OP, yes...see if either your turn signal (you know what that is, right?)...or fog lights...are off. Check your low and high beam headlights both.
Some light isn't working.
It could, you know, just be the bulb has burned out...but City is right that the turn signal can fail just because the lower tab in the socket has been pushed down too far to hold bulb firmly. Pull it up a little from the bottom--disconnect it first though before playing around with it.
Upcoming comedy shows: May 20, Greenwich Village Comedy Club. 6 p.m. See Facebook for other shows and PM me if you can make one...love to see you there!
A recent set: https://youtu.be/995gLmVEVZk
Mangofy your E46!