[Kuliu]

I bought a 2012 Speed 3 not too long ago and my fog lights dont work.
I've checked the 15A fog fuse and bought new bulbs but they're still not working.
Any tips on where to look for next? I know there is a relay near the passenger fog light assembly but I haven't been able to test it yet.

Any idea what else it could possibly be?

 

[CouchSloth]

Try this web page. It has a wiring diagram. Shows there is a relay which could be worth checking. Maybe its missing? Have you checked for power as the lamp connectors?

 

[Kuliu]

Try this web page. It has a wiring diagram. Shows there is a relay which could be worth checking. Maybe its missing? Have you checked for power as the lamp connectors?

I have checked the relay its there, but I don't currently have a way of testing it so thats gonna be my next step.

 

[Kuliu]

I ended up finding another post online and I ended up switching out the taillight relay that is located in the fuse box (which I know works) with the fog light relay under the bumper.
After doing this I can confirm that the relay is not the issue.

Anyone have any idea where I should look next?

 

[CouchSloth]

Not sure if you have checked, but when you turn on the fog lights, does the fog light relay click? If it does not click this would indicate the relay is not energising, and thus power would not be routed to the fog lamps. I note the control for the fog relay comes from two locations. One is from the TNS relay, which I think is the turn signal relay. This means there is another relay providing power the the fog relay. The other control is from the fog lamp switch which simply provides a ground. The quickest way to determine if you have a control or power issue would be to do the following.

If you have the same wiring as the wiring diagram I linked to previously, you could simply link the grey wire from the 15 amp fuse to the light green wire, thus bypassing the relay. Take care doing so. It could be helpful to use a new 15 amp fuse, and solder a couple of wires to the fuses connection tabs. Then plug the wires into where the relay would plug into.

If you had a multi-meter you could also simply check for voltage at the relay contact. Where the grey wire terminates you should have permanent 12 volts (battery +)

 

[Marco_Chile]

Not sure if you have checked, but when you turn on the fog lights, does the fog light relay click? If it does not click this would indicate the relay is not energising, and thus power would not be routed to the fog lamps. I note the control for the fog relay comes from two locations. One is from the TNS relay, which I think is the turn signal relay. This means there is another relay providing power the the fog relay. The other control is from the fog lamp switch which simply provides a ground. The quickest way to determine if you have a control or power issue would be to do the following.

If you have the same wiring as the wiring diagram I linked to previously, you could simply link the grey wire from the 15 amp fuse to the light green wire, thus bypassing the relay. Take care doing so. It could be helpful to use a new 15 amp fuse, and solder a couple of wires to the fuses connection tabs. Then plug the wires into where the relay would plug into.

If you had a multi-meter you could also simply check for voltage at the relay contact. Where the grey wire terminates you should have permanent 12 volts (battery +)

Hi friend.
I came here looking for the solution to the same problem, I hope I can solve it with your help.