosening 3 bolts and 6 clips on side but could see no relay under neath or in the ends of the harnesses going into to bottom of box. I realize that schematics don't typically give physical locations but it does show a dotted boundary indicating the relay is in the underhood fuse box. I believe the diagram is for the right model since it has the fuse as number 51, like my 2010 lacrosse. Even if the relay is in a "bus harness" as stated above it is still replaceable. Most auto parts stores sell the standard 4 prong GM relay and list it as 2010 buick lacrosse horn relay. Where is it???

 

[CHITOCANO6]

Hola. Tengo el mismo problema con mi lacrosse cxs 2010. ¿Alguien averiguó dónde se encuentra el relé de la bocina? necesito ayuda por favor

 

[CHITOCANO6]

Hi. I have the same issue with my 2010 lacrosse CXS. somebody find out where the horn relay is located? I need help please

 

[CHITOCANO6]

Or is it grounded to frame? The horn was stuck on - had to pull fuse to shut it off. No horn relay listed in manual - although trouble shooting online indicates there is???

Hi. I have the same issue with my 2010 lacrosse cxs. somebody find out where the horn relay is located? i need help please

 

[G-590750]

Hola. Tengo el mismo problema con mi lacrosse cxs 2010. ¿Alguien averiguó dónde se encuentra el relé de la bocina? necesito ayuda por favor

Esta interno en la caja de fusibles.No es posible reemplazarlo ya que es parte de la caja de fusibles del motor.

 

[2012crosse]

I'm having the same problem with my 2012. I dont think it is the relay because the horn sounds when I lock the doors from the remote. But I would like to check it anyway. There is an airbag in the steering wheel and I really am not experienced enough to mess with that. Any other ideas why the horn wont sound from the switch but it sounds from the security set? Car goes in for inspection tomorrow and I'm stumped.

 

[mcat1964]

Yes its under the fuse panel box! On driver's side panel

Having the same issue. Good fuse however, there is no relay under the fuse box on the driver side panel. Can someone post a pic?