Join Date: Jan 2010
Location: Fountain Valley California
If your trying to confuse me, you were successful. If you left for work at 0300 hrs, it still had to be dark outside you would think. That condition would have automatically forced the car to turn on all the exterior lights, (as long as the lights switch was in the *auto* mode). The only way to cancel the headlights would be to select the parking lights position, or cycle the switch into an out of the *off* position once (stealth mode), which would shutdown all of the exterior lights as well as the I/P cluster background lights along with it.
The DRL F21-15A fuse not only powers up the DRL relay , but also is the power source that illuminates the headlights in the (somewhat dimmer) daytime running lights condition. Now if you had a car (that had originally been optioned for Canada), the car would have been wired to keep the DRL lights on full time (in daylight), vs having the ability to select which way you might want them to be. If you actually pulled the correct fuse, those lights had to shutdown. If you accidentally pulled the wrong fuse an removing the DRL relay shutdown the lights, that would indicate that the relay was stuck in the energized position.
For me to understand correctly as to whats happening here, you need to do some various light switching combinations, an post the results (like what stays on, what turns off in daylight conditions as well as night time condition etc).