Fog light help
Thread Starter
Safety Car
Joined: Apr 2002
Posts: 4,101
Likes: 3
From: Vandalay Industries
Fog light help
Fogs come on with the unlocking of the car via fob but not with the fog switch.
I checked the fuse for the fogs, it is good. Can I eliminate fuses/maxifuses/relays since the fogs actually work with the fob?
Also, I installed the CLB today so I looked at the switch connection for the fogs. All connections looked ok but that waws just a visual look.
Any suggestions? I suppose I need to test the relay/maxifuse somehow or make sure there is voltage getting to this switch?
Thanks.
I checked the fuse for the fogs, it is good. Can I eliminate fuses/maxifuses/relays since the fogs actually work with the fob?
Also, I installed the CLB today so I looked at the switch connection for the fogs. All connections looked ok but that waws just a visual look.
Any suggestions? I suppose I need to test the relay/maxifuse somehow or make sure there is voltage getting to this switch?
Thanks.
Racer
Joined: Jul 2004
Posts: 412
Likes: 0
From: Rockland County NY
Does the yellow led on the switch light up? Take a multimeter and check for DC voltage on the harness for the switch. You should get roughly 12VDC. The harnesses for the foglights are obviously getting power if they come on with the key fob, so my guess would be either the switch itself is bad (which would probably be the case if you're getting voltage at the switch harness) or a bad relay. Either way, it shouldn't be hard or expensive to fix. Good luck. I know this is a pain in the rear. I'm helping a friend restore an older M3 that had major electrical problems -- much easier to do with the interior gutted 
